Connect Claude to your Busy Accounting data

If you use Busy Accounting and Claude, you can ask Claude questions about your accounting data directly — outstanding bills, sales trends, product performance — without opening a report or writing a query.

This guide walks through connecting the two.

Before you start

You'll need:

• An active AccMCP subscription with your Busy company data already syncing
• A Claude account that supports custom connectors

Step 1: Add a custom connector

Open Claude's settings and add a custom connector. Claude can discover AccMCP automatically through client identity metadata, or you can register it manually if your Claude client supports dynamic client registration.

Step 2: Approve the connection

Claude will show a consent screen with the verified AccMCP client name. Review the requested access and approve it. Your AccMCP token is never pasted into the conversation — the whole exchange happens through OAuth 2.1.

Step 3: Ask your first question

Once connected, try something like:

Which customers have bills overdue by more than 30 days?

Claude will call the right tool behind the scenes — in this case, the customer outstanding lookup — and return a real, current answer scoped to your company and financial year.

What Claude can and can't do

Every tool Claude uses through AccMCP is read-only, with two exceptions: the sales and purchase register export tools, which create private, downloadable CSV files. Nothing Claude does ever writes back to Busy.

If you ask for something the data can't support — like an exact gross profit figure without the cost data to back it up — AccMCP's profitability-readiness check stops Claude from guessing, and tells you exactly what's missing instead.

Next steps

• Browse the full list of MCP tools Claude can use
• Read more about how the connection works end to end
• See the Claude integration reference for setup details