Document API

Generate comprehensive API documentation from your code.

この記事の内容

メモ

This prompt file generates OpenAPI 3.0 specifications for REST API endpoints by analyzing your API code and creating standardized, machine-readable documentation.

OpenAPI specification prompt

Text
---
mode: 'agent'
description: 'Generate OpenAPI 3.0 specification for API endpoints'
---

## Task

Analyze the API endpoint code and generate a valid OpenAPI 3.0 specification in YAML format.

## OpenAPI Structure

Generate a complete OpenAPI spec including:

1. **OpenAPI Header**
   - OpenAPI version (3.0.3)
   - API info (title, description, version)
   - Server configuration

2. **Path Definitions**
   - HTTP method and path
   - Operation summary and description
   - Tags for organization

3. **Parameters Schema**
   - Path parameters with type validation
   - Query parameters with constraints and defaults
   - Request body schema using proper JSON Schema
   - Required vs optional parameters

4. **Response Schemas**
   - Success responses (200, 201, etc.) with schema definitions
   - Error responses (400, 401, 404, 500) with error schema
   - Content-Type specifications
   - Realistic example values

5. **Components Section**
   - Reusable schemas for request/response models
   - Security schemes (Bearer token, API key, etc.)
   - Common parameter definitions

## Requirements

- Generate valid OpenAPI 3.0.3 YAML that passes validation
- Use proper JSON Schema for all data models
- Include realistic example values, not placeholders
- Define reusable components to avoid duplication
- Add appropriate data validation (required fields, formats, constraints)
- Include security requirements where applicable

Focus on: ${input:endpoint_focus:Which specific endpoint or endpoints should be documented?}

Generate production-ready OpenAPI specification that can be used with Swagger UI, Postman, and code generators.

How to use this prompt file

  1. Save the above content as document-api.prompt.md in your .github/prompts folder.
  2. In Visual Studio Code, display the Copilot Chat view and enter /document-api. Optionally, you can also specify what specific endpoint you want documentation for by typing endpoint_focus=GET /activities, for example.

Further reading