Northwind
Getting started
Invoices
Payments
Video tutorials
Search or ask a question
⌘K
Contact support
Home
/
Integrations and API
Integrations and API
Connect your accounting, chat and own systems.
4 articles
Updated Sep 27, 2026
Search or ask a question
Ask AI
Integrations
2
Sync with QuickBooks
Keep invoices, payments and customers in step with your books.
1 min read
Updated Sep 8, 2026
Get paid notifications in Slack
A message in a channel whenever an invoice is paid.
1 min read
Updated Sep 27, 2026
Developers
2
API keys
Create invoices and read payments from your own systems.
1 min read
Updated Sep 20, 2026
Webhooks
Get a request to your server when an invoice is paid or goes overdue.
1 min read
Updated Sep 13, 2026