Connect Pennyweight to Grok

Grok (xAI) can connect to Pennyweight as a custom MCP connector. Grok added Bring Your Own MCP connectors in 2026, so you can point it at any remote MCP server — including Pennyweight — and talk to your ledger in plain English. Your account binds when you authorize; Grok never sees your bank login or your encryption keys.

Before you start

• Where: add the connector on the web at grok.com. Once it’s on your account, connectors work in Grok on the web and in the iOS and Android apps.
• On a Business or Enterprise team: a team admin has to provision the connector in the xAI console before you can use it.

Add the Pennyweight connector

• Open grok.com/connectors(or Connectors from Grok’s settings).
• Choose New Connector → Custom.
• Name it Pennyweight and paste the server URL: https://mcp.pennyweight.ai.
• Complete the authentication step. Grok sends you to Pennyweight to sign in, complete two-factor, and enter your passphrase — then back to Grok. That handshake is what binds the connector to your account.
• Enable Pennyweight from the tools / connectors menu in a chat, then ask your first question.

Importing statements

If your bank isn’t on Plaid (or you’re outside the US), share a statement (PDF or CSV) in the chat and ask Grok to read it and add the transactions — see importing without a bank link.

Managing access

Remove the connector from Grok’s connectors settings any time. See manage & revoke access. The grant lasts 30 days of active use; Pennyweight never gives Grok your passphrase or keys.