x64dbg MCP Server
The x64dbg MCP Server exposes x64dbg reverse-engineering and debugging capabilities to AI assistants, enabling automated binary analysis, debugging, and security triage of Windows PE executables.
Debugging Session Management
Load PE executables (auto-detecting 32/64-bit), attach to running processes, terminate sessions, query debugger status, list active sessions, and close the debugger process.
Execution Control
Resume execution, step into/over/out of functions, run to a specific address, and execute raw x64dbg command strings.
Breakpoints
Set software, hardware, or memory breakpoints with optional conditions and log text; remove or list breakpoints; collect values at breakpoint hits in a loop (
collect_bp_args).
Memory & Registers
Read/write debuggee memory, search for byte patterns or strings, get the full virtual memory map, read/set CPU registers, get the call stack, list/switch threads.
Code & Binary Analysis
Disassemble instructions, analyze function boundaries and call graphs, find cross-references, list recognized functions, get loaded modules, inspect imports/exports, find strings in memory, parse PE headers, and record execution traces.
Security Triage
Detect packing/obfuscation (entropy, EP location, packer signatures), cross-reference imports against a malware API database (injection, network, crypto, anti-debug, etc.), scan for anti-debugging techniques, check PE sections for anomalies (W+X, high entropy, etc.), and generate a consolidated security triage report.
Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@x64dbg MCP Serverload executable sample.exe and set breakpoint at main"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
x64dbg MCP Server
A production-level Model Context Protocol server that exposes x64dbg reverse-engineering and debugging capabilities to AI assistants over STDIO or Streamable HTTP.
It is designed for practical debugger automation, not just toy examples:
Auto-detects PE architecture and launches
x32dbgorx64dbgas neededSupports both
load_executableandattach_to_processExposes debugging, memory, analysis, and security triage tools through MCP
Uses a lightweight bridge plugin and talks to
x64bridge.dlldirectly viactypesDoes not depend on
x64dbgpy
Quick Start
Recommended path
npm install -g x64dbg-mcp
x64dbg-mcp setup
x64dbg-mcp doctorAfter that, choose one transport:
STDIO: let your MCP host launch
x64dbg-mcpdirectlyStreamable HTTP: start a long-running server with:
x64dbg-mcp --transport streamable-http --host localhost --port 3000The HTTP endpoint is fixed at http://localhost:3000/mcp.
stdio and streamable-http are the supported startup transports. The SDK still ships a standalone SSE server transport, but it is deprecated and this project does not expose it as a separate mode.
Related MCP server: Binary MCP Server
Requirements
Windows only, because x64dbg is Windows-only
Node.js 20+
Python 3.10+
CMake 3.15+ plus MSVC or MinGW only if you need to build the C loader from source
npm install downloads x64dbg automatically if it is not already available. The iced_x86 Python package is also installed automatically into detected Python environments; if that installation fails, the bridge falls back to x64dbg's own disassembly APIs.
Installation
Global npm install
npm install -g x64dbg-mcpThe global install path is the simplest one. Its postinstall step handles the usual setup work:
Step | What happens |
x64dbg | Downloads the latest snapshot if not found locally |
Plugin files | Deploys the loader and Python bridge files into the x64dbg plugins directories |
Bridge auth | Generates |
Python | Detects Python install paths and records |
| Installs it into detected Python environments if needed |
| Creates a config file with detected values and defaults |
Before continuing, review the configuration values in the next section if your x64dbg install path, Python install path, or HTTP port should differ from the detected defaults.
Then run:
x64dbg-mcp setup
x64dbg-mcp doctor
x64dbg-mcpIf you need to rebuild and redeploy the loader manually, use:
x64dbg-mcp install-pluginSource checkout
Use this path if you are developing on the project itself:
git clone https://github.com/ouonet/x64dbg-mcp.git
cd x64dbg-mcp
npm install
npm run buildThen review the configuration section below, especially if X64DBG_PATH, Python paths, or the default HTTP port need to change.
npm run setup
npm run install-plugin
npm run doctor
npm startTo run HTTP mode from a source checkout:
node .\dist\server.js --transport streamable-http --host localhost --port 3000If you want the x64dbg-mcp command in a source checkout too, run npm link after npm run build.
If x64dbg already exists in a non-default location, set X64DBG_PATH in .env before npm run install-plugin.
Manual plugin installation
Most users should not need this. Use it only if you want to build and copy the loader manually instead of running install-plugin.
cd plugin\loader
# 64-bit
cmake -B build64 -A x64
cmake --build build64 --config Release
$p64 = "C:\x64dbg\release\x64\plugins"
Copy-Item build64\Release\x64dbg_mcp_loader.dp64 $p64
Copy-Item ..\x64dbg_mcp_bridge.py $p64
Copy-Item ..\x64dbg_bridge_sdk.py $p64
# 32-bit
cmake -B build32 -A Win32 -DBUILD_32BIT=ON
cmake --build build32 --config Release
$p32 = "C:\x64dbg\release\x32\plugins"
Copy-Item build32\Release\x64dbg_mcp_loader.dp32 $p32
Copy-Item ..\x64dbg_mcp_bridge.py $p32
Copy-Item ..\x64dbg_bridge_sdk.py $p32npm run install-plugin performs the same work for both architectures by default. Pass -No32 if you want to skip the 32-bit build.
Configuration
npm install creates .env automatically. Edit that file directly, or run setup again if you want the interactive flow.
# x64dbg path (auto-detected)
X64DBG_PATH=C:\x64dbg
# Python install directories used by the C loader
PYTHON_HOME_X64=C:\Python314
PYTHON_HOME_X86=C:\Python312-32
# Bridge
BRIDGE_HOST=127.0.0.1
BRIDGE_PORT=27042
BRIDGE_AUTH_TOKEN=<auto-generated>
# MCP transport defaults
MCP_TRANSPORT=stdio
MCP_HTTP_HOST=127.0.0.1
MCP_HTTP_PORT=3000
# Logging / limits
LOG_LEVEL=info
MAX_SESSIONS=1
SESSION_TIMEOUT_MS=3600000Variable | Default | Description |
| auto-detected | x64dbg installation directory |
| auto-detected | Preferred Python 64-bit install directory |
| auto-detected | Preferred Python 32-bit install directory |
|
| TCP host for the local bridge |
|
| TCP port for the local bridge |
| auto-generated | Shared secret for MCP to bridge requests |
|
| Default startup transport: |
|
| Default HTTP bind host |
|
| Default HTTP listen port |
|
|
|
|
| Active session limit for the current bridge architecture |
|
| Idle session timeout in milliseconds |
If you manually start x64dbg outside the MCP flow, keep the deployed x64dbg_mcp_bridge.token file in the plugins directory so the bridge enforces the same token as the MCP server.
Use With Your MCP Host
Note: You do not need to pre-launch x64dbg manually. The MCP server auto-launches the correct debugger when you call
load_executableorattach_to_process.
STDIO host configuration
Use STDIO when your MCP host can spawn a local process.
Claude Desktop
If you installed the package globally:
{
"mcpServers": {
"x64dbg-mcp": {
"command": "x64dbg-mcp"
}
}
}If you are using a source checkout instead:
{
"mcpServers": {
"x64dbg-mcp": {
"command": "node",
"args": ["C:\\path\\to\\x64dbg-mcp\\dist\\server.js"]
}
}
}Windsurf / Cascade
{
"mcpServers": {
"x64dbg-mcp": {
"command": "node",
"args": ["C:\\path\\to\\x64dbg-mcp\\dist\\server.js"],
"env": { "BRIDGE_PORT": "27042" }
}
}
}Streamable HTTP
Use Streamable HTTP when you want to start x64dbg-mcp once and let an AI tool connect to it through a fixed local URL.
