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ida-pro-mcp: Instructions file for Claude Code

CLAUDE.md

ida-pro-mcp CLAUDE.md is an instructions file for Claude Code from mrexodia/ida-pro-mcp. It costs 1,135 tokens per session, scanned A, original, MIT.

A repository instruction file for an IDA Pro MCP server, which lets coding tools use IDA Pro for examining and changing compiled programs.

In plain words
What is it for?
Use it when adding or modifying server features for disassembly, decompilation, memory, types, comments, renaming, patching, debugging, or related IDA APIs.
Why use it?
It explains the project structure and rules needed to make safe, consistent changes. In particular, IDA SDK calls must run on IDA's main thread.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md.

This is mrexodia/ida-pro-mcp's own configuration. It tells Claude Code how to work on ida-pro-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ida-pro-mcp configures →

not rated 12krepo +92 12d ago A scan 1,135 tokens original MIT
View source ↗ mrexodia/ida-pro-mcp plugins.hex-rays.com
About the project

ida-pro-mcp connects IDA Pro, a program for examining compiled software, with language models through the Model Context Protocol, allowing an AI assistant to help with reverse engineering. Reverse engineers use it with IDA Pro and a supported MCP client to investigate binary programs. The catalogue entries provide the plugin, skill, and instructions for using this integration.

mrexodia/ida-pro-mcp · 11,927 stars · on GitHub · plugins.hex-rays.com

Reuse

Borrowing it

Nothing to install: this file belongs to mrexodia/ida-pro-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/mrexodia/ida-pro-mcp/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/mrexodia/ida-pro-mcp

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Per session 1,135 This file is loaded in full into every session.
When invoked 1,135 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.01135 $0.01135
Opus 5 $0.00567 $0.00567
Sonnet 5 $0.00227 $0.00227
Haiku 4.5 $0.00113 $0.00113

Measured 10d ago against content hash 2500f7966425, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

ida-pro-mcp CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

4 near-identical copies found in the catalogue:

CLAUDE.md · 158 lines

How it starts

The opening of the file, as written. The whole thing — 158 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

Guidance for working in this repository.

What this project is

IDA Pro MCP Server: exposes IDA Pro / idalib functionality to MCP clients.

Main pieces:

  • src/ida_pro_mcp/server.py: MCP server entrypoint
  • src/ida_pro_mcp/idalib_server.py: headless idalib server
  • src/ida_pro_mcp/ida_mcp/: IDA/plugin-side APIs

Important API modules:

  • api_core.py: IDB metadata, functions, strings, imports
  • api_analysis.py: decompilation, disassembly, xrefs, paths, pattern search
  • api_memory.py: bytes/ints/strings, patching
  • api_types.py: structs, type inference, type application
  • api_modify.py: comments, renaming, asm patching
  • api_stack.py: stack frame operations
  • api_sigmaker.py: signature creation, scanning, xref signatures (uses sigmaker.py)
  • api_debug.py: debugger control, unsafe / low priority for tests
  • api_python.py: execute Python in IDA context
  • api_resources.py: ida:// MCP resources

Core implementation rules

IDA thread safety

All IDA SDK calls must run on the main thread. Use:

from .rpc import tool
from .sync import idasync

@tool
@idasync
def my_tool(...):
    ...

API conventions

  • Prefer batch-first APIs.
  • Many functions accept either a comma-separated string or a list.
  • Use full type hints and Annotated[...] descriptions.
  • The function docstring becomes the MCP tool description.

Example:

def my_api(addrs: Annotated[str, "Addresses (0x401000, main) or list"]) -> list[dict]:
    ...

Common helpers

  • Parse addresses with parse_address()
  • Normalize batch input with normalize_list_input() / normalize_dict_list()
  • Use shared pagination / filtering helpers from utils.py

Unsafe operations

Debugger or destructive operations should be marked unsafe:

from .rpc import tool, unsafe

@unsafe
@tool
@idasync
def dangerous_op(...):
    ...

Development commands

Run

uv run ida-pro-mcp
uv run ida-pro-mcp --transport http://127.0.0.1:8744/sse
uv run idalib-mcp --stdio path/to/binary
uv run idalib-mcp --host 127.0.0.1 --port 8745 path/to/binary
uv run ida-pro-mcp --unsafe

Read the full file on GitHub · 158 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 158 lines · 1,135 tokens per session scan A 2500f7966425

Subscribe to this mod's changes

ida-pro-mcp CLAUDE.md is an instructions file published in the GitHub repository mrexodia/ida-pro-mcp (11,927 stars, last pushed 12d ago), licensed MIT. It adds 1,135 tokens to every session, about $0.0057 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

ida-pluginida-promcpmcp-servermodelcontextprotocolreverse-engineering
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