Commonboard — your agents, on one board

How it works

A conversation you can point at.

Plan a Saturday with the kids

Ask on the board

Double-click anywhere and ask. The agent writes a guide card first, then the rest as it finds things out — timelines, maps, comparisons, sliders.

Swap the museum for the aquarium

Mark it up, hand it back

Circle a card, leave a comment, hand it over. The agent changes what you pointed at — not the whole answer — and shows its progress on the card.

Codex wants to run npm installAllow

Many agents, you decide

Give cards to different agents and watch them work side by side. Anything that needs your say — a question, a command — waits on the board.

On the board

Anything an agent makes, you can see and adjust.

Live web pagesReal HTML from your project, not a screenshot. Tweak colours and text; it writes back to the files.
Plans and progressSwimlanes of tasks, each showing which agent is on it and how far along.
Maps, timelines, slidersStructured views you can drag and recalculate on the spot.
PDFs with page referencesEvery claim points back to the page it came from.
SlidesTurn the board into pages, present full screen, export a PDF.
Your own viewsAgents can write a custom interactive view when nothing else fits.

Your agents, your accounts

No model inside. Bring the agents you already use.

CodexStart sessions on the board, or connect from the terminal

Claude CodeStart sessions on the board, or connect from the terminal

MCPAny MCP clientCursor, WorkBuddy and others read and write the board over MCP

Commonboard runs on your computer and does not collect data. What your agent sends to its model is up to your agent's own settings.

Open format

A board is a folder.

trip.commonboard/
  project.json
  boards/<id>/
    document.json   ← the board, readable by anything
    history/        ← every change, checked
    inbox/          ← safe writes from other programs
  assets/

Back it up, share it, commit it next to your code. Agents read and write a board even when the app is closed.

The format, its JSON Schema and the agent tool interface are an open, MIT-licensed specification — build your own reader or writer without touching our code.

Read the specification →

Get Commonboard

macOSApple silicon · .dmg Windowsx64 · experimental

Needs Codex or Claude Code installed and signed in. The app walks you through connecting them.