Types of APIs
REST APIs
Most common type; uses HTTP methods (GET, POST, PUT, DELETE) with JSON data format. Stateless, scalable, and widely supported.
Use case: Standard loyalty operations—member lookup, points balance, offer retrieval
GraphQL APIs
Query language that lets clients request exactly the data they need. Reduces over-fetching and under-fetching common with REST.
Use case: Complex UIs needing flexible data; mobile apps with bandwidth constraints
Webhook APIs
Push-based: the system sends data to your endpoint when events occur, rather than you polling for changes.
Use case: Real-time notifications—new enrollment, points earned, reward redeemed
Real-time APIs (WebSocket)
Persistent connections for bidirectional communication. Enables instant updates without repeated requests.
Use case: Live dashboards, instant balance updates, real-time gamification
API Documentation
Quality API documentation (often in OpenAPI/Swagger format) is essential for developer adoption. Look for platforms with comprehensive, up-to-date API docs and sandbox environments for testing.
Common Loyalty API Functions
Member Management
- Create/update member profiles
- Lookup member by ID, phone, email, or card number
- Retrieve member status, tier, and preferences
- Manage household linkages
Points & Currency
- Get current points balance
- Award points (with transaction details)
- Deduct points for redemptions
- View points history and expiration
Offers & Personalization
- Retrieve available offers for a member
- Activate/clip offers
- Apply offers to transactions
- Get personalized recommendations
Transaction Processing
- Submit transaction for loyalty calculation
- Calculate points and offers in real-time
- Process returns and adjustments
- View transaction history
Rewards & Redemption
- Get available rewards catalog
- Process reward redemptions
- Issue and track gift cards
- Manage reward inventory
API Integration Best Practices
- 1. Use authentication properly. Implement OAuth 2.0 or API keys with proper secret management. Never expose credentials in client-side code.
- 2. Handle errors gracefully. Implement retry logic for transient failures, circuit breakers for persistent issues, and meaningful error messages for debugging.
- 3. Respect rate limits. Loyalty APIs often have rate limits. Implement caching, batch requests where possible, and backoff strategies when limits are approached.
- 4. Version your integrations. Use API versioning (v1, v2) and monitor deprecation notices. Plan for API evolution without breaking existing functionality.
- 5. Log and monitor. Track API calls, response times, and error rates. Monitoring helps identify issues before they impact customers.
- 6. Test in sandbox first. Use sandbox/staging environments for development and testing before connecting to production loyalty data.
Exchange Solutions API Platform
Exchange Solutions provides a comprehensive, API-first loyalty platform built on MACH principles. Our REST APIs enable seamless integration with POS systems, e-commerce platforms, mobile apps, and enterprise systems—supporting true composable loyalty architecture.