Start the server first.
If you installed the package globally:
x64dbg-mcp --transport streamable-http --host localhost --port 3000If you are running from a source checkout:
node .\dist\server.js --transport streamable-http --host localhost --port 3000Then connect your AI tool to this MCP endpoint:
http://localhost:3000/mcpBelow are direct configuration examples for common AI tools.
Claude Code
Create a .mcp.json file in the project root:
{
"mcpServers": {
"x64dbg-mcp": {
"type": "http",
"url": "http://localhost:3000/mcp"
}
}
}Or add the same server to Claude Code with its CLI:
claude mcp add --transport http x64dbg-mcp http://localhost:3000/mcpWindsurf / Cascade
Edit ~/.codeium/windsurf/mcp_config.json:
{
"mcpServers": {
"x64dbg-mcp": {
"serverUrl": "http://localhost:3000/mcp"
}
}
}If you already have other MCP servers configured in that file, just add the x64dbg-mcp entry under mcpServers.
If your AI tool does not support remote HTTP MCP servers and only knows how to launch a local command, use the STDIO setup above instead.
CLI flags override MCP_TRANSPORT, MCP_HTTP_HOST, and MCP_HTTP_PORT from the environment. The legacy MCP_TRANSPORT=http alias is still accepted for compatibility.
Typical Prompts
These are good examples of the kinds of requests the MCP server is built to support:
"Load
C:\samples\target.exeand analyze it for suspicious behavior""Attach to PID 1234 and inspect the current thread"
"Find the license check function"
"Generate a first-pass malware triage report"
Typical tool flows behind those prompts look like this:
Goal | Typical tools |
Load and debug a binary |
|
Attach to a live process |
|
Malware triage |
|
Reverse engineering |
|
Capabilities
The server exposes 38 tools across four practical groups.
Group | Scope |
Core debugging | load or attach, control execution, manage breakpoints, inspect session state |
Memory and registers | read and write memory, inspect registers, switch threads, walk call stacks |
Analysis | disassembly, function analysis, cross references, modules, imports, exports, strings, traces |
Security triage | packing checks, suspicious APIs, anti-debug detection, section anomalies, consolidated reports |
Representative tools include load_executable, attach_to_process, get_status, read_memory, disassemble, analyze_function, and generate_security_report.
Architecture
┌─────────────────┐ STDIO / HTTP ┌──────────────────┐ TCP (JSON) ┌──────────────┐
│ AI Assistant │ ◄───────────────► │ MCP Server │ ◄──────────► │ x64dbg │
│ (Claude, etc.) │ │ (Node.js / TS) │ port 27042 │ + Bridge │
└─────────────────┘ └──────────────────┘ │ Plugin │
└──────────────┘At a high level, the MCP server in src/ speaks STDIO or Streamable HTTP to an AI client, then forwards requests over a local TCP bridge to the plugin running inside x64dbg. The plugin side is a lightweight C loader plus Python bridge that translates those requests into x64dbg Bridge SDK calls.
Development And Testing
Development commands:
npm run ci
npm run ci -- --no-loader
npm run dev
npm run sync-plugin
npm run setup-x64dbg
npm run setup-x64dbg -- --force
npm run build
npm run lint
npm run cleanTesting commands:
npm test
python plugin/tests/test_bridge.py
npm run test:e2e
npm run test:http-smoke
npm run doctornpm run dev automatically syncs Python files into the bundled x64dbg checkout before starting the server.
npm run inspector launches MCP Inspector. On first run it downloads @modelcontextprotocol/inspector via npx, so restricted environments may need HTTP_PROXY / HTTPS_PROXY or a global install.
Reusable verifier scripts live under test/e2e/. They require an explicit target:
TARGET_EXE=C:\path\to\sample.exefor load-based verificationTARGET_PID=1234orTARGET_PROCESS_NAME=notepadfor attach-based verification
Examples:
$env:TARGET_EXE = "C:\Windows\System32\notepad.exe"
node test/e2e/verify_breakpoint_chain.mjs
$env:TARGET_PROCESS_NAME = "notepad"
node test/e2e/verify_attach_chain.mjsCI in .github/workflows/ci.yml runs TypeScript, Python, and loader-build jobs on every push. On tagged releases (v*), it also publishes the npm package with the prebuilt loader binaries included.
Project Structure
x64dbg-mcp/
├── src/
│ ├── server.ts # Entry point and transport bootstrap
│ ├── cli.ts # CLI parsing for transport/host/port
│ ├── httpServer.ts # Streamable HTTP server and MCP session handling
│ ├── mcpServer.ts # Shared MCP server factory and tool registration
│ ├── bridge.ts # TCP client for the x64dbg bridge
│ ├── launcher.ts # PE detection and debugger startup
│ ├── session.ts # Session lifecycle and garbage collection
│ ├── config.ts # Env-backed configuration loading
│ ├── errors.ts # Shared error helpers
│ ├── logger.ts # Winston logger
│ ├── types.ts # Shared TypeScript types
│ └── tools/
│ ├── debug.ts
│ ├── memory.ts
│ ├── analysis.ts
│ ├── security.ts
│ └── index.ts
├── plugin/
│ ├── x64dbg_mcp_bridge.py # Python bridge running inside x64dbg
│ ├── x64dbg_bridge_sdk.py # ctypes wrapper for x64bridge.dll
│ ├── loader/
│ │ ├── x64dbg_mcp_loader.c
│ │ ├── CMakeLists.txt
│ │ └── prebuilt/
│ ├── tests/
│ │ └── test_bridge.py
│ └── README.md
├── scripts/
│ ├── setup.mjs
│ ├── doctor.mjs
│ ├── install-plugin.mjs
│ ├── install-plugin.ps1
│ ├── postinstall.mjs
│ ├── prepack.mjs
│ ├── setup-x64dbg.mjs
│ ├── sync-plugin.mjs
│ ├── ci.mjs
│ └── manual/
├── test/
│ ├── basic.test.ts
│ └── e2e/
├── x64dbg/ # Bundled x64dbg snapshot used in development/tests
├── package.json
├── .env.example
└── README.mdLicense
MIT
Community
Contribution guide: see CONTRIBUTING.md
Security policy: see SECURITY.md
Code of conduct: see CODE_OF_CONDUCT.md
Bug reports and feature requests: use the GitHub templates under
.github/ISSUE_TEMPLATE/
For non-sensitive questions or usage issues, open a GitHub issue. For vulnerabilities, follow the private reporting process in SECURITY.md instead of opening a public issue.
Available Tools
39 toolsanalyze_functionA
Analyse the function that contains the given address. Returns boundaries, size, call graph (callers + callees), and whether the function is a leaf.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| address | Yes | Any address inside the function, or its symbol name |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description carries full burden. It describes outputs but does not mention side effects, permissions, or that it is read-only. Adequate but lacks explicit behavioral disclosure.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Single sentence that front-loads the action and quickly lists return values. No unnecessary words.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no output schema, the description adequately explains return values. It could specify the format of the call graph, but overall it covers the tool's functionality well.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% with descriptions, and the description adds value by explaining that the address parameter can be 'any address inside the function, or its symbol name', which goes beyond the schema's generic description.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it analyzes a function given an address and lists specific return values (boundaries, size, call graph, leaf status). It distinguishes itself from siblings like list_functions and disassemble by focusing on function-level analysis.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Implies usage when a function address is known and analysis is needed, but does not explicitly state when not to use or mention alternative tools. However, the context of sibling tools provides enough differentiation.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
analyze_suspicious_apisA
Cross-reference the executable's import table against a database of Windows APIs commonly used by malware, grouped by category (process injection, network, crypto, anti-debug, etc.). Returns per-category findings and an overall risk level.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| module | No | Module name (default: main executable) | |
| includeAll | No | Include all imports, not just suspicious ones |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description must disclose behavioral traits. It describes the analysis process but omits whether the tool modifies state, requires special permissions, or has side effects. Adequate but not detailed.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two concise sentences front-loading the action and outcome, with no redundant information.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no output schema, description covers return values (per-category findings, risk level). Parameters are simple and schema provides details. Sufficient for context.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema covers all parameters with descriptions. The tool description adds context about the malware database but does not enhance parameter understanding beyond schema. Baseline 3 per rubric for high schema coverage.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Description clearly states the tool cross-references imports against a malware API database, grouped by category, and returns risk level. This distinguishes it from siblings like get_imports (list only) and detect_anti_debug (specific category).
