API Documentation Generator (OpenAPI/Swagger)

Generate comprehensive API documentation for [API NAME].

**API Details:**
- Base URL: [URL]
- Authentication: [TYPE]
- Version: [VERSION]

**For Each Endpoint:**

```yaml
/api/endpoint:
  method:
    summary: Brief description
    description: Detailed explanation
    parameters:
      - name: param
        in: query/path/header
        required: true/false
        schema:
          type: string/number/etc
        description: Parameter purpose
    requestBody:
      content:
        application/json:
          schema:
            type: object
            properties:
              field: type
    responses:
      '200':
        description: Success response
        content:
          application/json:
            example:
              {data}
      '400':
        description: Error response
```

**Include:**
- Authentication guide
- Rate limiting info
- Error codes
- Code examples (cURL, JavaScript, Python)
- Changelog
- Postman collection