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Hiroshi is a desktop cockpit for multi-agent development. The whole interface is painted on the GPU through GPUIX, the React reconciler over Zed’s native GPUI engine. There is no Electron, no web view and no DOM: the transcript, the composer and the window chrome are one GPU surface.

Get started

Install Bun, run the cockpit, and learn the commands.

Architecture

How the cockpit is put together and where each part lives.

The window

The custom titlebar: dragging it, maximizing it, restoring it.

Development

The integration suite, the CI, and the automation API.

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What is in the cockpit

  • The transcript and the composer, with the model, the reasoning level, the access mode and the build mode inline.
  • The conversation sidebar, grouped by time, with the project, the search and the new task action.
  • The thread header, with run phase and turn count from the engine.
  • The right panel, with a browser, a terminal, a file browser and a review surface.
  • The environment menu, with the commit and push flow and the branch comparison.
  • The command palette, on the search action, with the conversations, the usage and the workspace actions.
  • A settings view with six sections: general, appearance, providers, skills, usage and daemon.

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The window is ours

Hiroshi never shows a native OS titlebar. The chrome spans the whole window and the titlebar drags it, which means the app moves the window itself. The window guide explains how that works and why the OS modal move loop is not an option.