Borrowing it
Nothing to install: this file belongs to blackblue-labs/skill2. 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/blackblue-labs/skill2/main/AGENTS.mdgit clone --depth 1 https://github.com/blackblue-labs/skill2Wrote 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/blackblue-labs/skill2/agents-md)<a href="https://agentmods.dev/instructions/blackblue-labs/skill2/agents-md"><img src="https://agentmods.dev/badge/instructions/blackblue-labs/skill2/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/blackblue-labs/skill2/agents-md"><img src="https://agentmods.dev/badge/instructions/blackblue-labs/skill2/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 | $0.00348 | $0.00348 |
| Opus 5.5 | $0.00139 | $0.00139 |
| Sonnet 5.5 | $0.00070 | $0.00070 |
| Haiku 4.5 | $0.00035 | $0.00035 |
Grade A, and why
skill2 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.
What it actually says
AGENTS.md
Product
Skill2 = Superpowers-style Skill Library。五个 Skills 管理其他 Skill Library。Skills 是产品；Python CLI 是确定性脚手架。
Invariants
skills/<name>/SKILL.md单一行为来源。description写触发，不写流程摘要。- Agent 判断；CLI 做 scan/test/package/usage/report。
- Usage 本地；不输出 prompt、transcript、绝对路径。
- Suggest/Visualize 只读。
- Package 默认 native；artifact/release 按需。
- Package 执行远端动作前列出目标与写入；用户明确要求该动作即授权。
- Skill2 必须符合自己教的规则。
Verify
PYTHONPATH=src uv run python -m unittest discover -s tests
uv run ruff check .
uv run skill2 lint skills
uv run skill2 package-check .
真实测试：
skill2 test skills/<name> --cases cases/<name>.yaml --trials 1 --baseline
skill2 test skills/skill2-create --cases cases/skill2-routing.yaml --pack --trials 1
长跑必须用 checkpoint/resume/early-stop。不要重跑已完成 trial。
Fixtures
- 真实 dogfood：
~/workspace/my-agent-config/skills - Test fixtures：
tests/fixtures/ - 运行证据：
.skill2/；不提交。
Release
先 package-check、publish-check、clean install。tag、push、GitHub Release、PyPI upload 前再次获取用户确认。
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 · 45 lines · 348 tokens per session scan A a12dca6c32d9
skill2 AGENTS.md is an instructions file published in the GitHub repository blackblue-labs/skill2 (33 stars, last pushed 2mo ago), licensed MIT. It adds 348 tokens to every session, about $0.0014 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).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.