Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/johnlindquist/claude-hooks/claude-mdgit clone --depth 1 https://github.com/johnlindquist/claude-hooksWrote 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/johnlindquist/claude-hooks/claude-md)<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="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 | $0.01258 | $0.01258 |
| Opus 5 | $0.00629 | $0.00629 |
| Sonnet 5 | $0.00252 | $0.00252 |
| Haiku 4.5 | $0.00126 | $0.00126 |
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 5d 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 — 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 JavaScriptbun run lint- Run Biome linterbun run lint:fix- Run Biome linter with auto-fixbun run format- Format code with Biome
Testing
bun test- Run all testsbun run test:unit- Run unit tests onlybun run test:integration- Run integration testsbun run test:smoke- Run smoke testsbun run test:coverage- Run tests with coverage report
Clean Up
bun run clean- Remove all build artifacts and test outputsbun 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 maininitcommand 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 executionPostToolUse- React to tool execution resultsNotification- Handle Claude notificationsStop- 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
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.
- 5d ago First seen · 136 lines · 1,258 tokens per session scan A 3e7c2752df4a
claude-hooks CLAUDE.md is an instructions file published in the GitHub repository johnlindquist/claude-hooks (389 stars, last pushed 1y ago), licensed MIT. It adds 1,258 tokens to every session, about $0.0063 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.
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).
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.
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).
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.