Repomix

Free

Pack your codebase into AI-friendly formats. [#opensource](https://github.com/yamadashy/repomix)

FreeFree tier

Type

Open Source

Visit Website GitHub (40 stars)

About Repomix

Repomix is a powerful, open-source command-line tool that packages an entire codebase into a single AI-friendly file (XML, Markdown, or Plain). It is designed to provide complete repository context to AI assistants like ChatGPT, Claude, Gemini, and Grok without requiring subscription-specific integrations. Key capabilities include AI-optimized formatting, automatic .gitignore awareness, built-in security checks via Secretlint, token counting per file and for the whole repository, and options to compress code using Tree-sitter, remove comments, and remove empty lines. Repomix can be used instantly via npx, or installed globally via npm, yarn, bun, or Homebrew. It enables use cases such as code review, refactoring, bug investigation, third-party library security analysis, and documentation generation.

Key Features

AI-optimized output formats (XML, Markdown, Plain) for easy LLM consumption

Git-aware – automatically respects .gitignore files

Security-focused – integrates Secretlint to detect sensitive information

Token counting for each file and the entire repository

CLI tool usable instantly with npx or installable via npm, yarn, bun, Homebrew

Compress code using Tree-sitter to extract essential signatures and reduce tokens

Options to remove comments and empty lines from output

Include/exclude files using glob patterns

Add file summary, directory structure, and line numbers to output

Pros & Cons

Pros

Open source and completely free
Works with any LLM service (ChatGPT, Claude, Gemini, Grok, etc.) without extra cost
Respects .gitignore, reducing noise and token usage
Built-in security scanning prevents accidental inclusion of secrets
Provides token counts, helpful for staying within LLM context limits
Supports multiple output formats and extensive customization options
Can be used without installation via npx

Cons

Command-line only, no graphical interface
Output file can become very large for big repositories
Requires some familiarity with terminal and glob patterns for advanced usage

Best For

Code review and refactoring with AI assistantsBug investigation and root cause analysis with full codebase contextThird-party library security checks by packaging dependencies for AI scanningAutomated documentation generation from codebase structureImplementation planning and architecture analysis with LLMsGetting comprehensive AI assistance without file-by-file exploration

FAQ

What output formats does Repomix support?

Repomix supports XML, Markdown, and Plain text output formats.

How can I get started using Repomix?

You can try Repomix instantly in any project directory by running 'npx repomix@latest'. Alternatively, install it globally via npm, yarn, bun, or Homebrew, then run 'repomix' in your project directory.

Does Repomix work with private repositories?

Yes, because Repomix uses your locally installed git, it can access any repository you have access to locally, including private ones.