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Description implies usage for security analysis but does not explicitly guide when to use this tool versus alternatives like get_imports or analyze_function. No exclusions or prerequisites mentioned.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
check_section_anomaliesA
Check PE sections for anomalies that may indicate packing, code injection, or tampering: writable+executable sections, unusual names, zero raw-size with non-zero virtual-size, high entropy.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| module | No | Module name (default: main executable) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. It adequately describes the types of anomalies checked, but lacks details on whether the tool modifies state, requires specific permissions, or any side effects. It does not contradict annotations (none exist).
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single sentence that efficiently conveys purpose and specifics. It is front-loaded and each part earns its place. Slightly more structured formatting could improve readability but is not necessary.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a tool with 2 parameters, no output schema, and no annotations, the description covers the core functionality. However, it lacks information about the output format or what the module parameter defaults to, and could benefit from brief examples or return type hints.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100% (both sessionId and module are described in the schema). The description does not add meaning beyond the schema, so a baseline score of 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool checks PE sections for anomalies (packing, injection, tampering) and lists specific indicators: writable+executable, unusual names, zero raw-size with non-zero virtual-size, high entropy. This distinguishes it from sibling tools like detect_packing or analyze_suspicious_apis, which cover overlapping but distinct analysis areas.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage for PE file analysis but does not explicitly state when to use this tool vs alternatives like detect_packing or analyze_suspicious_apis. No guidance on prerequisites or when not to use is provided.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
close_debuggerA
Kill the x64dbg or x32dbg process. Works even if the bridge is not connected. Use this to cleanly shut down the debugger before deploying updated plugins or when you need to restart the debugger.
| Name | Required | Description | Default |
|---|---|---|---|
| force | No | Force-kill via taskkill even if the process was not launched by this MCP server (default false) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Despite no annotations, the description discloses key behavior: kills process, works without bridge connection. It is transparent about the destructive nature (killing process).
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two sentences succinctly convey purpose, usage, and behavior. No unnecessary words; every sentence is valuable.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple tool with one optional parameter and no output schema, the description covers all needed context: purpose, usage scenarios, and behavior edge cases.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema has 100% coverage with parameter descriptions. The description adds no additional parameter explanation, so baseline score of 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description explicitly states the tool kills x64dbg or x32dbg processes, with a specific verb and resource. It clearly distinguishes from sibling tools focused on analysis, breakpoints, and execution.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides clear when-to-use context: clean shutdown before deploying plugins or restarting. It mentions it works even when bridge is disconnected. No explicit when-not, but it's implied.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
collect_bp_argsA
Continue execution in a loop, collecting a memory expression at each breakpoint hit. Use this to trace repeated calls (e.g. AddMoudle, GetClassObject). The default expr 'ptr_utf16@[esp+4]' reads a wchar_t* arg from the x86 stack.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| expr | No | Expression to read at each hit: 'ptr_utf16@[esp+4]' (default), 'utf16@<addr>', or any numeric x64dbg expr | |
| maxHits | No | Stop after this many hits (default 200) | |
| timeoutSec | No | Per-hit timeout in seconds (default 10) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Explains the looping behavior and default expression. No annotations provided, so description carries full burden; adequately describes the main behavior without destructive implications.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two sentences, front-loaded with purpose, no wasted words. Example included efficiently.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Adequate for a tool with 4 parameters and no output schema; covers essential behavior but does not specify return format or collection result details.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, but description adds value by clarifying default expr and usage context (e.g., 'ptr_utf16@[esp+4]' for x86 stack).
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Describes the tool as continuing execution in a loop and collecting a memory expression at each breakpoint hit, with a specific use case example. Clearly distinguishes from siblings like trace_execution.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides explicit use case ('trace repeated calls') and a concrete example, but does not mention when not to use or alternative tools.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
continue_executionA
Resume execution of a paused debuggee. Runs until the next breakpoint, exception, or program exit. REQUIRES: session state must be 'paused' (check with get_status). Returns stopReason ('breakpoint', 'paused', or 'exited') and the address where execution stopped. If stopReason is 'exited', the process has terminated.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID from load_executable |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, description fully covers behavior: runs until next breakpoint/exception/exit, returns stopReason and address, and notes termination case. No missing behavioral details.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Three efficient sentences, front-loaded with action, no redundant words. Every sentence adds essential information.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given single parameter and no output schema, description covers prerequisites, execution behavior, return values, and edge case (exited). Complete for a simple continue tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema already provides parameter description; the description adds 'from load_executable', clarifying the source, which adds value beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Clear verb 'resume execution' with specific resource 'paused debuggee'. Differentiates from siblings like step_into/step_over by describing behavior until breakpoint/exception/exit.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly states prerequisite 'session must be paused' and suggests checking with get_status. Does not list alternatives but the context is clear.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
detect_anti_debugB
Scan the loaded executable for common anti-debugging techniques: API checks (IsDebuggerPresent, NtQueryInformationProcess), timing checks, PEB flags, int 2d / int 3, TLS callbacks, etc.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| module | No | Module name (default: main executable) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description carries full burden. Lists techniques scanned but does not disclose side effects, read-only nature, output format, or required privileges.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Single sentence efficiently conveys purpose and examples, though it could be slightly more structured by separating techniques into a list.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
No output schema provided, and description omits what the tool returns (e.g., list of detected techniques or boolean). Incomplete for an agent to know expected output.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%. Description adds no additional meaning beyond what schema already provides for sessionId and module.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Description clearly states the tool scans for anti-debugging techniques and lists specific examples, but does not explicitly differentiate from sibling tools like check_section_anomalies or detect_packing.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Implies usage for detecting anti-debug techniques in a loaded executable, but lacks explicit guidance on when to use versus alternatives or any exclusions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
detect_packingA
Analyse the loaded executable for signs of packing or obfuscation. Checks section entropy, section name anomalies, import table size, entry-point location, and known packer signatures. Returns a confidence score and list of indicators.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| module | No | Module name (default: main executable) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries full burden. It discloses checks and return type but does not state whether the operation is read-only, destructive, or requires specific permissions. The tool is likely read-only, but this is not explicit.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is succinct—two sentences that convey core functionality, checks, and output. No unnecessary words or repetition. Well-structured for quick comprehension.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a 2-parameter tool with no output schema, the description covers what the tool does and what it returns. However, it lacks details on the structure of the 'list of indicators' and does not mention potential limitations or reliability factors. More specific output description would improve completeness.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Input schema covers both parameters with descriptions. The description adds useful context beyond the schema: it clarifies that the 'module' parameter defaults to the main executable if omitted. This helps the agent understand default behavior.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool analyzes for packing/obfuscation, lists specific checks (entropy, section anomalies, etc.), and describes output (confidence score and indicators). It distinguishes from sibling tools like 'check_section_anomalies' by being a broader analysis.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies it's for initial packing detection, but does not explicitly state when to use it versus alternatives like 'analyze_suspicious_apis' or 'check_section_anomalies'. No 'when-not' guidance is provided.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
