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!…