API Reference Documentation

Create comprehensive API documentation for developer integration.

OpenAPI 3.0 Specification

openapi: 3.0.3 info: title: E-Commerce API version: 1.0.0 description: API for managing products and orders contact: email: api@example.com

servers:

• url: https://api.example.com/v1 description: Production
• url: https://staging-api.example.com/v1 description: Staging

security:

• bearerAuth: []

paths: /products: get: summary: List products tags: [Products] parameters: - name: limit in: query schema: { type: integer, default: 20 } - name: category in: query schema: { type: string } responses: '200': description: Product list content: application/json: schema: $ref: '#/components/schemas/ProductList'

components: securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: JWT

schemas: Product: type: object required: [id, name, price] properties: id: { type: string, format: uuid } name: { type: string, maxLength: 200 } price: { type: number, minimum: 0 } description: { type: string }

Documentation Checklist

• All endpoints documented with examples

• Authentication methods explained

• Error responses specified

• Rate limits documented

• Pagination explained

• Webhooks documented (if applicable)

• SDK examples in multiple languages

Best Practices

• Use OpenAPI 3.0+ specification

• Include request/response examples

• Document all parameters and headers

• Provide authentication examples

• Enable interactive API exploration

• Maintain version documentation

• Include migration guides for breaking changes

Tools

• Swagger Editor / Swagger UI

• Redoc

• Postman Documentation

• Stoplight