disassembleA
Disassemble instructions starting at a given address in the loaded module. Returns address, raw bytes, mnemonic, operands, and metadata (is_call, is_jump, reference target) for each instruction. Safe to call while paused. Address may be a hex value ('0x401000') or a symbol name ('main', 'kernel32.CreateFileW'). Tip: after load_executable with breakOnEntry=true, disassemble the entry point returned in the load result to see where execution begins.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| address | Yes | Start address (hex) or symbol, e.g. '0x401000' or 'main' | |
| count | No | Number of instructions (default 30) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description must cover behavioral traits. It discloses return fields, safety while paused, and address formats. However, it does not specify side effects (likely read-only), error behavior (e.g., invalid address), or constraints (e.g., maximum count). The description is adequate but not fully transparent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is concise (4 sentences) and well-structured. Each sentence serves a purpose: main action, return fields, safety, address format + tip. No redundancy or unnecessary details. It is front-loaded with the core purpose.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no output schema, the description explains return fields, which is helpful. It covers address formats, safety, and a use case tip. However, it does not detail output structure (e.g., metadata fields), error conditions, or supported instruction set. For a straightforward tool, it is fairly complete but could elaborate.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% with descriptions for all three parameters. The description adds value by explaining address formats (hex or symbol) and providing a practical tip. This goes beyond the schema, which only states 'Start address (hex) or symbol.' The count default is already in schema, but the tip enhances usability.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: 'Disassemble instructions starting at a given address in the loaded module.' It specifies the verb (disassemble), resource (instructions), and scope (starting address). The return fields are listed, and the tool is distinct from siblings like analyze_function or search_memory.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides context: 'Safe to call while paused' and a practical tip about using after load_executable with breakOnEntry=true. However, it lacks explicit guidance on when not to use, prerequisites (e.g., session must be active, module loaded), or alternatives among siblings.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
execute_commandA
Execute a raw x64dbg command string. Use this for advanced operations not covered by other tools. Returns the command output.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| command | Yes | x64dbg command, e.g. 'graph 0x401000' or 'findall 0, "MZ"' |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations exist, so description bears full burden. It only states the action and return value without disclosing potential hazards like state changes, crash risks, or invalidation of debug state, which are critical for a raw command execution tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two efficient sentences with no wasted words; every sentence adds value.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Despite the tool's simplicity, the lack of output schema and missing safety warnings (e.g., error handling, output format, side effects) makes the description incomplete for safe usage.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema has 100% coverage, but the description adds concrete examples (e.g., 'graph 0x401000') that illustrate usage and clarify command syntax beyond the schema's generic description.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it executes raw x64dbg commands and explicitly distinguishes from siblings by indicating it's for advanced operations not covered by other tools.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly states when to use it ('for advanced operations not covered by other tools'), providing clear context and implying alternatives exist, though it lacks explicit when-not-to-use guidance.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
find_stringsB
Search for ASCII and Unicode strings in the debuggee's memory. Optionally filter by content substring or module.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| module | No | Limit search to a specific module | |
| filter | No | Substring filter on string content | |
| minLength | No | Minimum string length (default 4) | |
| maxResults | No | Maximum results (default 200) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, and description does not disclose side effects, safety, or performance impact. Assumed read-only but not stated.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Single sentence front-loading main action, then optional filters. No wasted words.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Missing return format description, no mention of performance overhead or memory usage. Output schema absent but this is not compensated by description.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage 100%, descriptions already cover parameters. Description adds minimal value beyond naming the filter options.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Clear verb 'search', specific resource 'strings in debuggee's memory', and optional filters stated. Distinguishes from sibling tools like search_memory.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
No explicit guidance on when to use vs alternatives like search_memory or get_memory_map. Implied by content but not stated.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
generate_security_reportA
Run all security analysis tools and produce a consolidated report: packing detection, suspicious API analysis, anti-debug detection, and section anomaly checks. Useful as a first-pass triage.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| module | No | Module name (default: main executable) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description must cover behavioral traits. It states it runs multiple tools and produces a report, but does not disclose whether operations are read-only, potential side effects, or how the report is returned (format). This lack of detail leaves significant ambiguity.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is two sentences: first sentence enumerates the tool's actions, second sentence provides usage context. No extraneous information; every part serves a purpose.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The description communicates the tool's core function and context (first-pass triage) but omits details about output structure and behavioral safety, especially given the absence of output schema and annotations. It is adequate for a simple tool but not fully complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, and the description does not add meaning beyond the basic schema descriptions (session ID, module name with default). The tool's description does not explain how the module parameter affects the analysis. Baseline 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states that it runs all security analysis tools and produces a consolidated report, listing specific checks (packing, suspicious API, anti-debug, section anomaly). It distinguishes itself from sibling individual tools by emphasizing a consolidated output and first-pass triage utility.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
It mentions 'useful as a first-pass triage,' which implies when to use it, but does not explicitly state when not to use it or suggest alternatives like individual analysis tools for detailed checks. The guidance is present but not comprehensive.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_call_stackA
Get the call stack (backtrace) of the current thread. Shows return addresses, module names, and function names where available.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| maxFrames | No | Maximum stack frames to return (default 50) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description bears full burden for behavioral disclosure. It describes the output but does not explicitly state that the operation is read-only or non-destructive. However, the nature of a call stack retrieval implies a safe read, so it partially fulfills transparency expectations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is extremely concise: two short sentences that efficiently convey purpose and output. Every word adds value, with no redundancy or filler.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple retrieval tool with no output schema, the description covers the core functionality. It could mention that the call stack belongs to the current thread or that it requires a valid session, but overall it is sufficiently complete given the tool's low complexity.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 100% description coverage for both parameters (sessionId and maxFrames). The description adds no extra meaning beyond what the schema provides, so it meets the baseline of 3 for well-documented schemas.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the verb 'Get' and the resource 'call stack (backtrace)'. It specifies what is shown (return addresses, module names, function names), making the tool's purpose unambiguous and distinct from sibling tools like disassemble or get_registers.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
No guidance is provided on when to use this tool versus alternatives. The description lacks explicit context such as prerequisites, typical scenarios, or exclusions, leaving the agent without decision support for tool selection.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_cross_referencesA
Find all cross-references (xrefs) to or from the given address. Returns code references (calls/jumps) and data references (reads/writes).
