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AGENTS.md and llms.txt Writer-Reviewer
For AGENTS.md it covers runnable build, test, and run commands, code conventions, a map of where logic lives, and the gotchas that trip agents up.
$14
AGENTS.md and llms.txt Writer-Reviewer
Example session with this skill installed
Review the AGENTS.md in this repo and tell me if it's ready for a coding agent. Then draft an llms.txt for our docs site at example.com. Give me a PASS or REVISE verdict with a prioritized fix list, and flag anything that wastes context.
- Read your context and instructions
- Compiled the agents md
AGENTS.md — Verdict: REVISE
Priority fixes
- Build/test commands missing. Add the exact commands an agent should run, e.g.
npm install,npm run build,npm test. - No code map. Add a short "where things live" section (e.g. app logic in src/, API routes in src/api/).
- Gotcha undocumented. Note that migrations must run before the test suite.
Context efficiency: removed ~180 tokens of filler ("This project is a wonderful...", "please be careful"). Keep instructions imperative.
llms.txt — drafted (ready to commit):
Example Docs
Documentation for the Example API and SDK.
Docs
- Quickstart: Install and first request
- API Reference: Endpoints and parameters
Optional
Verdict: PASS once the two AGENTS.md commands above are confirmed against your project.
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What you get
About this skill
AI agents are now a primary reader of your documentation: a coding agent opens AGENTS.md before it touches your repo, and a browsing agent reads llms.txt before it uses your site. Both are young conventions, and most are missing, vague, or padded with words that waste the very context window they are meant to fill. This skill writes them properly and reviews existing ones against what an agent actually needs. For AGENTS.md it covers runnable build, test, and run commands, code conventions, a map of where logic lives, and the gotchas that trip agents up. For llms.txt it produces the correct structure — H1 name, summary, and curated, linked sections an agent can navigate. It has a write mode that drafts the file ready to commit, and a review mode that returns a PASS or REVISE verdict with a prioritized fix list, including a context-efficiency pass that cuts the filler tokens agentic engineers warn about. Works with Claude Code, Cursor, Codex CLI, Gemini CLI, and any SKILL.md agent.
How to install
Works the same in every agent - Claude, Cursor, Codex, Copilot and 20+ more.
- 1
Download the ZIP
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- 2
Unzip into your skills folder
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- 3
Ask your agent to use it
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