API Designer Implementation

Design and implement API endpoints for new features.

Implementation Checklist

Endpoint Design

• Define RESTful resource paths and HTTP methods
• Verify consistent naming conventions across endpoints
• Check for proper use of query parameters vs path parameters
• Ensure idempotency for PUT/DELETE operations
• Validate rate limiting and throttling configuration

Request/Response Schema

• Define clear request body schemas with required/optional fields
• Ensure response envelopes follow project conventions
• Verify pagination structure for collection endpoints
• Check for consistent date/time formats and data types
• Validate content negotiation headers

Error Handling

• Define standard error response format with error codes
• Ensure proper HTTP status code usage (4xx vs 5xx)
• Verify descriptive error messages without leaking internals
• Check for consistent error handling across all endpoints
• Validate retry-safe error classifications

Versioning & Compatibility

• Verify API versioning strategy is applied
• Check backward compatibility with existing clients
• Ensure deprecation notices for changed endpoints
• Validate migration path for breaking changes
• Check integration contract tests with consumers

Output Format

Report implementation status:

Status	Description
Complete	Fully implemented and verified
Partial	Implementation started, needs remaining work
Blocked	Cannot proceed due to dependency or decision needed
Skipped	Not applicable to this feature