A desktop app for Claude Code, built on OpenCode.

Claudius is a fork of OpenCode Desktop rebuilt around the Claude Agent SDK.

• Works out of the box - No configuration required if already using Claude Code. Just download and start coding.
• Deep Claude integration - Built on the Claude Agent SDK for native prompt caching, extended thinking, and sandboxed execution.
• Planning mode - Switch between full-access build mode and read-only planning mode.
• Permission modes - Granular control over what the agent can do.
• Native tools - Read, Edit, Write, Bash, Glob, Grep, and more - all handled natively.

Interested in contributing? See CONTRIBUTING.md for guidelines.

For technical context on the architecture:

• UPSTREAM.md - OpenCode upstream documentation

_{Built with the Claude Agent SDK}