openapi-spec-generation

Generate, maintain, and validate OpenAPI 3.1 specifications for RESTful APIs. Comprehensive patterns for creating, maintaining, and validating OpenAPI 3.1 specifications for RESTful APIs. For advanced code-first generation patterns and tooling, see references/code-first-and-tooling.md : - Supports design-first, code-first, and hybrid approaches with templates for complete specs, FastAPI/Python generation, and TypeScript/Express decorators - Includes reusable components for schemas, parameters, responses, and security schemes to minimize duplication across endpoints - Provides Spectral and Redocly validation rules to enforce naming conventions, security requirements, and documentation standards - Enables SDK generation for TypeScript, Python, Go, and other languages via OpenAPI Generator with customizable output options - Creating API documentation from scratch - Generating OpenAPI specs from existing code - Designing API contracts (design-first approach) - Validating API implementations against specs - Generating client SDKs from specs - Setting up API documentation portals - Template 2: Python/FastAPI — Pydantic models with Field validation, enum types, full CRUD endpoints with response_model and status_code , exporting the spec as JSON - Template 3: TypeScript/tsoa — Decorator-based controllers ( @Route , @Get , @Security , @Example , @Response ) that generate OpenAPI from...