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ida-pro-mcp-plus: Instructions file for Codex

AGENTS.md

ida-pro-mcp-plus AGENTS.md is an instructions file for Codex, OpenCode from fantay0312/ida-pro-mcp-plus. It costs 1,131 tokens per session, scanned A, a copy of ida-pro-mcp CLAUDE.md, MIT.

Repository guidance for an MCP server that exposes IDA Pro reverse-engineering functions to connected tools. IDA Pro is software for disassembling and analysing compiled programs.

In plain words
What is it for?
Use it when adding or changing tools for disassembly, decompilation, memory inspection, renaming, patching, debugging, or type analysis.
Why use it?
It explains the server layout and rules such as running IDA calls on the main thread, which helps prevent unsafe integrations.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions AGENTS.md.

This is fantay0312/ida-pro-mcp-plus's own configuration. It tells Codex and OpenCode how to work on ida-pro-mcp-plus 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-plus configures →

not rated 6repo +1 5mo ago A scan 1,131 tokens copy · 92% MIT
View source ↗ fantay0312/ida-pro-mcp-plus
Reuse

Borrowing it

Nothing to install: this file belongs to fantay0312/ida-pro-mcp-plus. 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/fantay0312/ida-pro-mcp-plus/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/fantay0312/ida-pro-mcp-plus

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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Per session 1,131 This file is loaded in full into every session.
When invoked 1,131 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 92% 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.01131 $0.01131
Opus 5 $0.00566 $0.00566
Sonnet 5 $0.00226 $0.00226
Haiku 4.5 $0.00113 $0.00113

Measured 9d ago against content hash 6435be6c392d, 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-plus AGENTS.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 9d 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

92% identical to ida-pro-mcp CLAUDE.md — 5 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.

AGENTS.md · 157 lines

How it starts

The opening of the file, as written. The whole thing — 157 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.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_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 --host 127.0.0.1 --port 8745 path/to/binary
uv run idalib-mcp --isolated-contexts --host 127.0.0.1 --port 8745 path/to/binary
uv run ida-pro-mcp --unsafe

Read the full file on GitHub · 157 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. 9d ago First seen · 157 lines · 1,131 tokens per session scan A 6435be6c392d

Subscribe to this mod's changes

ida-pro-mcp-plus AGENTS.md is an instructions file published in the GitHub repository fantay0312/ida-pro-mcp-plus (6 stars, last pushed 5mo ago), licensed MIT. It adds 1,131 tokens to every session, about $0.0057 per session on Opus 5. A static security scan graded it A with 0 findings. It is 92% identical to ida-pro-mcp CLAUDE.md, differing in 5 lines, and is treated as a copy.

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