Borrowing it
Nothing to install: this file belongs to getmaat/maat. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/getmaat/maat/main/AGENTS.mdgit clone --depth 1 https://github.com/getmaat/maatWrote 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.
[](https://agentmods.dev/instructions/getmaat/maat/agents-md)<a href="https://agentmods.dev/instructions/getmaat/maat/agents-md"><img src="https://agentmods.dev/badge/instructions/getmaat/maat/agents-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.
<a href="https://agentmods.dev/instructions/getmaat/maat/agents-md"><img src="https://agentmods.dev/badge/instructions/getmaat/maat/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.01462 | $0.01462 |
| Opus 5.5 | $0.00585 | $0.00585 |
| Sonnet 5.5 | $0.00292 | $0.00292 |
| Haiku 4.5 | $0.00146 | $0.00146 |
Grade C, and why
maat AGENTS.md scanned grade C with 1 finding 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.
Hidden instructionshighPrompt injection
Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.
<!-- This is the single source of truth for AI coding agents working in this repository. It follows the AGENTS.md open standard (https://agents.md) and is read natively by Codex, Cursor, Gemini CLI, Jules, Factory, Aider How it starts
The opening of the file, as written. The whole thing — 152 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Ma'at
Project overview
Ma'at is a documentation-as-code framework that keeps three things in
lockstep: a repository's docs/ tree, its cross-agent instruction files, and
its source code. It is designed so that documentation can be maintained
interchangeably by AI coding agents, human developers, and CI — and so that
any agent harness (Claude Code, Copilot, Codex, Cursor, Windsurf, Hermes,
opencode, and others) discovers and updates the same docs.
Ma'at ships a small Go CLI (maat) with zero runtime dependencies
(see ADR 0011) —
distributed as a single static binary — with three verbs — init, sync,
check — and a documented convention for how the docs/ tree is structured
and kept current.
This repository dogfoods itself: the docs you are reading were scaffolded
by maat init and are validated by maat check in CI.
Where the documentation lives
All durable knowledge lives in docs/. It is documentation-as-code:
versioned with the source, reviewed in pull requests, and treated as a
first-class part of every change.
- Start here:
docs/llms.txt— a machine-readable index of every document. Read it first to locate what a task needs. - Human entry point:
docs/index.md. - Organized into:
docs/architecture/— how the system is built.docs/decisions/— Architecture Decision Records; the why, append-only.docs/guides/— how to develop, test, deploy, troubleshoot.docs/reference/— factual surface: CLI, config, front-matter schema.docs/meta/— conventions and glossary for the docs.
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 · 152 lines · 1,462 tokens per session scan C c29cd5e7c52c
maat AGENTS.md is an instructions file published in the GitHub repository getmaat/maat (4 stars, last pushed 20d ago), licensed Apache-2.0. It adds 1,462 tokens to every session, about $0.0058 per session on Opus 5.5. A static security scan graded it C with 1 finding (hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
maat AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| maat AGENTS.mdgetmaat/maat | Instructions file | 4 | 20d ago | Apache-2.0 | C | 1,462 | Codex, OpenCode |
| 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 |