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| address | Yes | Target address or symbol | |
| direction | No | 'to' = who references this address, 'from' = what this address references | to |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description must carry the burden. It discloses that both code and data references are returned and that direction can be specified. However, it does not mention side effects, permissions, or rate limits, which is acceptable for a read-only operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is extremely concise, with two sentences that immediately convey the tool's purpose. Every word is necessary; no fluff.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the absence of an output schema, the description explains that returns include code and data references. It covers the core functionality adequately but does not specify the format or limits of the references. Still sufficient for typical use.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, but the description adds meaning by explaining the direction enum values ("to", "from", "both") and clarifies that it returns references to or from the address. This goes beyond the schema's basic descriptions.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it finds cross-references (xrefs) to or from a given address, specifying both code and data references. It distinguishes itself from sibling tools by focusing on this specific cross-reference functionality.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies when to use (when needing cross-references) but does not provide explicit when-not-to-use guidance or mention alternative tools. No exclusions or alternatives are noted.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_exportsB
List all exported functions/symbols for a specific module.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| module | Yes | Module name (e.g. 'kernel32.dll') | |
| nameFilter | No | Filter by export name substring |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided and the description does not disclose behavioral traits such as read-only nature, required permissions, or performance implications.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Single sentence is concise and front-loaded with the core purpose. However, it is too brief and lacks additional context that could fit without bloat.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
No output schema exists and description does not explain return format (e.g., names, full details, pagination). Agent lacks information to fully interpret results.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Input schema covers all parameters with descriptions (100% coverage). The description adds no extra meaning beyond what the schema already provides.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Description clearly states verb 'list' and resource 'all exported functions/symbols for a specific module', distinguishing it from siblings like 'get_imports' or 'list_functions'.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
No explicit guidance on when to use this tool vs alternatives. The purpose is implied but no when-not or alternative tools are mentioned.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_importsB
List all imported functions for a specific module. Shows DLL name, function name, ordinal, and IAT address.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| module | No | Module name (default: main executable) | |
| dllFilter | No | Filter by importing DLL name substring | |
| functionFilter | No | Filter by function name substring |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Without annotations, the description implies read-only behavior via 'List', but does not explicitly confirm side-effect-free operation. It does not disclose potential performance impact, permission requirements, or error conditions (e.g., if module not found).
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single, efficient sentence that front-loads the purpose and key details. No filler or repetition.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
While the output is partially described (DLL name, function name, ordinal, IAT address), the description lacks details on ordering, pagination, or the exact structure of the response. Given no output schema, more comprehensive description of return format would be beneficial.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, so the baseline is 3. The description adds no extra meaning to the parameters beyond what the schema already provides; it only mentions output fields, which are not input parameters.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it lists imports for a module, specifying the output fields. It is specific about the resource (imported functions for a module) and verb (list), but does not differentiate from sibling tools like get_exports, though the tool's name already implies a focus on imports.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
No guidance on when to use this tool versus alternatives such as get_exports or list_functions. The description does not mention prerequisites like ensuring the module is loaded or that sessionId must be valid.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_memory_mapA
Return the virtual memory map of the debuggee process: all regions with base address, size, protection, type, and associated module.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| filterModule | No | Optional module name to filter regions by | |
| filterProtection | No | Optional protection filter, e.g. 'ERW' (Execute-Read-Write) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It indicates a read operation but does not disclose prerequisites (e.g., active session) or potential limitations. It adds minimal behavioral context beyond the purpose.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single concise sentence that efficiently conveys the tool's purpose and return details. Front-loaded with key information, no redundant or missing parts.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The description explains the return value (regions with fields) adequately given no output schema. However, it omits context like required session state or error conditions. Still, for a straightforward read tool, it is largely complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100% for all three parameters. The tool description does not add any extra semantic information about parameters beyond what is already in the schema, meeting the baseline.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool returns the virtual memory map with specific details (base address, size, protection, type, module). It uses a precise verb ('Return') and resource, and distinguishes from siblings like read_memory or search_memory.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
No explicit guidance on when to use or when not to use this tool vs alternatives. The description implies use when needing memory mapping info, but lacks context for selection among sibling tools.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_modulesA
List all modules (DLLs and the main EXE) loaded in the debuggee with base address, size, entry point, and file path.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Since no annotations are provided, the description carries full transparency burden. It clearly states it lists modules with specific details, implying a read-only operation. However, it could mention prerequisites like requiring an active debugging session or a paused debuggee.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single, front-loaded sentence of 25 words that efficiently conveys the tool's purpose and the data returned. No superfluous information.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no output schema, the description adequately describes both input (sessionId implied) and output fields. It could be more complete by noting that the list reflects the current state of the debuggee, but it is sufficient for a simple listing tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema has one parameter sessionId with 100% description coverage. The tool description does not add extra semantic context beyond 'Session ID'. Per guidelines, baseline is 3 when coverage is high.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description uses a specific verb 'List all modules' and clearly defines the resource as modules (DLLs and EXE) loaded in the debuggee. It also lists the returned fields: base address, size, entry point, and file path, distinguishing it from sibling tools like get_memory_map or get_exports.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies the tool is for getting an overview of loaded modules, but it does not provide explicit guidance on when to use this versus sibling tools (e.g., get_memory_map for memory regions, get_exports for declared exports). Lacks when-not-to-use or alternative tool mentions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_pe_headerA
Parse and return the PE header information for a module: DOS header, NT headers, section table, data directories, timestamp, subsystem, characteristics, etc.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| module | No | Module name (default: main executable) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries full burden. It states 'Parse and return' but lacks details on error handling (e.g., invalid module or session), whether it modifies state, or any side effects. The description is adequate but not comprehensive.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single sentence that efficiently conveys the purpose and scope. It is front-loaded with the key action ('Parse and return the PE header information') and enumerates details. Could be slightly more concise but overall well-structured.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the moderate complexity (2 parameters, no output schema), the description adequately outlines the return content (headers, sections, etc.) and default behavior. Missing error handling details but sufficient for typical use.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% with both parameters described. The description adds value beyond schema by noting that 'module' defaults to main executable, and by listing the specific PE components returned (DOS header, etc.), which compensates for missing output schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool parses and returns PE header information for a module, specifically listing DOS header, NT headers, section table, data directories, timestamp, subsystem, characteristics. It distinguishes from sibling tools (e.g., analyze_function, detect_packing) by focusing solely on PE headers.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
No explicit guidance on when or when not to use this tool compared to siblings. The context implies it's for analyzing PE headers, but no alternatives or exclusions are mentioned.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_registersA
Read the current CPU register values of the active thread. Includes general-purpose registers, instruction pointer (RIP/EIP), flags, and optionally segment and debug registers. REQUIRES: session must be paused (call get_status to check). On x64: returns RAX, RBX, RCX, RDX, RSI, RDI, RSP, RBP, RIP, R8-R15. On x86: returns EAX, EBX, ECX, EDX, ESI, EDI, ESP, EBP, EIP.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| includeSegment | No | Include segment registers (cs, ds, es, fs, gs, ss) | |
| includeDebug | No | Include debug registers (dr0-dr7) | |
| includeFpu | No | Include FPU / SSE registers |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. It clearly indicates a read-only operation, lists the register sets returned, and the prerequisite paused session. It does not mention side effects, but for a read operation this is transparent enough. Could explicitly state it does not modify state.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is very concise: two sentences plus an architecture-specific list. Every sentence adds essential information (action, prerequisite, registers). No fluff or redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no output schema, the description adequately explains what is returned (register names) and the prerequisite. It does not cover error conditions (e.g., what if session is not paused) but covers the main use case well. Minor gap in error handling, but overall complete for a read tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, so the baseline is 3. The description adds value by listing specific register names for each architecture and explaining the inclusion of segment/debug registers, which goes beyond the schema's boolean descriptions. This helps the agent understand what optional parameters affect.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it reads CPU register values of the active thread, lists specific register sets (general-purpose, RIP/EIP, flags, optional segments and debug registers), and distinguishes between x64 and x86 architectures. This specificity separates it from sibling tools like set_register or read_memory.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
