Drawgent connects coding agents to an Excalidraw canvas
The open-source tool lets Claude Code, Codex or opencode read and draw on a live whiteboard, and it reached the Hacker News front page with real traction.
Developer yann.degat released Drawgent, an open-source tool that connects a user's own Claude Code, Codex or opencode installation to a live Excalidraw whiteboard, according to its repository. The Hacker News post drew 101 points and 32 comments within about eight hours.
The tool runs as a single Rust binary that serves an Excalidraw editor alongside a chat panel, the README says. Agents get tools to read the canvas, take a screenshot and add elements through the Model Context Protocol. A user can direct edits by writing "AGENT:" notes on the drawing itself.
Commenters on Hacker News were skeptical that agent-drawn diagrams add much value. One noted that Excalidraw already ships its own open-source MCP server, though another replied it "hasn't been touched in six months." Others questioned whether the value of diagramming lies in the picture or in the thinking behind it.
Drawgent supports excalidraw.com rooms with end-to-end encryption and can run headless through Docker, the repository says. Its commit history lists Claude Opus 5.5 as a co-author alongside yann.degat. The project runs entirely against a user's own local agent accounts rather than a hosted service.