What you get
One API onreceipts.opencard.io:
- Discover which merchants have digital receipts (
GET /publishers) - Submit card transactions for matching (
POST /callbackrequests) - Receive matched receipts on your callback URL
How it works
Get started
- Contact support@opencard.io for JWT credentials and callback setup
- Read the integration guide → Digital Receipts
- API reference → Digital Receipts API

