Borrowing it
Nothing to install: this file belongs to vaayne/agent-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/vaayne/agent-kit/main/AGENTS.mdgit clone --depth 1 https://github.com/vaayne/agent-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/vaayne/agent-kit/agents-md)<a href="https://agentmods.dev/instructions/vaayne/agent-kit/agents-md"><img src="https://agentmods.dev/badge/instructions/vaayne/agent-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/vaayne/agent-kit/agents-md"><img src="https://agentmods.dev/badge/instructions/vaayne/agent-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 | $0.00383 | $0.00383 |
| Opus 5.5 | $0.00153 | $0.00153 |
| Sonnet 5.5 | $0.00077 | $0.00077 |
| Haiku 4.5 | $0.00038 | $0.00038 |
Grade A, and why
agent-kit AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 20d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Agent Instructions
_AGENTS.md is the shared instruction file this repo ships to every framework. It is
not this file's job to restate it; read it directly when working on its content.
Layout
skills/— local skills, one directory per skill, plusremote-skills.txtconfig/claude/,config/codex/, andconfig/pi/— public agent configuration.mise/tasks/sync/— configuration, skill, and BB server sync tasksscripts/sync_config.py— configuration deployment with backups and a baseline
Commands
mise run format— dprint across TS/JSON/YAML/TOML/Markdown/HTML and ruff for Pythonmise run sync— format, copy configuration, link instructions, and sync skills to BBmise run sync:skills— copy local and remote skills toBB_SKILLS_TARGETmise run sync:config -- --check— check configuration without writing files"$(mise which python3)" -m unittest discover -s tests -v— configuration and skill sync tests
Keep tokens, login state, transcripts, and machine-specific provider settings out
of config/. Configuration sync uses copies, backs up changes, and refuses local
edits to repository keys. Keys that only the target sets stay local. Review
local edits before using --replace.
mise run sync runs format first, so a sync can leave formatting changes in the
working tree. Commit them separately.
Code style
- Python: 3.12+, ruff (88-char lines, double quotes), snake_case, type hints required
- TypeScript: strict mode, camelCase functions, PascalCase types, Zod for validation
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.
- 20d ago Changed · +1 lines · +13 tokens per session 0580d2897c64
- 22d ago Changed · +1 tokens per session 8d0fe4264bbf
- 28d ago Changed · +9 lines · +149 tokens per session 46d1c6b2421b
- 1mo ago Changed · -1 lines · -30 tokens per session 3fd4a1cb9ebd
- 2mo ago First seen · 24 lines · 250 tokens per session scan A d788c15cdfee
agent-kit AGENTS.md is an instructions file published in the GitHub repository vaayne/agent-kit (53 stars, last pushed yesterday), licensed MIT. It adds 383 tokens to every session, about $0.0015 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.
agent-kit AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| agent-kit AGENTS.mdvaayne/agent-kit | Instructions file | 53 | yesterday | MIT | A | 383 | 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 |