ChatGPT, Claude, Grok, and Muse

Connect Weasel Den to your AI.

Pick your assistant. ChatGPT and Claude add Weasel Den with one tap from their directories. Muse connects when you tell it to. Grok takes a custom connector in its settings. Either way you sign in once with your Den account, then just ask.

Pick your assistant

Four assistants. One Den account.

Every path ends the same way: you sign in with your Den account and Receipt Weasel shows up in your chats. Weasel Estates works inside its own organizer.

ChatGPT
One tap
One tap from the Weasel Den plugin page, then sign in with your Den account.
Connect to ChatGPT
Full steps
Claude
One tap
One tap from the Claude connector directory, then sign in with your Den account.
Connect to Claude
Full steps
Grok
Custom connector
Add Weasel Den as a custom connector in Grok’s settings, then sign in with your Den account.
See the Grok steps
Muse
Ask it
Give Muse the Weasel Den address and sign in when it asks. Do it on a computer.
Tested 2026-09-30
Full steps

Step by step

Every assistant, start to finish.

What you need, the steps in order, what sign-in looks like, how to check it worked, and what to ask once it does.

ChatGPT

One tapFounder-verified 2026-09-29

Connect to ChatGPT

Before you start

A ChatGPT account, signed in in the browser you are using.
A Den account, or a minute to create one during sign-in. The trial starts on first use, with no card up front.

Connect, in order

Open the Weasel Den plugin page in ChatGPT.
Choose Connect. ChatGPT sends you to Weasel Den to sign in.
Sign in or create your Den account, then approve the access. You land back in ChatGPT.
Start a new chat with Weasel Den turned on and ask it something.

What sign-in looks like

ChatGPT opens the Weasel Den sign-in page. You sign in with your Den account, the same one Receipt Weasel uses, approve what Weasel Den may do for you, and return to ChatGPT. Weasel Den never sees your ChatGPT password, and ChatGPT never sees your Den password.

Then try asking

Tap one to copy it, then paste it into your assistant.

Check it worked

Ask this once you are signed in. It only reads. It never uploads a receipt or starts tracking.

What success looks like

Weasel Den answers with the receipts saved to your Den account, as a card or as text.

No receipts yet? Then it says so. An empty list still proves the connection and the sign-in worked, because that answer came from your account.

You can also ask what is in Weasel Den. That lists the den apps and your membership state, and reads nothing else.

If something is off

The plugin page opens, but there is nothing to connect.

Sign-in never finishes, or ends on an error.

Finish the sign-in in the tab ChatGPT opened, without closing it. If it fails again, disconnect Weasel Den in ChatGPT and connect once more from the plugin page.

Weasel Den says you are not signed in when you ask.

Connections are per account. Reconnect from the plugin page, complete the sign-in step, then ask again in a new chat.

Still stuck? Email hello@weaselden.ai with the assistant name and what you saw.

Claude

One tapFounder-verified 2026-09-10

Connect to Claude

Before you start

A personal Claude account, signed in on claude.ai. On a work account, an administrator may control which connectors can be added.
A Den account, or a minute to create one during sign-in. The trial starts on first use, with no card up front.

Connect, in order

Open the Weasel Den listing in the Claude connector directory.
Choose Connect. Claude sends you to Weasel Den to sign in.
Sign in or create your Den account, then approve the access. You land back in Claude.
In a new chat, make sure Weasel Den is turned on in the tools menu, then ask.

What sign-in looks like

Claude opens the Weasel Den sign-in page. You sign in with your Den account, the same one Receipt Weasel uses, approve what Weasel Den may do for you, and return to Claude. Weasel Den never sees your Claude password, and Claude never sees your Den password.

Then try asking

Tap one to copy it, then paste it into your assistant.

Check it worked

Ask this once you are signed in. It only reads. It never uploads a receipt or starts tracking.

What success looks like

Weasel Den answers with the receipts saved to your Den account, as a card or as text.

No receipts yet? Then it says so. An empty list still proves the connection and the sign-in worked, because that answer came from your account.

You can also ask what is in Weasel Den. That lists the den apps and your membership state, and reads nothing else.

If something is off

The listing shows no Connect button.

Weasel Den is connected, but Claude does not use it.

Open the tools menu in the chat and turn Weasel Den on for that conversation, then ask again.

Weasel Den says you are not signed in.

In Claude’s connector settings, disconnect Weasel Den, then connect again from the directory listing and complete the sign-in step.

Still stuck? Email hello@weaselden.ai with the assistant name and what you saw.

Grok

Custom connectorFounder-verified 2026-09-11

Before you start

Grok on grok.com, signed in on a computer.
A Den account, or a minute to create one during sign-in. The trial starts on first use, with no card up front.

Connect, in order

On grok.com, open Connectors and choose New connector, then Custom.
Paste the Weasel Den address: https://mcp.weaselden.ai/mcp. There is no API key or client id to enter.
Sign in with your Den account when Grok sends you to Weasel Den, then approve the access.
Back in Grok, start a chat with the Weasel Den connector enabled and ask it something.

What sign-in looks like

Grok sends you to the Weasel Den sign-in page. You sign in with your Den account and approve the access. Grok discovers the sign-in on its own from the connector address, so nothing else needs to be typed.

