Whiteboard is an open-source desktop app where humans and agents can architect software together in a common workspace.

Whiteboard plugs into the tools you already use - e.g. Claude Code, Codex, etc. – and gives your agent an SDK to draw on an in-app canvas to describe its work.

Here’s a 1 min demo video explaining more: https://www.youtube.com/watch?v=ChPn3ftULWE

Quickstart

Download Whiteboard and open the app.

Connect Claude Code, Codex, or another coding agent from the welcome screen.

Ask your agent to review your current branch against up-to-date main and open the result in Whiteboard.

Guidance

In our experience, Whiteboard works best with models like GPT-6 Sol and Claude Opus 5.5 for their intelligence, cost, and speed tradeoff.

Here are a few example prompts of how to use Whiteboard effectively. We are working hard to make sure the right choices are baked in by default to the system prompt - part of why this system is open source!…