It explicitly requires the session to be paused, with a pointer to check via get_status. While it doesn't explicitly list alternatives or exclusion conditions, the requirement is clear and directly informs the agent of a critical precondition.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_statusA
Query the current state of the debugger and active session. Returns bridge connectivity, session state (idle/paused/running/stepping/terminated), current instruction pointer, active thread, and a next-step hint. Call this whenever you are unsure what state the debugger is in before issuing step/continue/breakpoint operations. This is always safe to call — it does not change any debugger state.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | No | Session ID (optional — omit to get bridge-level status only) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description fully discloses behavior: it states the tool is safe and does not change debugger state, and lists the return fields. This mitigates the lack of annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is two sentences with no wasted words. The first sentence clearly states purpose and output; the second gives usage guidance and safety. Perfectly concise and front-loaded.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Despite no output schema, the description enumerates all return fields. The tool has one optional parameter, and its behavior is fully described. Completeness is high.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% for the single optional parameter. The description adds context beyond the schema by explaining the effect of omitting sessionId: 'omit to get bridge-level status only'. This adds meaningful guidance.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states 'Query the current state of the debugger and active session', specifying the verb 'query' and resource 'state'. It distinguishes from sibling tools like 'continue_execution' or 'step_into' by positioning itself as a state-checking tool.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description provides explicit guidance: 'Call this whenever you are unsure what state the debugger is in before issuing step/continue/breakpoint operations.' It implies this is a preparatory tool, though it does not explicitly list when to use alternatives.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_threadsB
List all threads in the debuggee process with their current state.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description must carry full behavioral disclosure. It only states a read operation ('list') but does not confirm safety, permissions, side effects, or response format. For a simple read tool, the risk is low but transparency is minimal.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Single sentence, no fluff. Every word adds value. Front-loaded with action and object.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple list tool with one parameter and no output schema, the description is sufficiently complete. It tells what it does and its input. No missing critical information given the tool's straightforward nature.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Only one parameter (sessionId) with 100% schema description coverage. The description adds no additional meaning beyond 'Session ID' from the schema. Baseline 3 applies as schema handles the parameter documentation adequately.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the verb 'List' and resource 'threads', and specifies scope ('all threads in the debuggee process') and output ('current state'). It distinguishes from siblings implicitly by focusing on threads, but does not explicitly differentiate from similar list tools like list_functions.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
No guidance on when to use this tool versus alternatives. The description does not mention context, preconditions, or when not to use it. An agent has no clue about trade-offs with sibling tools.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_breakpointsA
List all breakpoints in the session, including hit counts and conditions.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. It discloses the tool lists breakpoints but does not state side effects, required permissions, or any constraints. For a read-only tool, the description is adequate but minimal.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single sentence that is front-loaded and contains no extraneous words. Every part is essential.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple list tool with one parameter and no output schema, the description covers the purpose and additional data included. However, it could mention the return format or whether pagination is used. Minor gap.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 100% coverage with a description for sessionId. The description does not add meaning beyond what the schema already provides. Baseline score of 3 applies.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the verb 'List', the resource 'breakpoints', and the scope 'in the session'. It also specifies additional information included ('hit counts and conditions'), distinguishing it from siblings like set_breakpoint or remove_breakpoint.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage for listing breakpoints but provides no explicit guidance on when to use it versus siblings like set_breakpoint, remove_breakpoint, or check_section_anomalies. It does not mention prerequisites or exclusions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_functionsA
List recognised functions in the debuggee. Can filter by module name and/or name substring.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| module | No | Module name filter (e.g. 'target.exe') | |
| nameFilter | No | Substring filter on function name | |
| offset | No | Pagination offset | |
| limit | No | Max results |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. It correctly implies a read operation but does not disclose pagination behavior (though schema hints via offset/limit) or response format.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single clear sentence, concise and front-loaded. It could benefit from structured details but is effective.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given 5 parameters, no output schema, and no annotations, the description is minimal. It lacks explanation of return values, pagination, and expected behavior beyond what the schema provides.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema covers all 5 parameters with descriptions (100% coverage). The description adds minimal extra meaning, just reiterating filtering capability, so baseline 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the action ('List recognised functions') and the resource ('in the debuggee'), with filtering options. It is distinct from sibling tools such as 'analyze_function' or 'get_cross_references'.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage for listing functions with optional filters but does not explicitly state when to use or not use this tool, nor does it mention alternatives among siblings.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_sessionsA
List all active debugging sessions with their state and metadata.
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description indicates a read-only operation by listing sessions, but with no annotations, it doesn't disclose any potential side effects or prerequisites. It implies no mutations, but lacks explicit safety details.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
A single, concise sentence that directly describes the tool's purpose without any unnecessary words. It is front-loaded and efficient.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Considering zero parameters and no output schema, the description is largely complete. However, it could mention that the tool is a starting point for session management or that it returns IDs for use in other tools, but this is a minor gap.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
There are no parameters, so the schema fully covers them. The description adds value by indicating the output includes state and metadata, which is a helpful hint beyond the empty schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool lists all active debugging sessions and includes state and metadata. This is specific and distinguishes it from sibling tools like close_debugger or set_breakpoint.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
No guidance is provided on when to use this tool versus alternatives. For example, it doesn't mention that this tool is for discovering session IDs to use with other tools, or when to use it relative to tools like get_status or get_registers.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
load_executableA
START HERE — load a PE executable into x64dbg and create a debugging session. Returns a sessionId that ALL other tools require as their first parameter. Auto-detects 32-bit vs 64-bit PE and launches x32dbg or x64dbg accordingly. With breakOnEntry=true (default): execution stops at the entry point and the session state becomes 'paused' — you can immediately call step_into, get_registers, or disassemble. With breakOnEntry=false: the debuggee starts running; use set_breakpoint then continue_execution to pause it later. Only one session can be active at a time. Call terminate_session first if one exists.
| Name | Required | Description | Default |
|---|---|---|---|
| executablePath | Yes | Absolute path to the PE executable (.exe or .dll) | |
| commandLineArgs | No | Optional command-line arguments to pass to the executable | |
| breakOnEntry | No | Pause at the entry point (default true) | |
| autoAnalyze | No | Run initial analysis on load (default true) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description fully discloses behavior: auto-detection of 32/64-bit PE, debugger selection, session state transitions, and the impact of breakOnEntry. No contradictions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single well-structured paragraph with clear sentences, front-loading the purpose and progressively adding details. No redundant statements.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the complexity of a debugger entry point, the description covers core functionality, parameter effects, session management, and next steps. Even without an output schema, it mentions the return value sessionId and state, making it sufficiently complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, baseline 3. The description adds value by elaborating on breakOnEntry behavior (execution state, follow-up actions) and noting autoAnalyze default, though it could explain autoAnalyze consequences more. Overall, it enhances understanding beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool loads a PE executable into x64dbg and creates a debugging session, returning a sessionId. It is positioned as 'START HERE', distinguishing it from sibling tools that require this sessionId.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides explicit guidance: use first, only one active session requires termination, and details when to use breakOnEntry=true vs false with post-load actions. Effectively tells the agent when and how to use the tool.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
read_memoryA
Read raw bytes from the debuggee's virtual address space. Returns a hex+ASCII dump. Address must be in the debuggee's mapped memory (see get_memory_map for valid ranges). REQUIRES: session must be paused.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| address | Yes | Start address (hex, e.g. '0x00401000') | |
| size | No | Number of bytes to read (max 65536, default 256) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description carries full behavioral burden. It states output format (hex+ASCII dump), required paused state, and address validity constraint. Could be improved by mentioning error behavior for invalid addresses, but sufficiently transparent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two sentences, no filler. First sentence states purpose, second adds constraints and reference. Every word earns its place.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
No output schema, but description specifies return format. References sibling for valid ranges. Adequate for a read tool with 3 parameters; could mention error handling but not essential.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% with descriptions for all three parameters. Description adds context about address validity and return format, but mostly duplicates schema information. Baseline 3 with slight extra value.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Description starts with specific verb and resource: 'Read raw bytes from the debuggee's virtual address space.' It clearly distinguishes from siblings like write_memory, search_memory, and get_memory_map.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides explicit when-to-use: 'Address must be in the debuggee's mapped memory' with a reference to sibling get_memory_map, and a prerequisite: 'REQUIRES: session must be paused.'