Then try asking

Tap one to copy it, then paste it into your assistant.

Check it worked

Ask this once you are signed in. It only reads. It never uploads a receipt or starts tracking.

What success looks like

Weasel Den answers with the receipts saved to your Den account, as a card or as text.

No receipts yet? Then it says so. An empty list still proves the connection and the sign-in worked, because that answer came from your account.

You can also ask what is in Weasel Den. That lists the den apps and your membership state, and reads nothing else.

If something is off

Grok asks for an API key or a client id.

Leave them blank. Weasel Den uses sign-in with your Den account, discovered automatically from the address.

Sign-in does not come back to Grok.

Complete the sign-in in the tab Grok opened, on a computer rather than a phone. If Grok still shows the connector as disconnected, remove it and add it again.

Still stuck? Email hello@weaselden.ai with the assistant name and what you saw.

Muse

Ask itFounder-verified 2026-09-30

Setup prompt

Paste this into a new chat. It tells the assistant where Weasel Den is and how to sign you in.

Connect Weasel Den as an MCP server: https://mcp.weaselden.ai/mcp, Streamable HTTP. Register yourself with its authorization server automatically (it supports dynamic client registration and PKCE; there is no API key or client id), then open the sign-in so I can log in with my Den account. If you need me to paste back the address I land on after sign-in, tell me. When you are connected, show me my saved receipts.

Tested 2026-09-30

Before you start

Muse on a computer, not a phone. The sign-in asks you to paste an address back.
A Den account, or a minute to create one during sign-in. The trial starts on first use, with no card up front.

The connector path, if you would rather add it by hand

Where Muse accepts an MCP server, add the Weasel Den address: https://mcp.weaselden.ai/mcp. Muse can also find it on its own from weaselden.ai/llms.txt.
Sign in with your Den account when Muse opens the Weasel Den sign-in page, then approve the access.
When Muse asks, paste the address of the page you landed on after sign-in back into Muse. That completes the connection.
Ask Muse something Receipt Weasel can do.

What sign-in looks like

Muse registers itself with Weasel Den automatically and opens the sign-in page. After you sign in and approve, Muse needs the address you landed on pasted back to finish. No API key or client id is involved.

Then try asking

Tap one to copy it, then paste it into your assistant.

Check it worked

Ask this once you are signed in. It only reads. It never uploads a receipt or starts tracking.

What success looks like

Weasel Den answers with the receipts saved to your Den account, as a card or as text.

No receipts yet? Then it says so. An empty list still proves the connection and the sign-in worked, because that answer came from your account.

You can also ask what is in Weasel Den. That lists the den apps and your membership state, and reads nothing else.

If something is off

Muse never asks for the address, or the sign-in stalls.

Use a computer. Copy the full address of the page you land on after signing in and paste it into Muse when it asks.

Muse cannot find the server.

Give it the exact address https://mcp.weaselden.ai/mcp, not the website address.

Still stuck? Email hello@weaselden.ai with the assistant name and what you saw.

Using Weasel Estates? Its Den AI assistant works inside the organizer. AI use is included with Den; the organizer is sold separately. See what’s included.

Security model

Permission, not impersonation.

Every connection to the den is bound to a specific person, with permissions that person explicitly granted. Tools act with delegated, time-bound, revocable authority. Never as you, always for you.

Every tool call through the gateway is logged: which tool ran, how long it took, and whether it succeeded, tied to a one-way hash instead of your identity. Disconnect the den any time and it stops acting for you.

Delegated access

The den acts only with the access you granted at sign-in, never as you.

Card details never touch the den

Our payment processor handles payment details end to end. We never store card numbers.

Pseudonymous logging

Every tool call is logged against a one-way hash, not your name.

One-switch revocation

Disconnect the den in your assistant’s settings and access ends at once.

For AI agents and developers

Instructions for AI agents.

The same guide as plain Markdown: the endpoint, how sign-in is discovered, the steps for every assistant, and the read-only check. Point your agent at it, or read it yourself.

Instructions for AI agents (Markdown)llms.txt

Check it worked: “Show me my saved receipts.” (list_receipts). No receipts yet? Then it says so. An empty list still proves the connection and the sign-in worked, because that answer came from your account.

Connection details for MCP clients

weaselden-connection.json

{
  "endpoint": "https://mcp.weaselden.ai/mcp",
  "transport": "streamable-http",
  "authorization": {
    "resourceMetadata": "https://mcp.weaselden.ai/.well-known/oauth-protected-resource",
    "authorizationServer": "https://mcp.weaselden.ai",
    "dynamicClientRegistration": "https://mcp.weaselden.ai/oauth/register",
    "pkce": "S256"
  },
  "guide": "https://www.weaselden.ai/agents/guide.md"
}

The connector speaks Streamable HTTP and uses OAuth discovered automatically. An unauthenticated request is answered with a pointer to the sign-in metadata, the authorization server supports automatic client registration and PKCE, and no API key or client id is issued. These are endpoint details for MCP clients, not a desktop configuration file.

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Use it in ChatGPT, Claude, Grok, or Muse, or open Receipt Weasel on its own.

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