Borrowing it
Nothing to install: this file belongs to closedloop-ai/claude-plugins. 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/closedloop-ai/claude-plugins/main/CLAUDE.mdgit clone --depth 1 https://github.com/closedloop-ai/claude-pluginsWrote 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/closedloop-ai/claude-plugins/claude-md)<a href="https://agentmods.dev/instructions/closedloop-ai/claude-plugins/claude-md"><img src="https://agentmods.dev/badge/instructions/closedloop-ai/claude-plugins/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/closedloop-ai/claude-plugins/claude-md"><img src="https://agentmods.dev/badge/instructions/closedloop-ai/claude-plugins/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 | $0.02276 | $0.02276 |
| Opus 5.5 | $0.00910 | $0.00910 |
| Sonnet 5.5 | $0.00455 | $0.00455 |
| Haiku 4.5 | $0.00228 | $0.00228 |
Grade A, and why
claude-plugins 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 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.
How it starts
The opening of the file, as written. The whole thing — 117 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
What This Is
A monorepo of open-source Claude Code plugins by ClosedLoop. Eight plugins (bootstrap, closedloop-core, code, code-review, judges, platform, self-learning, vibe), each under plugins/<name>/ with a standard layout: .claude-plugin/plugin.json, agents/, commands/, skills/, hooks/, tools/python/, scripts/.
Commands
# Setup
python3.13 -m venv .venv && source .venv/bin/activate
pip install ruff pyright pytest
git config core.hooksPath .githooks
# Testing
pytest plugins/ # all tests
pytest plugins/code/tools/python/ # single plugin's tests
pytest plugins/code/tools/python/test_count_tokens.py -k test_name # single test
# Linting & type checking (match CI exactly — local-pyright vs uv-run-pyright
# divergence can mask reportOptionalMemberAccess and similar diagnostics)
uv run ruff check .
uv run pyright
# TypeScript tool scripts (toolchain lives at tools/design-inventory; bundles committed into plugin)
cd tools/design-inventory
npm ci # once
npm test # vitest
npm run typecheck # tsc --noEmit
npm run build # rebuild committed dist/*.mjs (written to plugins/code/skills/design-inventory/scripts/dist/)
Architecture
Plugin Structure
Each plugin's manifest lives at plugins/<name>/.claude-plugin/plugin.json with name, description, version, and author fields. The .claude-plugin/marketplace.json at repo root registers all eight plugins.
Agent Definitions
Markdown files with YAML frontmatter specifying name, description, model, tools, and skills. Model selection convention: opus for creative/planning, sonnet for implementation, haiku for lightweight coordination. Only reference tools listed in frontmatter — no hallucinated tool calls.
Skill Identifiers
Always use plugin-name:skill-name format (e.g., self-learning:learning-quality, not learning-quality).
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 Changed · -69 tokens per session 8b1d209401b2
- 9d ago Changed · +29 tokens per session 45ee44991987
- 10d ago Changed · +40 tokens per session ec6b040d894d
- 19d ago Changed · +59 tokens per session afc0d9706203
- 1mo ago First seen · 117 lines · 2,217 tokens per session scan A 93ea61a9c677
claude-plugins CLAUDE.md is an instructions file published in the GitHub repository closedloop-ai/claude-plugins (122 stars, last pushed yesterday), licensed Apache-2.0. It adds 2,276 tokens to every session, about $0.0091 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 2026-08-30.
Other instructions, from other repositories
agentforge-py copilot-instructions.md
Copilot instructions for Scaffoldic/agentforge-py: See AGENTS.md for project conventions. AGENTS.md is the canonical source for AI-assistant instructions. This file exists so GitHub Copilot's native .github/copilot-instructions.md discovery keeps working.
vscode buildNext.instructions.md
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
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, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
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.
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.