angrMCP: Instructions file for Codex

AGENTS.md

angrMCP AGENTS.md is an instructions file for Codex, OpenCode from karimodm/angrMCP. It costs 1,569 tokens per session, scanned A, original, MIT.

An operations guide for an MCP server built around angr, a Python toolkit for analyzing programs and binaries. It covers the environment, repository layout, dependencies, and test workflow.

In plain words
What is it for?
Use it when installing dependencies, running the angr MCP server’s unit tests, or working with its bundled sample binaries and reference code.
Why use it?
It records the setup and limitations that can affect binary-analysis tests, such as missing 32-bit system libraries or a C compiler.

Instructions file for CodexOpenCode

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

This is karimodm/angrMCP's own configuration. It tells Codex and OpenCode how to work on angrMCP 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 angrMCP configures →

Reuse

Borrowing it

Nothing to install: this file belongs to karimodm/angrMCP. 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/karimodm/angrMCP/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/karimodm/angrMCP

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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Per session 1,569 This file is loaded in full into every session.
When invoked 1,569 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 $0.01569 $0.01569
Opus 5.5 $0.00628 $0.00628
Sonnet 5.5 $0.00314 $0.00314
Haiku 4.5 $0.00157 $0.00157

Measured 1mo ago against content hash 2fe915dd74de, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

angrMCP 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 1mo 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.

AGENTS.md · 131 lines

How it starts

The opening of the file, as written. The whole thing — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Operations Guide

This document records the workflow followed so far, key decisions, and rules for future human or agent contributors working on the angr MCP server project.

Environment & Tooling

  • Python: 3.13 (system interpreter). A dedicated virtual environment is created via uv venv .venv. Keep UV_CACHE_DIR=.uv-cache to store build artifacts locally.
  • Dependencies: install claripy and angr from PyPI inside the virtual environment (uv pip install --python .venv/bin/python claripy angr).
  • Testing: run .venv/bin/python -m unittest discover tests to cover both the synthetic sample binary suite and the angr CTF Phase 1 regressions.
  • Binary samples: Phase 1 tests rely on bundled 32-bit angr CTF binaries. Native replay assertions will skip automatically if /lib/ld-linux.so.2 (or equivalent) is unavailable. The legacy sample binary still compiles on the fly and therefore continues to require a working C compiler (cc or gcc).

Repository Layout Snapshot

  • angr_mcp/ – MCP server implementation and runtime registry.
  • resources/ – Bundled reference material and companion codebases:
    • resources/angr – Upstream angr source tree (currently unused for installs; PyPI packages are consumed instead).
    • resources/awesome-angr – Community exploration techniques dynamically imported by the server when requested.
    • resources/angr_ctf – Capture-the-flag training levels and build scripts for learning angr-based symbolic exploitation (MetaCTF workshop content).
    • resources/dAngr – dAngr examples and docs for additional exploration strategies.
    • resources/GhidraMCP – Shared assets for coordinating workflows with the Ghidra MCP server.
  • angr_mcp/utils/ – Shared binary-inspection and state-mutation helpers used by handlers and tests.
  • tests/test_mcp_server.py – Integration tests; doubles as executable examples for the handler workflow.
  • tests/test_phase1_ctf.py – Automates angr CTF levels 00–04 through MCP handlers, asserting predicate metadata, register/stack tooling, and native replay.
  • tests/test_deep_call_partition.py – Builds a deeply nested binary and exercises call-chain recovery, state-budget limits, and chunked symbolic execution to reach a buried function.
  • pyproject.toml – Minimal configuration for uv environment management.

Read the full file on GitHub · 131 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. 1mo ago First seen · 131 lines · 1,569 tokens per session scan A 2fe915dd74de

Subscribe to this mod's changes

angrMCP AGENTS.md is an instructions file published in the GitHub repository karimodm/angrMCP (10 stars, last pushed 10mo ago), licensed MIT. It adds 1,569 tokens to every session, about $0.0063 per session on Opus 5.5. 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 2026-08-31.

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