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edb_compare_memory

Read-onlyIdempotent

Compare two memory regions byte by byte to detect differences. Identify self-modifying code, verify binary patches, or analyze code changes.

Instructions

Compare two memory regions byte-by-byte and show differences. Useful for detecting self-modifying code, comparing loaded vs original code, or analyzing binary patches.

Args: params (CompareMemoryInput): Comparison parameters - address1 (str): First address (e.g., '0x400000') - address2 (str): Second address (e.g., '0x400100') - count (int): Number of bytes to compare (max: 4096)

Returns: str: Differing regions with hex values

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
paramsYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior4/5

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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, so the agent knows it's safe. The description adds useful behavioral context (byte-by-byte, differences shown) but does not go beyond annotations.

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

Conciseness4/5

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

The description is brief and front-loaded with purpose. The Args section is slightly redundant with the schema, but overall it is well-structured and efficient.

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

Completeness4/5

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

For a simple comparison tool with detailed parameters in schema and a readable output format, the description covers the essentials. It could mention edge cases or error conditions, but it is complete enough for typical use.

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?

The input schema already provides descriptions for all parameters (address1, address2, count). The description's Args section merely repeats this information without adding new semantics, so baseline 3 is appropriate.

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

Purpose5/5

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

The description clearly states the tool compares two memory regions byte-by-byte and shows differences. It provides specific use cases (self-modifying code, comparing loaded vs original code, binary patches) and distinguishes from siblings like edb_compare_sections and edb_binary_diff.

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

Usage Guidelines4/5

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

The description gives clear usage context by listing example scenarios. However, it does not explicitly state when not to use the tool or compare it to alternatives, so it lacks exclusion guidance.

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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