What is claude-hooks CLAUDE.md?

Project instructions for claude-hooks, a TypeScript command-line tool that creates hook systems for Claude Code. They document development commands, tests, cleanup, architecture, and restrictions on Git usage.

Use them when developing claude-hooks, including building, linting, formatting, running unit or integration tests, cleaning generated files, and understanding its command structure.

They give contributors the project-specific commands and boundaries needed to build, test, and maintain the tool correctly.

How johnlindquist/claude-hooks configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to johnlindquist/claude-hooks. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/johnlindquist/claude-hooks/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/johnlindquist/claude-hooks

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/johnlindquist/claude-hooks/claude-md/github.svg)](https://agentmods.dev/instructions/johnlindquist/claude-hooks/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/johnlindquist/claude-hooks/claude-md"><img src="https://agentmods.dev/badge/instructions/johnlindquist/claude-hooks/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/johnlindquist/claude-hooks/claude-md"><img src="https://agentmods.dev/badge/instructions/johnlindquist/claude-hooks/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,258 This file is loaded in full into every session.

When invoked 1,258 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.01258	$0.01258
Opus 5.5	$0.00503	$0.00503
Sonnet 5.5	$0.00252	$0.00252
Haiku 4.5	$0.00126	$0.00126

Measured 2mo ago against content hash 3e7c2752df4a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

claude-hooks 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.

CLAUDE.md · 136 lines

How it starts

The opening of the file, as written. The whole thing — 136 lines — stays where its author put it; the contents beside it link to each section on GitHub.

DO NOT install or use the git cli with the environment_run_cmd tool. All environment tools will handle git operations for you. Changing ".git" yourself will compromise the integrity of your environment.

You MUST inform the user how to view your work using container-use log <env_id> AND container-use checkout <env_id>. Failure to do this will make your work inaccessible to others.

Commands

Building and Development

bun run build - Compile TypeScript to JavaScript
bun run lint - Run Biome linter
bun run lint:fix - Run Biome linter with auto-fix
bun run format - Format code with Biome

Testing

bun test - Run all tests
bun run test:unit - Run unit tests only
bun run test:integration - Run integration tests
bun run test:smoke - Run smoke tests
bun run test:coverage - Run tests with coverage report

Clean Up

bun run clean - Remove all build artifacts and test outputs
bun run clean:test - Remove only test output directories

Architecture

This is an oclif-based CLI tool written in TypeScript that generates a hook system for Claude Code.

Key Components

Command Structure: Commands live in src/commands/. Currently, there's only the main init command that sets up the hook system.
Template System: Hook templates are stored in templates/ and copied to the user's .claude/ directory when initialized.
Hook Types: The system supports four hook types:
- PreToolUse - Intercept tool usage before execution
- PostToolUse - React to tool execution results
- Notification - Handle Claude notifications
- Stop - Handle session stop events

Generated Structure: Running the CLI creates:

.claude/
├── settings.json      # Hook configuration
└── hooks/
    ├── index.ts       # Main hook handlers (user edits this)
    ├── lib.ts         # Type definitions and utilities
    └── session.ts     # Session tracking utilities

Read the full file on GitHub · 136 lines

Changes

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 · 136 lines · 1,258 tokens per session scan A 3e7c2752df4a

Subscribe to this mod's changes

claude-hooks CLAUDE.md is an instructions file published in the GitHub repository johnlindquist/claude-hooks (397 stars, last pushed 1y ago), licensed MIT. It adds 1,258 tokens to every session, about $0.0050 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.

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claude-hooks: Instructions file for Claude Code