Use Tofu in Claude or ChatGPT

You need a Tofu account; you sign in to it on Tofu's own page while connecting. If Claude or ChatGPT offers Tofu in its own directory of connectors, adding it from there connects to this same address.

Claude Desktop and the phone apps use the connectors on your Claude account: once Tofu is added and connected, it is there in Claude Desktop and in the Claude apps for iPhone and Android too. Add it on the web or in Claude Desktop — the link above leaves the dialog empty on iPhone, and the phone apps may have no screen for adding a connector.

If ChatGPT offers Tofu in its own directory, add it from there instead: it is the same connection to the same address, and needs no Developer mode.

Sign in to Tofu there if you are not signed in already, then read the page from the top:

• A warning first: approve only a connection you started yourself.
• Who is asking: for Claude or ChatGPT, the address their sign-in details are published at, such as claude.ai or chatgpt.com. A name an app only gave itself is shown in quotes and marked unconfirmed.
• Where the sign-in returns after you approve.
• What the connection can do, in short and then in the exact terms — including reading your account's id and email address, which a chat uses to tell your accounts apart — and what it cannot.
• Signed in as: the Tofu account the connection will act for. Not you? Sign out lets you sign in as another account and brings you back to this same request.
• Approve this connection, or Deny.

Approve stays grey for a moment after the page appears, so a stray double-click cannot press it. Every connection asks; nothing is remembered from one to the next.

A few to start with:

• “List my Tofu apps.”
• “What is the status of Frank’s Kitchen? Then list its versions.”
• “Show the build log of Frank’s Kitchen’s latest version.”
• “Is Frank’s Kitchen up? Show its recent uptime checks.”
• “Which keys and settings does Frank’s Kitchen have? Names only.”

Putting what the chat writes online

Ask the chat to make a page or a small app and put it on Tofu. It writes the files into the call — up to 50 files, 512 KB in all and 128 KB per file, with binary files such as images sharing 256 KB — and Tofu checks, builds and publishes them like any other upload. A chat that hands attachments over as links, as ChatGPT does, can also send one attached file: a single page, or a ZIP of the whole app, up to 10 MB.

An update replaces the whole app. Files sent for an app that already exists become all of its code, so a file the chat does not send is not in the new version. Update from chat only when the chat holds the app's complete code; earlier versions stay, and the chat can roll back to one.

A deploy answers within about a minute. If the build is still running, the answer says so: ask “Is it live yet?” rather than deploying again. A private file — a .env, a key file — is refused rather than uploaded.

What it asks first

Anything that deletes, or creates something that costs money, asks you in the chat first, and the chat sends your agreement only for the exact app you named. Approving the connection is not that agreement. The full list is on Connect your agent.

Disconnect. Every connection is listed on the dashboard's Coding agent page (the account menu, or app.trytofu.ai/dashboard/agent) under the app that asked. Disconnect ends one at once: Tofu refuses that chat's next call, and the chat asks you to connect again. Disconnect all ends every connection, coding agents on your computer included. Removing Tofu inside Claude or ChatGPT stops that chat using it; disconnecting on the Coding agent page is how you know the connection itself has ended.

Every 30 days, connect again. A connection lasts 30 days from the moment you approve it, however often it is used. In between, Claude and ChatGPT keep it fresh themselves, so you are not asked again (a phone app may ask sooner: connect and approve). After 30 days the next Tofu call asks you to connect: select Connect (or Reconnect) on Tofu in the app's connector settings, and approve on Tofu's page again. Your apps, their settings and their history are untouched; only the connection is new. In the ChatGPT desktop app, if no way to reconnect is offered, reconnect on chatgpt.com in a browser.

While connecting

Tofu's page says “This sign-in request expired or was started in another browser. Start the connection again from the app.”

A sign-in waits 10 minutes, in the browser the app opened. Start the connection again from Claude or ChatGPT and finish it in the page it opens.

Tofu's page says “Too many sign-in requests right now. Try again in a minute.”

Wait a minute, then connect again.

Tofu's page says “Tofu could not use this app’s sign-in details. Start the connection again from the app.”

Start again from the app. If it keeps happening, email hello@trytofu.ai with the app you connected from and the time you tried.

On a phone, Approve stays grey

Some phone sign-in sheets need a touch first: the page says “Tap the page to enable Approve.” Tap anywhere on it, and Approve turns on a moment later.

“Signed in as” names the wrong account

Select Not you? Sign out, sign in as the right account, and the same request comes back.

Claude will not add another custom connector

On Claude's free plan, one custom connector at a time: remove another first. On a Team or Enterprise plan, an Owner of your organization may need to add it.

The claude.ai link opens an empty dialog

That happens on iPhone: type the name Tofu and the address, or add it from a computer's browser.

ChatGPT has no Developer mode

It is on the web, and not every ChatGPT plan offers it. A coding agent on your computer reaches the same Tofu account instead (Connect your agent).

In a chat

The chat says Tofu is not connected, or asks you to connect again

The connection ended: 30 days passed, or it was disconnected. Connect again and approve; nothing in your account changed.

“Too many Tofu calls this minute. Try again shortly.”

Each account has an allowance of calls a minute. Wait a minute; the chat can then try the same call again.

“This account is not admitted to Tofu yet, so this call changed nothing.”

Reading your apps still works. The dashboard shows how to get access.

A deploy answer says the build is queued or building

The build is still running: ask the chat to check its status rather than deploy again.

An upload is refused for its size

Send fewer or smaller files, or in ChatGPT attach a ZIP of the app (up to 10 MB). A bigger app goes up through a GitHub import in the dashboard, or a coding agent on your computer.