Start using the POS+ API to process payments from your Castles device.
Integration
Integrate with the POS+ API to process payments directly from your Castles device.
Manage POS devices
Activate, configure, and update your device.
Initiate POS transactions
Process an in-person card payment.
Modify POS transactions
Update a previously initiated transaction.
Generate receipts
Learn how to generate compliant transaction receipts.