Borrowing it
Nothing to install: this file belongs to rlespinasse/agent-skills. 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/rlespinasse/agent-skills/main/CLAUDE.mdgit clone --depth 1 https://github.com/rlespinasse/agent-skillsWrote 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/rlespinasse/agent-skills/claude-md)<a href="https://agentmods.dev/instructions/rlespinasse/agent-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/rlespinasse/agent-skills/claude-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/rlespinasse/agent-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/rlespinasse/agent-skills/claude-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 | $0.01235 | $0.01235 |
| Opus 5 | $0.00617 | $0.00617 |
| Sonnet 5 | $0.00247 | $0.00247 |
| Haiku 4.5 | $0.00123 | $0.00123 |
Grade A, and why
agent-skills CLAUDE.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 9d 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 — 157 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Claude Instructions for Agent Skills Repository
This repository contains Agent Skills for AI coding assistants.
Project Overview
Purpose: A curated collection of agent skills that help AI assistants effectively use specific tools and ecosystems.
Author: @rlespinasse
Target Audience: AI coding assistants (Claude Code, Cursor, VS Code Copilot, etc.)
Repository Structure
agent-skills/
├── README.md # Main repository documentation (auto-generated skills section)
├── CONTRIBUTING.md # Contributing guidelines
├── LICENSE # MIT License
├── justfile # Development task automation
├── .markdownlint.json # Markdown linting configuration
├── .claude-plugin/
│ └── marketplace.json # Claude Code plugin manifest (auto-generated)
├── docs/
│ └── reference-skill-spec.md # Skill specification reference
└── skills/{skill-name}/ # Individual skill directories
├── SKILL.md # Skill specification and documentation
└── evals/
└── evals.json # Skill test scenarios
Agent Skills Specification
All skills MUST follow the Agent Skills specification. Each skill is a
kebab-case directory with a SKILL.md file containing YAML frontmatter (name and description) and
structured documentation.
See Skill Specification Reference for frontmatter requirements, directory structure, evals schema, and description patterns.
Development Guidelines
Creating New Skills
- Use the justfile:
just new-skill skill-name - Follow naming conventions: Use kebab-case
- Write clear descriptions: The frontmatter
descriptionis crucial for skill activation - Include examples: Show practical usage patterns
- Document edge cases: Help agents make correct decisions
Testing
Before committing:
- Run
just autofix- Formats, syncs generated files, fixes linting, and runs all checks - Manually test skill installation:
npx skills add https://github.com/rlespinasse/agent-skills --skill skill-name
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.
- 9d ago First seen · 157 lines · 1,235 tokens per session scan A c9ad4b263a7f
agent-skills CLAUDE.md is an instructions file published in the GitHub repository rlespinasse/agent-skills (10 stars, last pushed 3d ago), licensed MIT. It adds 1,235 tokens to every session, about $0.0062 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 2026-08-31.
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