Welcome to the Developer Portal

Default UI Integration
- Integrating Default UI
- Migrating from PayButton to Default UI
- Managing Default UI Properties
- Summary Screen
- Incremental Authorization
- Custom Receipt Printing
- Automatic Receipt Printing
- Standalone Receipt Printing
- Sending Receipts via Email
- Customization
- Mobile UI Customization
- Release Notes

PayButton Integration
- Integration
- Summary Screen
- On-Reader Tipping
- Loyalty and Bonus Cards
- Pre-Auth and Capture
- Refunds
- Custom Receipts
- Testing
- Going Live
- Release Notes

Windows Integration
- Configure, Run, and Test PayServer
- .NET POS Integration via PayClient
  - Refunds
  - Custom Receipts
  - Preformatted Receipts
  - On-Reader Tipping
  - Pre-Auth and Capture
- POS Integration via PayProtocol
  - Usage and Message Flows
  - Message Specification
  - Refunds
  - Custom Receipts
  - Preformatted Receipts
- Testing
- Going Live
- Release Notes

Custom Integration
- Installation
- Integration
- Signature
- Refunds
- Email & Print Receipts
- Custom Receipts
- Custom Receipts for PAX Terminals
- Preformatted Receipts
- On-Reader Tipping
- Loyalty & Bonus Cards
- Pre-Auth & Capture
- Connection Keep-Alive
- Testing
- Going Live

Backend Integration
- API Endpoints and Authentication
- WebHooks
- Query Transactions
- Refunds
- Custom Receipts
- Going Live
- API Documentation

Merchant Setup
- AMEX Merchant Setup
- Elavon Merchant Setup
- Nexi Merchant Setup

Developer Kits

After integrating payments into your point-of sale (POS) system using the Mock mode, it is time to see payments in action with a real card reader.

When you order a developer kit, you will receive the test card reader of your choice, connectivity and power supply cables, and one test card. You can also order additional test cards.

Available test card reader models include:

Verifone e355

Verifone VX820

Miura M010

PAX A920

Test card readers can only be used in Test Mode. To go live, order live card readers.