CLI toolFreeIntermediate

Repomix

Name: Repomix
Author: Kazuki Yamada

Packs a whole code project into one file you can hand to an AI chat assistant

View original on GitHub

By Kazuki Yamada · MIT license · Updated Oct 25, 2026

A packed Repomix output file attached to an AI chat, with a request to review the code before refactoring — Image: Kazuki Yamada (MIT). Original file

An AI chat answering a request to add tests, using the code from a packed Repomix file — Image: Kazuki Yamada (MIT). Original file

What it does

Repomix is a command-line tool that combines every file in a code project into a single file shaped for AI assistants. You run one command in a project folder, or give it a GitHub link; it skips ignored files, leaves out files that look like credentials and shows a token count. You then upload the file to Claude, ChatGPT or another assistant and ask about the code. It suits anyone who wants an AI to read a whole codebase at once.

One command turns a whole repository into one AI-ready file, and the same packing also works on the official website without installing anything.

Before you start

A computer with macOS, Windows, Linux or a web browser.
Node.js on your computer for the command-line version
An AI chat assistant, such as Claude or ChatGPT, to send the packed file to
Free. Nothing to pay.

How to start

Install itPaste the install request into an AI agent you already use, or run the official command yourself or follow the official guide.macOS, Windows, Linuxnpm install -g repomix
Install command
Your browser blocked copying. Select the text and copy it yourself.
npm install -g repomix
This is the official install command, copied from the creator's instructions. Paste it where the instructions say.
macOS, Linuxbrew install repomix
Install command
Your browser blocked copying. Select the text and copy it yourself.
brew install repomix
This is the official install command, copied from the creator's instructions. Paste it where the instructions say.
Set it upFollow the first-run steps in the official guide.
Give it a first taskDescribe what you want in your own words, and check the first result before relying on it.