Swagger Generator

Generate OpenAPI 3.0 specs from endpoint descriptions. Use when validating APIs, generating docs, formatting YAML, checking schemas, linting contracts.

Generate complete OpenAPI 3.0/Swagger specification documents from endpoint descriptions. Supports RESTful API documentation with path definitions, request/response schemas, authentication schemes (Bearer JWT, API Key, OAuth2), error responses, pagination, filtering, and example values. Outputs valid YAML or JSON specs that can be rendered by Swagger UI, Redoc, or imported into Postman. Includes model generation, tag grouping, and server configuration.

Commands

Command	Description
spec	Generate a complete OpenAPI spec from API description
endpoint	Generate a single endpoint definition
model	Generate a schema/model definition
crud	Generate CRUD endpoints for a resource
auth	Generate authentication scheme definitions
error	Generate standardized error response schemas
server	Generate server configuration (dev/staging/prod)
tag	Generate tag definitions for API grouping
merge	Merge multiple endpoint definitions into one spec

Usage

# Generate complete API spec
swagger-generator spec --title "My API" --version "1.0.0" --description "REST API for my app"

# Generate CRUD endpoints for a resource
swagger-generator crud --resource User --fields "id:integer,name:string,email:string"

# Generate single endpoint
swagger-generator endpoint --method POST --path "/users" --body "name:string,email:string" --response "User"

# Generate model/schema
swagger-generator model --name Product --fields "id:integer,name:string,price:number,category:string"

# Add authentication
swagger-generator auth --scheme bearer --format jwt

# Generate error responses
swagger-generator error --codes "400,401,403,404,422,500"

# Server configuration
swagger-generator server --envs "dev,staging,production" --base-url "api.example.com"

Examples

E-commerce API

swagger-generator spec --title "E-commerce API" --resources "products,orders,users,categories"

Blog API

swagger-generator crud --resource Post --fields "id:integer,title:string,body:string,author_id:integer,status:string"

Microservice API

swagger-generator spec --title "Payment Service" --auth bearer --resources "payments,refunds,webhooks"

Features

• OpenAPI 3.0 — Generates valid OpenAPI 3.0.3 specifications
• CRUD generation — Complete REST endpoints for any resource
• Authentication — Bearer JWT, API Key, OAuth2 schemes
• Models — JSON Schema-based model definitions
• Error handling — Standardized error response patterns
• Pagination — Cursor and offset pagination parameters
• Examples — Request/response example values
• Tags — Logical API endpoint grouping

Keywords

swagger, openapi, api documentation, rest api, api spec, api design, documentation, endpoints, schema, backend

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