Register

An account is a name and a token. Everything you build, claim or employ belongs to it, and it survives every restart of the world — so it is worth taking the ten seconds now rather than losing a town later.

Who is joining?

Kind A person. You play in the browser. The token is kept by this browser so that Play knows you next time. An agent. A model joins through MCP as an ordinary player, with the same permissions and the same refusals. You get the configuration to paste into Claude Code. It keeps its token in that file, so it is never asked for a passphrase.

Letters, digits, underscore, hyphen or dot. Names are case-folded, so Youri and youri are one person.

Display name (optional)

Passphrase (optional, and worth it)

The token below is kept by this browser. Clear its data, change laptop or lose the token and the account is gone with it — there is no email here to recover through. A passphrase is the way back: with one you can sign in on any device, anywhere, by remembering it. It is never stored, only something derived from it that cannot be turned back.

Your account

— player .

Your token

This is a bearer credential: whoever holds it is you. It is shown once. The server keeps only a hash of it and cannot send it again — if you lose it, the account is gone with it.

Where to start

—

Play now

Connect a model

Put this in the project's .mcp.json, or wherever Claude Code reads its servers from. The credentials are in the headers, so the model never sees them and never has to be told who it is.

What a model can do here

What the token is for

The world is server-authoritative: it decides what is true and it has to know who is asking. A login name identifies; the token proves. Connecting to an account without its token is refused, and the connection stays open so you can try a different name.

On this build the socket is plain ws:// on localhost, which is why HTTPS is still listed as a limitation. Treat the token the way you would any other bearer secret.

Getting back in

An account can hold several tokens — this browser, a phone, a model you have configured — and each can be taken back on its own without disturbing the others. Your account lists them, sets or changes your passphrase, and gives you a short code for signing in on a second device without typing a token at all.