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/antfu/skills/agents-mdgit clone --depth 1 https://github.com/antfu/skillsWhat 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 | $0.01919 | $0.01919 |
| Opus 5 | $0.00959 | $0.00959 |
| Sonnet 5 | $0.00384 | $0.00384 |
| Haiku 4.5 | $0.00192 | $0.00192 |
Grade A, and why
skills 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 3d 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:
- skills AGENTS.md — 91% identical, 41 lines differ
- skills AGENTS.md — 88% identical, 21 lines differ
How it starts
The opening of the file, as written. The whole thing — 254 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Skills Generator
Generate Agent Skills from project documentation.
PLEASE STRICTLY FOLLOW THE BEST PRACTICES FOR SKILL: https://platform.claude.com/docs/en/agents-and-tools/agent-skills/best-practices
- Focus on agents capabilities and practical usage patterns.
- Ignore user-facing guides, introductions, get-started, install guides, etc.
- Ignore content that LLM agents already confident about in their training data.
- Make the skill as concise as possible, avoid creating too many references.
Skill Source Types
There are two types of skill sources. The project lists are defined in meta.ts:
Type 1: Generated Skills (sources/)
For OSS projects without existing skills. We clone the repo as a submodule and generate skills from their documentation.
- Projects: Vue, Nuxt, Vite, UnoCSS
- Workflow: Read docs → Understand → Generate skills
- Source:
sources/{project}/docs/
Type 2: Synced Skills (vendor/)
For projects that already maintain their own skills. We clone their repo as a submodule and sync specified skills to ours.
- Projects: Slidev, VueUse
- Workflow: Pull updates → Copy specified skills (with optional renaming)
- Source:
vendor/{project}/skills/{skill-name}/ - Config: Each vendor specifies which skills to sync and their output names in
meta.ts
Type 3: Hand-written Skills
For skills that are written by Anthony Fu with his preferences, experience, tastes and best practices.
You don't need to do anything about them unless being asked.
Repository Structure
.
├── meta.ts # Project metadata (repos & URLs)
├── instructions/ # Instructions for generating skills
│ └── {project}.md # Instructions for generating skills for {project}
│
├── sources/ # Type 1: OSS repos (generate from docs)
│ └── {project}/
│ └── docs/ # Read documentation from here
│
├── vendor/ # Type 2: Projects with existing skills (sync only)
│ └── {project}/
│ └── skills/
│ └── {skill-name}/ # Individual skills to sync
│
└── skills/ # Output directory (generated or synced)
└── {output-name}/
├── SKILL.md # Index of all skills
├── GENERATION.md # Tracking metadata (for generated skills)
├── SYNC.md # Tracking metadata (for synced skills)
└── references/
└── *.md # Individual skill files
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.
- 3d ago First seen · 254 lines · 1,919 tokens per session scan A 874b156c9a0f
skills AGENTS.md is an instructions file published in the GitHub repository antfu/skills (5,826 stars, last pushed 2mo ago), licensed MIT. It adds 1,919 tokens to every session, about $0.0096 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
cortex-mem AGENTS.md
Instructions for sopaco/cortex-mem, covering cortex memory - ai agent context guide, project overview, core concepts, memory dimensions and three-tier layers.
ai-toolkit AGENTS.md
Instructions for pipefy/ai-toolkit, covering repository guidelines, documentation map, project structure, import namespace migration: pipefysdk → pipefy and src/pipefysdk/init.py (transitional shim).
superpowers-reasonix AGENTS.md
Instructions for christopherarter/superpowers-reasonix, covering project guidance, skills — stop. load a skill before you act, red flags — these thoughts mean stop. you are rationalizing and priority.
ai-mind AGENTS.md
Instructions for HWYD/ai-mind, covering agents, version spec workspace continuity (mandatory), 项目定位, 事实来源优先级 and 开始大改前先读什么.
agent-skills AGENTS.md
Instructions for sayeed1999/agent-skills, covering agents.md, output style, output style, 1. think before code and 2. simplicity.
webflow-skills AGENTS.md
Instructions for 224-Industries/webflow-skills, covering 224 industries - webflow agent skills repository, agents.md (symlink to claude.md), repo structure, reference file conventions and content style.