Local-first by design
Projects, conversations, files, and agent work stay on your computer. You choose the model provider and the permissions.
Desktop AI Agent
Work locally.
Build with AI.
Captain Who is a local-first desktop AI agent built with Rust and Electron. It helps you work across code, files, browsers, tools, and multi-agent workflows with configurable permissions.
Built for real work
Read and edit files, run approved commands, search the web, use browsers, connect MCP servers, and create artifacts.
Context that holds up
Stable instructions, task history, skills, and changing state are assembled in a deliberate order for long-running work.