REST and GraphQL API design patterns. Covers HTTP methods, status codes, versioning, pagination, error handling, schema design, mutations, and API best practices. Trigger: When designing APIs, when creating REST endpoints, when implementing GraphQL schemas, when handling API versioning, when designing pagination.
HTTP handler, module, middleware, and routing patterns. Use when implementing endpoints, modules, middleware, routes, or HTTP responses. Includes module pattern for mountable sub-applications and path normalization at router level. Triggers: http.Handler, http.HandlerFunc, Handler struct, Routes() method, routes.Group, routes.Route, module.Module, module.Router, middleware stack, RespondJSON, RespondError, CORS, SSE, text/event-stream, MapHTTPStatus, long-running processes, lifecycle context, client disconnect, path normalization. File patterns: internal/*/handler.go, pkg/module/*.go, pkg/middleware/*.go, pkg/routes/*.go
RESTful API 설계, Request/Response DTO, @Valid 검증. MockMvc 금지, TestRestTemplate 필수. /kb-rest-api 명령 시 자동 활성화.
Use when FastAPI async patterns for building high-performance APIs. Use when handling concurrent requests and async operations.
Use this skill when backend API contracts change and frontend types need synchronization. Triggers on: Pydantic model changes, REST endpoint updates, WebSocket message formats, or GraphQL schema modifications. Dynamically detects contract type from context. NOT for unrelated type definitions or internal backend-only changes.
Rails controllers and Pundit policies - RESTful design, authorization, response handling. Use when working with controllers or policies.
WHEN: FastAPI project review, Pydantic models, async endpoints, dependency injection WHAT: Pydantic validation + Dependency injection + Async patterns + OpenAPI docs + Security WHEN NOT: Django → django-reviewer, Flask → flask-reviewer, General Python → python-reviewer
Guide for adding WebSocket API endpoints to Spine. Covers JSON-RPC 2.0 patterns, domain handler registration, request/response types, error handling, and session context.
Skill for creating and editing Spatie Laravel Data classes following Prowi conventions. Use when working with Data classes, DTOs, or data transfer objects. Enforces proper constructor-based properties, annotation-based validation, and Collection usage.
Add or modify CRUD entities following the layered architecture pattern. Use when adding new database models, creating API endpoints, or implementing data access layers.
Express middleware patterns including authentication, validation, error handling, rate limiting, request logging, CORS, compression. Use when implementing auth middleware, input validation, error handlers, rate limiting, request/response logging, or security middleware.
Provides a comprehensive, reusable skill for standardized API error handling in FastAPI. Includes custom exception classes, global exception handlers, structured JSON logging, and standardized Pydantic error schemas. Use this when you need to implement a robust error handling system in a FastAPI project.
Contract-First API Design, Zod Schemas, and Runtime Safety
Design and implement RESTful API endpoints following REST principles with resource-based URLs, appropriate HTTP methods, and consistent naming conventions. Use this skill when creating or modifying API route handlers, endpoint definitions, or REST controllers in files like routes.py, api.ts, controllers/, handlers/, or when implementing HTTP methods (GET, POST, PUT, PATCH, DELETE). Also applies when working on API versioning, request/response validation, status code handling, rate limiting, or any backend endpoint logic that serves HTTP requests to frontend clients or external systems.
Create types.ts files with Zod schemas for Output SDK workflows. Use when defining input/output schemas, creating type definitions, or fixing schema-related errors.
Implement runtime validation and type safety using Zod schemas for Content Collections, API inputs, form data, and environment variables. Use this skill when validating user input, API requests, content schemas, or ensuring data integrity. When working on Content Collections schema definitions in src/content/config.ts, API route input validation with Zod, form validation (server-side and client-side), environment variable validation, component prop validation with runtime checks, URL and query parameter validation, request body and form data sanitization, TypeScript runtime type validation, or custom Zod refinements and transformations.
일관된 에러 처리와 로깅 패턴을 구현합니다. API 에러 응답, 예외 처리, 에러 바운더리, 사용자 친화적 메시지 작성 시 사용하세요. 서버와 클라이언트 양쪽의 에러 처리 전략을 포함합니다.
Data serialization and transformation patterns. Use when formatting API responses.
Review Vendure GraphQL resolvers for missing RequestContext, improper permissions, DTO violations, and schema extension issues. Use when reviewing GraphQL PRs or auditing API quality.
