MCPInstall

api-reference-documentation

Create comprehensive API reference documentation with OpenAPI/Swagger specs, REST endpoints, authentication, examples, and SDKs. Use when documenting REST APIs, GraphQL APIs, endpoint documentation, or OpenAPI specifications.

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Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/aj-geddes/useful-ai-prompts --skill api-reference-documentation
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads api-reference-documentation automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

API Reference Documentation

Table of Contents

Overview

Generate professional API documentation that developers can use to integrate with your API, including endpoint specifications, authentication, request/response examples, and interactive documentation.

When to Use

  • Documenting REST APIs
  • Creating OpenAPI/Swagger specifications
  • GraphQL API documentation
  • SDK and client library docs
  • API authentication guides
  • Rate limiting documentation
  • Webhook documentation
  • API versioning guides

Quick Start

Minimal working example:

openapi: 3.0.3
info:
  title: E-Commerce API
  description: |
    Complete API for managing e-commerce operations including products,
    orders, customers, and payments.

    ## Authentication
    All endpoints require Bearer token authentication. Include your API key
    in the Authorization header: `Authorization: Bearer YOUR_API_KEY`

    ## Rate Limiting
    - 1000 requests per hour for authenticated users
    - 100 requests per hour for unauthenticated requests

    ## Pagination
    List endpoints return paginated results with `page` and `limit` parameters.
  version: 2.0.0
  contact:
    name: API Support
    email: api@example.com
    url: https://example.com/support
  license:
    name: MIT
    url: https://opensource.org/licenses/MIT
// ... (see reference guides for full implementation)

Reference Guides

Detailed implementations in the references/ directory:

GuideContents
OpenAPI Specification Exampleopenapi: 3.0.3
List ProductsList Products

Best Practices

✅ DO

  • Use OpenAPI 3.0+ specification
  • Include request/response examples for every endpoint
  • Document all query parameters and headers
  • Provide authentication examples
  • Include error response formats
  • Document rate limits and pagination
  • Use consistent naming conventions
  • Include SDK examples in multiple languages
  • Document webhook payloads
  • Provide interactive API explorer (Swagger UI)
  • Version your API documentation
  • Include migration guides for breaking changes

❌ DON'T

  • Skip error response documentation
  • Forget to document authentication
  • Use inconsistent terminology
  • Leave endpoints undocumented
  • Ignore deprecation notices
  • Skip versioning information

FAQ

What does the api-reference-documentation skill do?

Create comprehensive API reference documentation with OpenAPI/Swagger specs, REST endpoints, authentication, examples, and SDKs. Use when documenting REST APIs, GraphQL APIs, endpoint documentation, or OpenAPI specifications.

How do I install api-reference-documentation?

Run npx skills add https://github.com/aj-geddes/useful-ai-prompts --skill api-reference-documentation in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/api-reference-documentation/ (personal) or .claude/skills/api-reference-documentation/ (project).

Which AI agents can use api-reference-documentation?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is api-reference-documentation safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains api-reference-documentation?

It is published by aj-geddes in aj-geddes/useful-ai-prompts. It has 494 recorded installs.

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