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
remove_breakpointB
Remove a previously set breakpoint at the given address.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| address | Yes | Address of the breakpoint to remove |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden. It indicates a mutation operation but does not disclose behavior for invalid addresses, missing breakpoints, or required permissions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
A single, front-loaded sentence with no redundant words. Every part is necessary for basic understanding.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple removal tool with two parameters and no output schema, the description covers the essential purpose. However, it could include behavioral notes, but it is fairly complete given the tool's simplicity.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100% for the two parameters. The description adds no extra meaning beyond the schema, achieving the baseline of 3 for high coverage.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the verb 'remove', the resource 'breakpoint', and the constraint 'at the given address'. It effectively distinguishes from sibling tools like set_breakpoint and list_breakpoints.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
No explicit guidance on when to use this tool, prerequisites (e.g., session must be active), or what happens if the breakpoint doesn't exist. The description implies usage but lacks exclusions or alternatives.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
run_to_addressA
Set a one-shot breakpoint at the given address and continue execution. Stops when the address is reached or another breakpoint/exception fires first.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| address | Yes | Target address (hex, e.g. 0x00401000) or symbol name |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description discloses key behavioral traits: one-shot nature, continuation after setting, and stopping conditions (address hit, other breakpoint, or exception). With no annotations, this provides sufficient transparency, though it could mention error handling for invalid addresses.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is two sentences with no wasted words. It is front-loaded with the primary action and includes necessary conditions. Every sentence earns its place.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity as a debugger action and lack of output schema, the description covers the core functionality, parameters, and stopping conditions. It is complete enough for an agent to invoke correctly, though a note on return behavior would enhance it.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% and provides basic descriptions for each parameter. The tool description adds no additional semantic meaning beyond the schema, meeting the baseline. No extra context on formatting or validation is provided.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool sets a one-shot breakpoint at a given address and continues execution, specifying when it stops (address reached or other breakpoint/exception fires). This distinguishes it from siblings like set_breakpoint (persistent) and continue_execution (no breakpoint).
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
While the purpose implies use for temporary breakpoints to a specific address, the description does not explicitly state when to use it versus alternatives (e.g., step_into, step_over) or any exclusions. The context is clear but lacks direct guidance.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
search_memoryA
Search the debuggee's memory for a byte pattern or string. Supports hex patterns with wildcards (e.g. '4D 5A ?? ??') and text strings.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| pattern | Yes | Hex pattern with optional ?? wildcards, or a text string | |
| searchType | No | Pattern interpretation: hex bytes, ASCII text, or Unicode text | hex |
| startAddress | No | Start address (default: image base) | |
| endAddress | No | End address (default: end of image) | |
| maxResults | No | Maximum number of results (default 100) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description must bear the full burden. It discloses pattern syntax and wildcard support but does not mention side effects, performance implications, or that it is a read-only operation. Adequate but not rich.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Single sentence with essential information and an illustrative example. No padding; every word contributes to clarity.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given 6 parameters and no output schema, the description covers the core operation but omits what results look like (e.g., list of addresses with matched bytes). It is incomplete for an agent to fully understand the return format.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, so parameters are documented. The description adds value with an explicit example ('4D 5A ?? ??') and explains searchType options. This goes beyond the schema's descriptions.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's action: 'Search the debuggee's memory for a byte pattern or string.' It distinguishes from siblings like read_memory or write_memory by focusing on pattern search. Examples of wildcards and text strings make the purpose concrete.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage (when you want to find a pattern in memory) but does not explicitly state when to use it vs. alternatives like read_memory or analyze_function. No guidance on when not to use it or prerequisites.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
set_breakpointB
Set a breakpoint. Supports software BPs, hardware BPs (execute/read/write), and memory BPs. Optionally supply a condition expression or log text.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| address | Yes | Address (hex) or symbol name, e.g. '0x401000' or 'kernel32.CreateFileW' | |
| type | No | Breakpoint type (default: software) | software |
| condition | No | x64dbg condition expression, e.g. 'eax==0' | |
| logText | No | Text to log when the breakpoint hits (no break) | |
| name | No | Friendly name for this breakpoint |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description must fully disclose behavior. It mentions setting breakpoints but omits side effects (e.g., state changes, reuse of addresses, hardware breakpoint limits) and lacks details on success/failure outcomes.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is three concise sentences, each serving a purpose: stating the action, listing supported types, and mentioning optional features. No unnecessary words.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity (multiple breakpoint types, side effects) and lack of annotations or output schema, the description is incomplete. It does not explain prerequisites (e.g., session ID from an active session) or limitations (e.g., hardware breakpoint count).
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema already describes all parameters with 100% coverage, including details like address format and default type. The description adds marginal overview of breakpoint types and optional fields but does not enhance meaning beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states 'Set a breakpoint' and enumerates supported types (software, hardware, memory), making it distinct from sibling tools like remove_breakpoint or list_breakpoints.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage by listing breakpoint types and optional condition/log, but it does not explicitly guide when to use this tool versus alternatives like remove_breakpoint or when not to use it.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
set_registerC
Set the value of a single CPU register.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| register | Yes | Register name, e.g. 'rax', 'eip', 'zf' | |
| value | Yes | New value (hex for GP registers, '0'/'1' for flags) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are present, so the description must disclose all behavioral traits. It only says 'set the value,' implying a mutation, but does not describe side effects, error conditions, or required authorization. This is insufficient for an agent to understand the tool's full impact.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single sentence, very concise and to the point. It is front-loaded with the action and resource, but could benefit from slightly more detail without being verbose.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity and the rich schema coverage, the description is minimally adequate. However, it lacks behavioral context and usage guidance that would help an agent choose this tool over siblings, leaving gaps in completeness.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 100% description coverage, with each parameter already explained (register naming, value format). The description adds no additional meaning beyond the schema, resulting in a baseline score of 3.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the action ('Set') and the resource ('value of a single CPU register'). It is specific about what the tool does, though it does not differentiate from sibling tools like get_registers or write_memory.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
No guidance is provided on when to use this tool versus alternatives (e.g., write_memory) or any prerequisites. The schema implies sessionId is required, but the description does not address context or constraints.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
step_intoA
Execute one or more instructions, stepping INTO function calls. REQUIRES: session state must be 'paused'. Returns the new address, disassembly, module, and key register values after stepping. Use step_over instead if you want to skip over CALL instructions.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| count | No | Number of instructions to step (default 1) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Discloses prerequisites (session must be paused) and return values (new address, disassembly, module, register values). No annotations provided, so description carries full burden and does well, though could mention it modifies execution state implicitly.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two sentences, front-loaded with core action, no wasted words.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no annotations or output schema, description fully explains required state, how to use, return values, and provides alternative tool, making it self-contained.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, so baseline is 3. Description adds context about stepping into calls and return values but doesn't elaborate on parameter specifics beyond what schema already provides.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Description clearly states it executes instructions stepping into function calls, distinguishes from sibling tool step_over by specifying the action and scope.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly states when to use (session paused, want to step into calls) and when not (use step_over to skip CALLs). Includes prerequisite condition.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
step_outA
Run until the current function returns (execute until RET). REQUIRES: session state must be 'paused'. Useful for quickly leaving a called function and returning to the caller without stepping through every instruction.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations exist, so description carries full burden. It mentions execution until RET but omits side effects like breakpoint handling or potential infinite loops. Adequate but not exhaustive.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two sentences, no wasted words. Purpose and requirement are front-loaded. Efficient and clear.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the single parameter and no output schema, the description provides essential information. Could mention breakpoint interaction, but the tool is simple and the description suffices.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% with the parameter 'sessionId' described as 'Session ID'. The tool description adds no extra meaning, so baseline score applies.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description uses a specific verb ('run until current function returns') and clearly identifies the resource ('current function'). It distinguishes from siblings like step_into and step_over by focusing on leaving the function.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
