What is IDA-instances-MCP CLAUDE.md?

Repository instructions for building and maintaining an IDA Pro MCP server. IDA Pro is software for examining compiled programs, and the instructions cover its analysis, memory, types, debugging, and scripting interfaces.

They are for developing or modifying an IDA Pro integration, including features for disassembly, decompilation, cross-references, memory patching, renaming, types, and debugging.

They give developers consistent rules for safely calling IDA’s programming interface, including its requirement that certain calls run on the main thread.

How Claude-Reverser/IDA-instances-MCP configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to Claude-Reverser/IDA-instances-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/Claude-Reverser/IDA-instances-MCP/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/Claude-Reverser/IDA-instances-MCP

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/claude-reverser/ida-instances-mcp/claude-md/github.svg)](https://agentmods.dev/instructions/claude-reverser/ida-instances-mcp/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/claude-reverser/ida-instances-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/claude-reverser/ida-instances-mcp/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>

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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/claude-reverser/ida-instances-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/claude-reverser/ida-instances-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

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 100% copy Near-identical to another mod 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.

Model	Per session	Once invoked
Fable 5.1	$0.01135	$0.01135
Opus 5.5	$0.00454	$0.00454
Sonnet 5.5	$0.00227	$0.00227
Haiku 4.5	$0.00113	$0.00113

Measured 2mo ago against content hash 2500f7966425, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

IDA-instances-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 2mo 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

This is a copy

100% identical to ida-pro-mcp CLAUDE.md — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

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.

2mo ago First seen · 158 lines · 1,135 tokens per session scan A 2500f7966425

Subscribe to this mod's changes

IDA-instances-MCP CLAUDE.md is an instructions file published in the GitHub repository Claude-Reverser/IDA-instances-MCP (172 stars, last pushed 2mo ago), licensed MIT. It adds 1,135 tokens to every session, about $0.0045 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to ida-pro-mcp CLAUDE.md, differing in 0 lines, and is treated as a copy.

Debugging

IDA-instances-MCP CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
IDA-instances-MCP CLAUDE.mdClaude-Reverser/IDA-instances-MCP	Instructions file	172	2mo ago	MIT	A	1,135	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

IDA-instances-MCP: Instructions file for Claude Code