Repomix is an open-source utility that packages an entire codebase into compact, AI-friendly output. It gathers repository files, applies configurable filtering and formatting, and produces a representation that can be supplied to language models for code review, analysis, documentation, refactoring, or other repository-level tasks.

The tool is designed around the practical problem that AI assistants often need broad project context but cannot conveniently consume a directory tree directly. Repomix turns that tree into structured text formats while providing controls for ignored files, token-aware output, security checks, and different ways of using the packaged result.

Repomix is useful with chat models, coding agents, and research workflows that need a snapshot of a repository without integrating a dedicated indexing system. It offers a simple bridge between local source code and model context and can be used through command-line and online workflows.