A finance lead had Claude Code connect to the QuickBooks API, copy about 60,000 ledger lines into a database daily, flag unmapped accounts, and move a year of wrongly coded transactions in minutes.
Our own prompt for copying this setup. Swap in your details. Not quoted from the source.
Find every transaction in the last 12 months coded to [account] that looks like it belongs in [other account]. List them with your reason. Don't change anything until I approve the list.
A Connecticut venue owner used Claude Code to build 80+ n8n workflows in 28 days: POS sales reports, food cost tracking, staff tools, an event CRM and demand forecasts, with no new monthly software fees.
The owner of a 15-person field service business has an agent write a thank-you and review-link email after every closed job. Reviews went from about 2 to 8-10 a month. It also chases late invoices and sorts the inbox.
With QuickBooks connected, owners describe an invoice in plain words and the assistant creates it, sends it with a payment link, and sends reminders on overdue ones after you confirm.