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IDA-MCP

IDA-MCP

by Captain-AI-Hub
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Python
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Dbg Callstack

dbg_callstack

Retrieve the current call stack from an active debugger to inspect execution flow, optionally targeting a specific IDA instance when multiple databases are open.

Instructions

Get current call stack (requires active debugger).

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "dbg_callstack"
  }
}

Input Schema

NameRequiredDescriptionDefault
timeoutNoTimeout in seconds
instance_idNoREQUIRED whenever more than one database is open (from open_database's result or list_databases()); optional only while exactly one instance is live.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv1.0.1
    • changedInput schema / properties / instance_id / description
      Previous value: -"Instance id override"New value: +"REQUIRED whenever more than one database is open (from open_database's result or list_databases()); optional only while exactly one instance is live."
  2. First observedv0.9.7

TDQS

B3.2/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the full behavioral burden. It discloses only the active-debugger prerequisite and omits important details such as whether the tool is read-only, whether execution must be paused, whether it targets the current thread, and what the call stack output contains.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single front-loaded sentence with no wasted words. It communicates the core action and the key prerequisite immediately.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

There is no output schema and no annotations, so the description should explain the return value and key runtime behavior. It does not describe the call stack result format, thread scope, or whether the debugger must be paused, leaving significant gaps for a debugger inspection tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the input schema already explains both timeout and instance_id, including the detailed instance_id requirement. The description adds no additional parameter meaning beyond the schema baseline.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a specific verb and resource: 'Get current call stack'. This clearly distinguishes it from sibling debugger tools like dbg_regs or dbg_status, though it does not explicitly name alternatives. The parenthetical prerequisite adds useful scope.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It includes the prerequisite 'requires active debugger', which gives clear context for use. However, it does not state when to use this tool versus alternatives such as dbg_regs, dbg_thread_regs, or dbg_status, leaving usage guidance implied.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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