Lefthook
Fast git hooks manager for running checks and tasks on commits.
Dev workflow and config npm MIT
Used in agent projects
128
1.0% of 12,697 public repos built with AI coding agents
Rank in dev workflow and config
#21 of 88
by use in those projects
Downloads
5.5M
npm, last 7 days, lefthook
GitHub stars
8,892
last push Oct 8, 2026
How Lefthook is used
Lefthook is a dependency in 128 of the 12,697 public GitHub projects set up for AI coding agents that we scanned (1.0%), #21 of 88 in dev workflow and config. The most used alternative there is dotenv. Projects that use it most often also use Biome (38.3%), Turborepo (33.6%), jsdom (28.1%). It is more common in projects set up for OpenAI Codex (4.9%) than for GitHub Copilot (1.9%).
Often used with Lefthook
| Biome | 38.3% of Lefthook projects · 10.9× more than average |
|---|---|
| Turborepo | 33.6% of Lefthook projects · 10.7× more than average |
| jsdom | 28.1% of Lefthook projects · 5.2× more than average |
| TypeScript | 68.8% of Lefthook projects |
| Vitest | 30.5% of Lefthook projects · 2.5× more than average |
| oxlint | 18.8% of Lefthook projects · 11.6× more than average |
| markdownlint-cli2 | 18.8% of Lefthook projects · 32.6× more than average |
| Knip | 18.0% of Lefthook projects · 15.2× more than average |
By coding agent
| Claude Code | 2.4% of projects set up for it |
|---|---|
| GitHub Copilot | 1.9% of projects set up for it |
| Cursor | 1.9% of projects set up for it |
| OpenAI Codex | 4.9% of projects set up for it |
| OpenCode | 4.7% of projects set up for it |
| Gemini CLI | 2.5% of projects set up for it |
Share of public repos configured for each agent that list Lefthook as a dependency.
Install
| Package | npm install lefthook |
|---|---|
| Main stacks | TypeScript / JavaScript (78), Python (25), Next.js (19), Rust (3) |
| Example projects | thedaviddias/Front-End-Checklist, handsontable/handsontable, c15t/c15t, deadlock-mod-manager/deadlock-mod-manager, Kaggle/kaggle-environments |
Alternatives to Lefthook
| Tool | Used in agent projects | Downloads / wk | GitHub stars | License |
|---|---|---|---|---|
| dotenv npm Load environment variables from .env files into process.env. |
2,001 (15.8%) | 189M | 20.5K | BSD-2-Clause |
| python-dotenv pypi Load environment variables from .env files in Python applications. |
828 (6.5%) | 156M | 8,898 | BSD-3-Clause |
| Husky npm Modern Git hooks manager for running tasks on git events. |
797 (6.3%) | 36.2M | 35.3K | MIT |
| lint-staged npm Run linters on git staged files to catch issues before commit. |
591 (4.7%) | 29.5M | 14.7K | MIT |
| concurrently npm Run multiple npm scripts concurrently for efficient development workflows. |
572 (4.5%) | 22.2M | 7,856 | MIT |
| cross-env npm Set environment variables across Windows, Mac and Linux in npm scripts. |
265 (2.1%) | 25.8M | 6,521 | MIT |
| Pydantic Settings pypi Settings management and configuration from environment variables using Pydantic. |
251 (2.0%) | 96.8M | 1,475 | — |
| Rich pypi Python library for rich text and beautiful formatting in terminal output. |
243 (1.9%) | 117M | 57.5K | MIT |