Borrowing it
Nothing to install: this file belongs to kairyou/agent-tools. 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/kairyou/agent-tools/main/AGENTS.mdgit clone --depth 1 https://github.com/kairyou/agent-toolsWrote 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/kairyou/agent-tools/agents-md)<a href="https://agentmods.dev/instructions/kairyou/agent-tools/agents-md"><img src="https://agentmods.dev/badge/instructions/kairyou/agent-tools/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/kairyou/agent-tools/agents-md"><img src="https://agentmods.dev/badge/instructions/kairyou/agent-tools/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 | $0.00564 | $0.00564 |
| Opus 5.5 | $0.00226 | $0.00226 |
| Sonnet 5.5 | $0.00113 | $0.00113 |
| Haiku 4.5 | $0.00056 | $0.00056 |
Grade A, and why
agent-tools 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 1mo 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 — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent instructions
Conventions this repo has settled on. They live here because they cannot be inferred from the code, and getting them wrong costs a round of rework.
Build and test
Tests exercise the bundles in dist/, so run npm run build before npm test
after touching anything under capabilities/.
Layout
- Self-contained capabilities that work when copied by a Skill installer live
in
skills/. They may bundlescripts/,references/, andassets/in the same Skill directory. - Skills centered on a specific external or business system live in
skills/systems/. - Capabilities that require independent installation, hooks, shared runtimes,
generated bundles, or Agent configuration live in
capabilities/<capability>/, with per-agent adapters named<agent>-<form>.mjs. - Every executable installed into
~/.agent-toolsby the capability installer comes fromdist/; sources stay incapabilities/. Bundled scripts inside a self-contained Skill are installed with that Skill instead. - Capability-owned Skill templates that contain unrendered
{{TOKENS}}live incapabilities/<capability>/skills/and must not ship throughnpx skills add.config.default.jsoncremains the installer-merged exception from the repo root.
Settled decisions
- No migration or legacy-compat code. Breaking a layout is fine: bump a minor version and state the one-time manual cleanup in the summary.
- Add no new env knobs for timing: a value that follows from the caller's shape
belongs in a module constant, with a comment explaining that number. The
overrides already in
codex-hook.mjsandclaude-statusline.mjspredate this and stay unless a change removes them deliberately. - Never claim compatibility that has not been verified against a real gateway.
- Usage output lines carry no branding prefix; each display surface adds its own context.
Docs
- Never use CJK/fullwidth punctuation. Write
,.:;()even in Chinese text. In- term — descriptionlines the separator is—, not-. README.md,README.zh-CN.md, and bothdocs/trees change together.- Prefer deleting a sentence over explaining it. Say what the reader must do, not how it works inside.
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.
- 1mo ago First seen · 54 lines · 564 tokens per session scan A 9c2fd0e3008f
agent-tools AGENTS.md is an instructions file published in the GitHub repository kairyou/agent-tools (181 stars, last pushed today), licensed MIT. It adds 564 tokens to every session, about $0.0023 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.
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.