Borrowing it
Nothing to install: this file belongs to mhattingpete/claude-skills-marketplace. 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/mhattingpete/claude-skills-marketplace/main/CLAUDE.mdgit clone --depth 1 https://github.com/mhattingpete/claude-skills-marketplaceWrote 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/mhattingpete/claude-skills-marketplace/claude-md)<a href="https://agentmods.dev/instructions/mhattingpete/claude-skills-marketplace/claude-md"><img src="https://agentmods.dev/badge/instructions/mhattingpete/claude-skills-marketplace/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80ร15 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/mhattingpete/claude-skills-marketplace/claude-md"><img src="https://agentmods.dev/badge/instructions/mhattingpete/claude-skills-marketplace/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 | $0.04792 | $0.04792 |
| Opus 5 | $0.02396 | $0.02396 |
| Sonnet 5 | $0.00958 | $0.00958 |
| Haiku 4.5 | $0.00479 | $0.00479 |
Grade A, and why
claude-skills-marketplace CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories โ prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency โ measured 13d 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 โ 799 lines โ stays where its author put it; the contents beside it link to each section on GitHub.
Claude Code Instructions for Skills Marketplace Development
Repository: claude-skills-marketplace Purpose: Development guidelines for creating high-quality Claude Code skills and plugins
๐ฏ Repository Context
This is the Claude Skills Marketplace - a collection of reusable skills and plugins for Claude Code. When working in this repository, you are helping develop skills that will be used by many developers.
Current Plugins
-
engineering-workflow-skills (v1.1.0)
- feature-planning, test-fixing, git-pushing, review-implementing
- plan-implementer agent
-
visual-documentation-skills (v1.0.0)
- visual-html-creator for stunning HTML documentation
-
productivity-skills (v1.0.0)
- conversation-analyzer, code-auditor, project-bootstrapper, codebase-documenter
๐๏ธ Plugin Structure Standards
Required Directory Structure
{plugin-name}-plugin/
โโโ .claude-plugin/
โ โโโ plugin.json # REQUIRED: Plugin metadata ONLY (no skills array)
โโโ skills/ # Skills directory (auto-discovered)
โ โโโ {skill-name}/
โ โโโ SKILL.md # REQUIRED: Skill specification
โ โโโ references/ # OPTIONAL: Reference materials (markdown)
โ โ โโโ *.md # Additional context/guides
โ โโโ scripts/ # OPTIONAL: Helper scripts
โ โโโ *.py # Python scripts, shell scripts, etc.
โโโ agents/ # OPTIONAL: Agents directory (auto-discovered)
โ โโโ {agent-name}/
โ โโโ AGENT.md # Agent specification
โโโ commands/ # OPTIONAL: Commands directory (auto-discovered)
โ โโโ {command-name}.md
โโโ README.md # REQUIRED: Plugin documentation
โโโ CHANGELOG.md # RECOMMENDED: Version history
โโโ EXAMPLES.md # RECOMMENDED: Usage examples
CRITICAL: Skills are auto-discovered!
- Skills MUST be in
skills/subdirectory at plugin root - Skills are automatically discovered - NO listing in plugin.json
- plugin.json contains ONLY metadata (name, version, description, author)
- Same applies to agents/ and commands/ - all auto-discovered
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.
- 13d ago First seen ยท 799 lines ยท 4,792 tokens per session scan A 05c2345f69fc
claude-skills-marketplace CLAUDE.md is an instructions file published in the GitHub repository mhattingpete/claude-skills-marketplace (671 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 4,792 tokens to every session, about $0.0240 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.
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