Creating API Endpoints
End-to-end REST API endpoint creation with Clean Architecture
GuidesAdvanced• 20 min read
Clean Architecture Endpoint Creation
Follow Clean Architecture principles to create robust, testable API endpoints
8-Step Process
- 1. Define Domain Entity - Core business object with behavior
- 2. Create Repository Interface - Data access contract in Domain
- 3. Implement Repository - EF Core implementation in Infrastructure
- 4. Create DTOs - Request/Response objects in Application
- 5. Define Service Interface - Business operation contract
- 6. Implement Service - Business logic orchestration
- 7. Create Controller - HTTP endpoint in API layer
- 8. Add Tests - Unit and integration tests
Example: Orders API
Complete CRUD operations for order management
Endpoints to Create
- • POST /api/orders - Create order
- • GET /api/orders - List with pagination
- • GET /api/orders/{id} - Get by ID
- • PUT /api/orders/{id} - Update order
- • DELETE /api/orders/{id} - Cancel order
Key Features
- • Authentication required
- • Input validation
- • Error handling
- • Pagination support
- • Domain events