States a prerequisite ('session state must be paused') and a usage scenario ('quickly leaving a called function and returning to the caller'). Does not explicitly contrast with alternatives, but the context is clear.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
step_overA
Execute one or more instructions, stepping OVER function calls. REQUIRES: session state must be 'paused'. If the current instruction is a CALL, the entire called function executes and control returns to the instruction after the CALL. Use step_into if you want to trace inside the called function.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| count | No | Number of instructions to step (default 1) |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description explains that on a CALL, the entire function executes and returns to the next instruction. It does not detail behavior for non-CALL instructions or error conditions, but the main behavioral trait is well covered.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is three sentences with no redundancy. It front-loads the action and includes a required precondition and alternative tool, all concisely.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (2 params with full schema, no output schema), the description sufficiently explains usage and behavior. It covers the key precondition and distinguishes from siblings. Minor omission: what happens on non-CALL instructions, but overall complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema already has 100% coverage for both parameters with descriptions. The description does not add extra semantic value beyond the schema, so baseline 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description uses the specific verb 'step OVER' and resource 'instructions', clearly distinguishing itself from sibling step_into by explaining the difference. It explicitly states the action and scope.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description explicitly requires session state 'paused' and tells when to use step_into instead, providing clear context and alternatives.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
switch_threadA
Switch the active thread. Subsequent register/stack/step operations will apply to this thread.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| threadId | Yes | Thread ID to switch to |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the burden. It discloses that subsequent operations apply to the new thread, but does not mention any side effects like state persistence or required permissions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two concise sentences front-load the core purpose and effect. No extraneous information wastes the agent's attention.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple state-changing tool with no output schema and full schema parameter coverage, the description fully explains the effect and context. No gaps remain.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% and both parameters have clear descriptions. The tool description does not add additional meaning beyond the schema, so baseline score of 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the verb 'Switch' and the resource 'active thread', and explains the consequence that subsequent operations will apply to this thread. It is specific and distinguishes from sibling tools like 'get_threads' which lists threads.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage when wanting to change thread context, but lacks explicit guidance on when to use versus alternatives like 'get_threads' or 'step_into'. No when-not to use or prerequisites are mentioned.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
terminate_sessionA
Stop the debuggee process and close the debugging session. x64dbg itself stays open and ready for the next load_executable call. Call this before loading a new executable, or when analysis is complete.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID to terminate |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the behavioral burden. It discloses that x64dbg stays open and ready for the next load_executable call, and implies it is a terminating action. However, it does not mention potential effects like unsaved changes.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description consists of two concise, front-loaded sentences with no redundant information.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a simple termination tool with one parameter and no output schema, the description covers purpose, usage, and post-behavior adequately. Could mention return status but not critical.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema has 100% coverage on the single parameter 'sessionId', so the description adds no extra semantic value. The schema's own description is sufficient.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the action ('Stop the debuggee process and close the debugging session') and the resource. It distinguishes from siblings like 'close_debugger' and 'continue_execution' by specifying the scope.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description explicitly says when to use the tool: 'before loading a new executable, or when analysis is complete.' It also notes that the debugger stays open, but does not explicitly mention when not to use it or alternatives.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
trace_executionB
Record an execution trace from the current position. Steps through instructions and records address + disassembly at each step. Stops after maxInstructions or a breakpoint.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| maxInstructions | No | Maximum instructions to trace (default 500) | |
| traceInto | No | true = step into calls, false = step over calls | |
| recordRegisters | No | Record full register state at each step (slower) | |
| breakOnCall | No | Stop tracing when this function/address is called |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden. It states that it records address and disassembly at each step and stops after maxInstructions or a breakpoint. However, it does not mention performance impact, state modifications (read-only?), or interruptibility.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is three sentences, front-loaded with the main action, and no wasted words. It could be more structured but is sufficiently concise.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no output schema, the description lacks details on the return format of the trace. It covers purpose and stopping conditions, but could mention output structure or prerequisites like an active session.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% with descriptions for each parameter. The tool description adds context about recording address+disassembly and stopping conditions, but does not significantly expand on what the schema already provides.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it records an execution trace by stepping through instructions, recording address and disassembly. It distinguishes from siblings like step_into or continue_execution by focusing on a trace of multiple steps.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description does not provide guidance on when to use this tool versus the many sibling debugging tools (e.g., step_into, continue_execution, run_to_address). It lacks explicit context or exclusion criteria.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
write_memoryA
Write bytes to the debuggee's virtual memory. Use with caution — writing to wrong addresses can crash the debuggee.
| Name | Required | Description | Default |
|---|---|---|---|
| sessionId | Yes | Session ID | |
| address | Yes | Target address (hex) | |
| hexBytes | Yes | Hex string of bytes to write, e.g. '90 90 90' for three NOPs |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description warns of potential crashes, a key behavioral trait. However, with no annotations, it lacks details on required state (e.g., suspended debuggee), permissions, or atomicity.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two sentences, front-loaded with purpose, no wasted words. Efficient and direct.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a write operation with no output schema and no annotations, the description is minimally adequate. It omits behavioral details like idempotency, return behavior, and error states.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, describing all three parameters. The description reiterates the hexBytes format but adds no new meaning beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states 'Write bytes to the debuggee's virtual memory', specifying the verb (Write) and resource (bytes to virtual memory). It implicitly differentiates from siblings like read_memory.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description warns about caution but does not explicitly state when to use this tool versus alternatives like patching or using breakpoints. No guidance on prerequisites or conditions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections. Dates show when Glama detected each change.
39 tool updates
v1.0.0- First observed
analyze_function - First observed
analyze_suspicious_apis - First observed
check_section_anomalies - First observed
close_debugger - First observed
collect_bp_args - First observed
continue_execution - First observed
detect_anti_debug - First observed
detect_packing - First observed
disassemble - First observed
execute_command - First observed
find_strings - First observed
generate_security_report - First observed
get_call_stack - First observed
get_cross_references - First observed
get_exports - First observed
get_imports - First observed
get_memory_map - First observed
get_modules - First observed
get_pe_header - First observed
get_registers - First observed
get_status - First observed
get_threads - First observed
list_breakpoints - First observed
list_functions - First observed
list_sessions - First observed
load_executable - First observed
read_memory - First observed
remove_breakpoint - First observed
run_to_address - First observed
search_memory - First observed
set_breakpoint - First observed
set_register - First observed
step_into - First observed
step_out - First observed
step_over - First observed
switch_thread - First observed
terminate_session - First observed
trace_execution - First observed
write_memory
TDQS
Most tools have distinct, well-defined purposes (e.g., step_into vs step_over, disassemble vs read_memory). However, tools like analyze_function and analyze_suspicious_apis could be confused if descriptions are not read carefully, and execute_command overlaps with other tools' capabilities.
All tool names use a consistent verb_noun pattern in snake_case (e.g., analyze_function, load_executable, continue_execution). No mixed conventions or vague verbs.
39 tools is on the higher end but justified by the breadth of debugger functionality. The tool set covers execution control, memory inspection, analysis, and session management without being excessive.
The tool set provides comprehensive coverage for a debugger/analysis server: loading, stepping, breakpoints, memory, registers, modules, security analysis, session management. No obvious gaps for typical reverse engineering tasks.
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