aa-mcp: Instructions file for Codex

AGENTS.md

aa-mcp AGENTS.md is an instructions file for Codex, OpenCode from Leev1s/aa-mcp. It costs 571 tokens per session, scanned A, original, MIT.

Repository-specific development instructions for aa-mcp, a Python MCP server package. They describe its files, commands, coding conventions, and testing expectations.

In plain words
What is it for?
Use them when developing aa-mcp, including installing dependencies, running the server, building the package, adding tests, and following its Python conventions.
Why use it?
They give an agent the project’s rules and structure before it changes code, reducing avoidable setup and style mistakes.

Instructions file for CodexOpenCode

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

This is Leev1s/aa-mcp's own configuration. It tells Codex and OpenCode how to work on aa-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 aa-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Leev1s/aa-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/Leev1s/aa-mcp/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/Leev1s/aa-mcp

Made for: Codex, OpenCode.

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.

agentmods badge for aa-mcp AGENTS.md

README.md
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Your own site
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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.

agentmods 80×15 button for aa-mcp AGENTS.md

Your own site · 80×15
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Per session 571 This file is loaded in full into every session.
When invoked 571 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 $0.00571 $0.00571
Opus 5.5 $0.00228 $0.00228
Sonnet 5.5 $0.00114 $0.00114
Haiku 4.5 $0.00057 $0.00057

Measured 2mo ago against content hash 970a02402547, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

aa-mcp 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 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.

AGENTS.md · 53 lines

How it starts

The opening of the file, as written. The whole thing — 53 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Repository Guidelines

Project Structure & Module Organization

This is a Python MCP server package using a src layout. Core code lives in src/aa_mcp/:

  • server.py: FastMCP tool definitions and CLI entry point.
  • client.py: Artificial Analysis API client and API error types.
  • snapshot.py: local snapshot persistence, normalization, and diff formatting.
  • __init__.py: package metadata surface.

Project metadata and packaging configuration are in pyproject.toml; dependency locking is in uv.lock. There is currently no committed tests/ directory, so add one when introducing automated coverage.

Build, Test, and Development Commands

Use uv for all Python workflows.

  • uv sync: install locked dependencies for local development.
  • uvx aa-mcp: run the published MCP server using stdio transport.
  • uv build: build source and wheel distributions.
  • uv run pytest: run the test suite once tests are added.

For manual server checks, set ARTIFICIAL_ANALYSIS_API_KEY before launching:

export ARTIFICIAL_ANALYSIS_API_KEY="aa_your_key_here"
uvx aa-mcp

Coding Style & Naming Conventions

Target Python 3.10+. Use type hints for public helpers and tool functions. Keep modules small and purpose-specific, following the existing split between server orchestration, API access, and snapshot logic.

Use snake_case for functions, variables, and modules; PascalCase for exception and class names. MCP tool names should keep the existing aa_ prefix, for example aa_healthcheck. Prefer official Artificial Analysis API field names in returned data and transformation code.

Testing Guidelines

Add tests under tests/ with filenames like test_client.py or test_snapshot.py. Focus unit tests on API error handling, model matching, sorting behavior, snapshot normalization, and diff output. Mock HTTP calls rather than relying on the live Artificial Analysis API. Run tests with:

uv run pytest

Commit & Pull Request Guidelines

Read the full file on GitHub · 53 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. 2mo ago First seen · 53 lines · 571 tokens per session scan A 970a02402547

Subscribe to this mod's changes

aa-mcp AGENTS.md is an instructions file published in the GitHub repository Leev1s/aa-mcp (3 stars, last pushed 5mo ago), licensed MIT. It adds 571 tokens to every session, about $0.0023 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.

Related

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