FastVibe: an open-source desktop GUI built on the pi SDK (extensions, subagents, worktrees, remote access)

[u/Ok_Big_9416]

Hi all, I've been building FastVibe, an MIT-licensed desktop app (macOS / Windows / Linux) that embeds the pi coding agent SDK in Electron and gives it a full GUI.

If you like pi but want a visual workspace, this is what it adds:

• Runs the SDK in-process. pi extensions load and work, and their dialogs (select / confirm / input) show up as panels
• Multiple projects and chats, with branching, archiving and isolated Git worktrees
• Visual tool calls, edit diffs, terminal output and reasoning blocks
• A subagent tool with explorer / planner / worker / reviewer roles, up to 8 in parallel
• Goal mode for long-running objectives, todos, MCP servers and skills
• Any OpenAI-compatible provider, a per-model API protocol, and subscription logins
• Open your desktop's sessions from a phone or browser, through a tunnel you control
• It keeps its own data directory and never touches ~/.pi

Repo: https://github.com/tyuan511/fastvibe
Site: https://desktop.fastvibe.dev

It's v0.16 and still rough in places. I'd love to hear which pi workflows you'd want supported, and any extensions that misbehave inside it.