Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/pi0/skillman/agents-mdgit clone --depth 1 https://github.com/pi0/skillmanWhat 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 | $0.01378 | $0.01378 |
| Opus 5 | $0.00689 | $0.00689 |
| Sonnet 5 | $0.00276 | $0.00276 |
| Haiku 4.5 | $0.00138 | $0.00138 |
Grade A, and why
skillman 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 2d 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 — 148 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Project Overview
skillman is a CLI wrapper to manage project skills and lock them in skills.json. It provides a declarative way to install skills per project, similar to how package managers work with package.json.
Architecture
src/
├── cli.ts # CLI entry point with parseArgs
├── config.ts # skills.json config management
├── skills.ts # Skills CLI execution
└── utils/
├── colors.ts # ANSI color codes for terminal output
└── gitignore.ts # .gitignore file management
test/index.test.ts # Tests using vitest
Config (src/config.ts)
findSkillsConfig(cwd?)— Findsskills.jsonby traversing up from cwdreadSkillsConfig(options?)— Reads and validatesskills.json(options:{ cwd?, createIfNotExists? })updateSkillsConfig(updater, options?)— Generic update with callback (options:{ cwd?, createIfNotExists? }, defaultscreateIfNotExists: true)addSkill(source, skills?, options?)— Adds a skill source (options:{ cwd?, createIfNotExists? }, defaultscreateIfNotExists: true)- Auto-injects
$schemafield during validation if missing
Skills CLI (src/skills.ts)
findSkillsBinary(options?)— Finds localskillsbinary in node_modules/.bin (options:{ cache? }, cached by default)installSkills(options?)— Spawnsskills addfor each source with progress logging; options:{ cwd?, agents?, global?, yes? }installSkillSource(entry, options)— Installs a single skill source; options:{ cwd?, agents?, global?, yes?, prefix? }
CLI Entry (src/cli.ts)
main(argv?)— CLI entry point using Node.jsparseArgsparseSource(input)— Parses source input into{ source, skills }; supports:- Colon/comma format:
owner/repo:skill1,skill2orowner/repo:skill1:skill2 - skills.sh URLs:
https://skills.sh/owner/repo/skill-name
- Colon/comma format:
Utils (src/utils/)
colors.ts — ANSI escape codes for terminal styling:
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.
- 2d ago First seen · 148 lines · 1,378 tokens per session scan A 12c7a6e2786f
skillman AGENTS.md is an instructions file published in the GitHub repository pi0/skillman (190 stars, last pushed 4mo ago), licensed MIT. It adds 1,378 tokens to every session, about $0.0069 per session on Opus 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
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
buildNext
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
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, applying the notice (cutover) and fallback chain (never fail the build).
spec-kit AGENTS.md
Instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
langchain 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.