Borrowing it
Nothing to install: this file belongs to mauribadnights/clooks. 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/mauribadnights/clooks/main/CLAUDE.mdgit clone --depth 1 https://github.com/mauribadnights/clooksWrote 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/mauribadnights/clooks/claude-md)<a href="https://agentmods.dev/instructions/mauribadnights/clooks/claude-md"><img src="https://agentmods.dev/badge/instructions/mauribadnights/clooks/claude-md.svg" alt="Measured on agentmods" 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 | $0.00929 | $0.00929 |
| Opus 5 | $0.00464 | $0.00464 |
| Sonnet 5 | $0.00186 | $0.00186 |
| Haiku 4.5 | $0.00093 | $0.00093 |
Grade A, and why
clooks CLAUDE.md scanned grade A with 1 finding 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 6d 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.
Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
Tests mirror `src/` — one test file per module in `tests/`. Tests use vitest. Most tests mock the filesystem and child_process to avoid touching `~/.clooks/` or `~/.claude/`. When writing tests, use dependency injection How it starts
The opening of the file, as written. The whole thing — 46 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 is clooks
Persistent HTTP daemon that replaces Claude Code's per-invocation process spawning for hooks. Claude Code POSTs hook events to 127.0.0.1:7890, which dispatches to handlers defined in ~/.clooks/manifest.yaml. Three handler types: script (subprocess), inline (in-process JS import), llm (Anthropic API call with prompt templates and batching).
Commands
npm run build # tsc → dist/
npm test # vitest run (all tests)
npm run test:watch # vitest watch mode
npx vitest run tests/filter.test.ts # single test file
npx tsc --noEmit # type-check only
npm run bench # performance benchmarks (npx tsx benchmarks/bench.ts)
Architecture
The daemon is a plain Node.js HTTP server (no frameworks). Request flow:
- cli.ts — Commander-based CLI, entry point (
bin: clooks). Handles start/stop/status/migrate/doctor/plugins/service commands. - server.ts — HTTP server creation, hook routing (
POST /hooks/:eventName), auth, session agent caching, deny cache short-circuiting, manifest hot-reload via file watcher. - handlers.ts — Execution engine. Resolves dependency order into waves (via
deps.ts), runs each wave in parallel. Separates async (fire-and-forget) from sync handlers. Auto-disables handlers after 3 consecutive failures. Resolves the user's login shell PATH at startup so script handlers work under launchd/systemd. - llm.ts — LLM handler execution with two backends:
api(Anthropic SDK, supports batching and cost tracking) andclaude-code(spawnsclaude -p, supports--agent). API handlers sharing abatchGroupare combined into a single API call. Cost tracking writes to~/.clooks/costs.jsonl(API backend only). - manifest.ts — Loads and validates
manifest.yaml.loadCompositeManifest()merges user manifest with plugin-contributed handlers. - plugin.ts — Plugin install/remove/list. Plugins are directories with
clooks-plugin.yaml. Handler IDs are namespaced (pluginName/handlerId). - migrate.ts — Converts existing
settings.jsoncommand hooks into HTTP hooks pointing at the daemon. Creates backup. - service.ts — Platform-native service management (launchd on macOS, systemd on Linux).
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.
- 6d ago First seen · 46 lines · 929 tokens per session scan A 6082b575dc0b
clooks CLAUDE.md is an instructions file published in the GitHub repository mauribadnights/clooks (2 stars, last pushed 5mo ago), licensed MIT. It adds 929 tokens to every session, about $0.0046 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other instructions, from other repositories
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).
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
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.
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.