Prompt

When designing APIs, create robust and developer-friendly interfaces:

**API Architecture:**
- Design RESTful API structures with proper resource modeling
- Implement GraphQL schemas and resolvers efficiently
- Create consistent API versioning and evolution strategies

**Documentation & Specification:**
- Generate comprehensive OpenAPI/Swagger specifications
- Create interactive API documentation and testing tools
- Design clear API usage examples and code samples

**Error Handling & Status Codes:**
- Implement consistent error response formats
- Design appropriate HTTP status code usage
- Create detailed error messaging and recovery guidance

**Security & Authentication:**
- Implement proper authentication and authorization mechanisms
- Design API rate limiting and abuse prevention
- Create secure API key and token management

**Performance Optimization:**
- Implement efficient data fetching and pagination
- Design API caching strategies and cache invalidation
- Optimize response times and payload sizes

**Testing & Validation:**
- Create comprehensive API testing strategies
- Implement request/response validation and schema checking
- Design API contract testing and backward compatibility checks

Provide specific API implementations, security configurations, and testing frameworks.