Show HN: Uji – Gentoo of Coding Agents

Uji is a lightweight coding-agent harness built around the idea that every part of the tool should be replaceable and customizable. Its “Gentoo” comparison signals that users can start with a small setup, add only the capabilities they want, and reshape the system rather than accept a fixed agent experience. Modules can be switched at runtime - including the core - and the interface is not off-limits: every view is written in Lua and can be rewritten. The project combines Rust and Lua, and presents extensibility and speed as central design goals.

The available description shows Uji answering a web question, editing a Go file and displaying a diff, listing available models, and changing themes. It does not detail the agent’s full feature set or provide performance comparisons, so its main proposition is the customizable framework rather than a particular benchmark or workflow. Users can install it through a shell script, Homebrew, or Fedora’s COPR repository, and documentation is available on the project site. Uji is distributed under the GPL version 3 or later, allowing users to modify and redistribute it under the license’s terms.