Borrowing it
Nothing to install: this file belongs to BuilderCed/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/BuilderCed/agent-skills/main/CLAUDE.mdgit clone --depth 1 https://github.com/BuilderCed/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/builderced/agent-skills/claude-md)<a href="https://agentmods.dev/instructions/builderced/agent-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/builderced/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/builderced/agent-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/builderced/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 | $0.00264 | $0.00264 |
| Opus 5.5 | $0.00106 | $0.00106 |
| Sonnet 5.5 | $0.00053 | $0.00053 |
| Haiku 4.5 | $0.00026 | $0.00026 |
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 2mo 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
CLAUDE.md — agent-skills
Cross-platform AI agent skills repo. 31 skills across 15 categories.
Structure
- Skills in
skills/{category}/{skill-name}/SKILL.md - References in
skills/{category}/{skill-name}/references/ - Audit script:
bash scripts/audit-all.sh
Conventions
- SKILL.md must have YAML frontmatter (name, description, version, last-updated, platforms, dependencies, update_sources, license)
- Max 3K tokens per skill (SKILL.md + references/)
- Natural language instructions only (no platform-specific tools like Read, Write, Bash)
- Disclaimer required on regulatory/legal/financial skills
- French for FR-only skills, English for global skills
Commands
# Audit all skills
bash scripts/audit-all.sh
# Install a skill locally
npx skills add . --skill eu-ai-act-compliance -a claude-code
Do NOT
- Add platform-specific tool references (Read, Write, Edit, Bash) in SKILL.md core
- Include copyrighted content (AFNOR, proprietary norms)
- Exceed 3K tokens per skill
- Skip disclaimers on regulatory skills
- Reference skills that don't exist in the repo
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.
- 2mo ago First seen · 36 lines · 264 tokens per session scan A 8b38aea6e0ec
agent-skills CLAUDE.md is an instructions file published in the GitHub repository BuilderCed/agent-skills (2 stars, last pushed 6mo ago), licensed MIT. It adds 264 tokens to every session, about $0.0011 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 2026-08-31.
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