Ask your assistant who owes you money.

Invoicing and bookkeeping for freelancers and studios. Connect Claude, ChatGPT or any MCP assistant and run your books from a conversation.

An invoice in Books Machine, with its PDF preview beside the figures
Your assistant · Northwind Studio

Who owes me money?

Three clients owe you $18,216.75. Oakline is 26 days late.

  • Oakline Architects$6,369.19
  • Juniper Coffee$7,240.19
  • Harborline Media$4,607.37

Send Oakline the invoice again.

Email invoice 20260801-1 to accounts@oakline.test?

Sent.

Holding it.

Works with
  • Claude
  • ChatGPT
  • Grok
  • Muse
  • Hermes
  • OpenClaw
or any assistant that supports MCP

We didn't build an AI. You already have one.

Xero and QuickBooks built their own. We gave yours a key instead, and it asks before anything leaves the building.

  1. How much did we spend on software this year?

    $2,184.60, which is 18% more than last year, and most of it is Adobe.

  2. Bill Harborline for October, same as September.

    Invoice 20261001-1 for $7,607.37 is drafted and ready for you to send.

  3. I forwarded the Printwell receipt.

    It's filed under Printing at $412.50 and matches Tuesday's card payment. Shall I post it?

The invoice is the one part of your books your clients see.

The Plate invoice design
Plate
The Systems invoice design
Systems
The Working file invoice design
Working file

And six more designs in the app.

Save a client's card once. Every invoice after that pays itself.

Charges run through your own Stripe account at Stripe's price.

0%added on top

The payment page Harborline Media sees

Double-entry bookkeeping, minus the entering.

Invoices, payments, bills and receipts post themselves as they happen.

Profit and loss, September 2026

Revenue
24,480.00
Contractors
(3,120.00)
Rent and studio
(3,180.00)
Software
(612.49)
Net profit
17,567.51

Send as many invoices as you like.

It's free while we're invite-only, and no plan will ever charge per invoice or per client.

Free

  • Unlimited invoices and clients
  • One workspace for one person
  • 25 emails a day, with a small Books Machine credit

Pro

  • Unlimited invoices and clients
  • Five workspaces and five people
  • Unlimited email from your own domain

Team

  • Unlimited invoices and clients
  • 25 workspaces and 25 people
  • Unlimited email from your own domain

Every plan includes every feature.

Hand your assistant the books.

Tell us a little about your business and we'll send you an invite.