Privacy

How Merboard handles your data.

Guest mode (no account)

You can start a board instantly with no sign-up. The board is saved on our server so it survives refreshes and so AI agents can edit it over MCP.
Guest boards are anonymous and ownerless. Access is by link: anyone who has the board’s link can open it, and an edit link lets them change it. Treat board links like passwords.
We store a random guest name and a board token in your browser’s local storage so you return to the same board. We don’t collect your email or identity.
When you sign out, we clear this guest state from your browser so the next person using this device starts fresh.

Boards you create or claim are owned by your account and private by default. Only you (and people you explicitly share with) can access them.
We store your account details (name, email) to authenticate you and to show who is collaborating.
If you sign in while working on a guest board and choose “keep”, that board is claimed into your account and becomes private to you.

Live collaboration shares your cursor, your name, and your current selection with others on the same board while you are connected.
Connecting a coding agent (e.g. Claude Code) over MCP lets that agent read and edit the board you grant it. A board-scoped link grants access to only that board; an account-wide connection can reach all your boards.

This is a product prototype; this page summarizes current behavior and may change.