Borrowing it
Nothing to install: this file belongs to reaatech/agents-md-kit. 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/reaatech/agents-md-kit/main/AGENTS.mdgit clone --depth 1 https://github.com/reaatech/agents-md-kitWrote 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/reaatech/agents-md-kit/agents-md)<a href="https://agentmods.dev/instructions/reaatech/agents-md-kit/agents-md"><img src="https://agentmods.dev/badge/instructions/reaatech/agents-md-kit/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/reaatech/agents-md-kit/agents-md"><img src="https://agentmods.dev/badge/instructions/reaatech/agents-md-kit/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 | $0.04162 | $0.04162 |
| Opus 5.5 | $0.01665 | $0.01665 |
| Sonnet 5.5 | $0.00832 | $0.00832 |
| Haiku 4.5 | $0.00416 | $0.00416 |
Grade A, and why
agents-md-kit 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.
How it starts
The opening of the file, as written. The whole thing — 532 lines — stays where its author put it; the contents beside it link to each section on GitHub.
agents-md-kit — Agent Development Guide
What this is
This document defines how to use agents-md-kit to create, validate, and maintain
AGENTS.md and SKILL.md files — the "durable agent instruction artifacts" that define
how AI agents behave, what skills they possess, and how they integrate into multi-agent
systems.
Target audience: Engineers building AI agents who need to create standardized agent instruction files that follow community best practices and can be validated for correctness, completeness, and quality.
Architecture Overview
agents-md-kit is a pnpm monorepo of 9 independently versioned packages published
under the @reaatech/agents-markdown-* scope, plus examples and end-to-end tests.
┌─────────────┐ ┌─────────────┐ ┌─────────────┐ ┌─────────────┐
│ Parser │ │ Validator │ │ Linter │ │ Reporter │
│ (remark) │───▶│ (zod) │───▶│ (rules) │───▶│ (4 formats) │
└─────────────┘ └─────────────┘ └─────────────┘ └─────────────┘
│ │
▼ ▼
┌─────────────┐ ┌─────────────┐
│ Core │ │ Scaffold │
│ (types + │ │ (handlebars)│
│ schemas) │ └─────────────┘
└─────────────┘ │
│ ┌──────┴──────┐
▼ ▼ ▼
┌─────────────────────────────────────────────────────────────────────┐
│ CLI │ MCP Server │
│ (commander) │ (@modelcontextprotocol) │
└─────────────────────────────────────────────────────────────────────┘
│
▼
┌─────────────────────────────────────────────────────────────────────┐
│ Observability (pino + OTel) │
└─────────────────────────────────────────────────────────────────────┘
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 · 532 lines · 4,162 tokens per session scan A 6f6b7f97bb5f
agents-md-kit AGENTS.md is an instructions file published in the GitHub repository reaatech/agents-md-kit (2 stars, last pushed 11d ago), licensed MIT. It adds 4,162 tokens to every session, about $0.0166 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.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.