Git Hooks (Lefthook)

Git Hooks (Lefthook) is an agent for Claude Code from marclove/typeforge. It costs 31 tokens per session (111 once invoked), scanned A, original, no licence file.

A Git hook configuration and maintenance tool built around Lefthook. Git hooks are automatic checks that run during actions such as creating a commit.

In plain words
What is it for?
Use it to configure Lefthook hooks for formatting, linting, tests, and generated commit messages. It also maintains those hook settings over time.
Why use it?
It keeps formatting, linting, tests, and commit-message generation connected to the relevant Git actions. This reduces the chance of committing code that fails those checks.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to configure Lefthook hooks for formatting, linting, tests, and generated commit messages. It also maintains those hook settings over time.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/marclove/typeforge/hooks
Install

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.

Clone the repo
git clone --depth 1 https://github.com/marclove/typeforge

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.

agentmods badge for Git Hooks (Lefthook)

README.md
[![agentmods](https://agentmods.dev/badge/agents/marclove/typeforge/hooks/github.svg)](https://agentmods.dev/agents/marclove/typeforge/hooks)
Your own site
<a href="https://agentmods.dev/agents/marclove/typeforge/hooks"><img src="https://agentmods.dev/badge/agents/marclove/typeforge/hooks/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.

agentmods 80×15 button for Git Hooks (Lefthook)

Your own site · 80×15
<a href="https://agentmods.dev/agents/marclove/typeforge/hooks"><img src="https://agentmods.dev/badge/agents/marclove/typeforge/hooks.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 31 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 111 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00031 $0.00111
Opus 5.5 $0.00012 $0.00044
Sonnet 5.5 $0.00006 $0.00022
Haiku 4.5 $0.00003 $0.00011

Measured 1mo ago against content hash c7330f9ac8eb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Git Hooks (Lefthook) 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 1mo 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/agents/hooks.md · 13 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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.

  1. 1mo ago First seen · 13 lines · 31 tokens per session scan A c7330f9ac8eb

Subscribe to this mod's changes

Git Hooks (Lefthook) is an agent published in the GitHub repository marclove/typeforge (17 stars, last pushed 10mo ago), with no licence file. It adds 31 tokens to every session and 111 once invoked, about $0.0001 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 2026-09-01.