API Reference Documentation

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

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