AGENTS.md is an open file format for giving AI coding agents project-specific context and instructions, functioning much like a README intended for agents. Developers use it to explain how an agent should work within a codebase. The catalogue entry is an instruction based on this format.
Borrowing it
Nothing to install: this file belongs to agentsmd/agents.md. 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/agentsmd/agents.md/main/AGENTS.mdgit clone --depth 1 https://github.com/agentsmd/agents.mdWrote 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/agentsmd/agents.md/agents-md)<a href="https://agentmods.dev/instructions/agentsmd/agents.md/agents-md"><img src="https://agentmods.dev/badge/instructions/agentsmd/agents.md/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/agentsmd/agents.md/agents-md"><img src="https://agentmods.dev/badge/instructions/agentsmd/agents.md/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 | $0.00441 | $0.00441 |
| Opus 5.5 | $0.00176 | $0.00176 |
| Sonnet 5.5 | $0.00088 | $0.00088 |
| Haiku 4.5 | $0.00044 | $0.00044 |
Grade A, and why
agents.md 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.
Copies of this mod
2 near-identical copies found in the catalogue:
- agents.md AGENTS.md — 100% identical, 0 lines differ
- Agent-Md AGENTS.md — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 44 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS Guidelines for This Repository
This repository contains a Next.js application located in the root of this repository. When working on the project interactively with an agent (e.g. the Codex CLI) please follow the guidelines below so that the development experience – in particular Hot Module Replacement (HMR) – continues to work smoothly.
1. Use the Development Server, not npm run build
- Always use
npm run dev(orpnpm dev,yarn dev, etc.) while iterating on the application. This starts Next.js in development mode with hot-reload enabled. - Do not run
npm run buildinside the agent session. Running the production build command switches the.nextfolder to production assets which disables hot reload and can leave the development server in an inconsistent state. If a production build is required, do it outside of the interactive agent workflow.
2. Keep Dependencies in Sync
If you add or update dependencies remember to:
- Update the appropriate lockfile (
package-lock.json,pnpm-lock.yaml,yarn.lock). - Re-start the development server so that Next.js picks up the changes.
3. Coding Conventions
- Prefer TypeScript (
.tsx/.ts) for new components and utilities. - Co-locate component-specific styles in the same folder as the component when practical.
4. Useful Commands Recap
| Command | Purpose |
|---|---|
npm run dev |
Start the Next.js dev server with HMR. |
npm run lint |
Run ESLint checks. |
npm run test |
Execute the test suite (if present). |
npm run build |
Production build – do not run during agent sessions |
Following these practices ensures that the agent-assisted development workflow stays fast and dependable. When in doubt, restart the dev server rather than running the production build.
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 · 44 lines · 441 tokens per session scan A 7f8ae31d1350
agents.md AGENTS.md is an instructions file published in the GitHub repository agentsmd/agents.md (25,347 stars, last pushed 1mo ago), licensed MIT. It adds 441 tokens to every session, about $0.0018 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 2026-08-30.
agents.md AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| agents.md AGENTS.mdagentsmd/agents.md | Instructions file | 25k | 1mo ago | MIT | A | 441 | 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 |