MCPHy

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🚀 Turn Any API into a Conversational AI Powerhouse

Transform your REST APIs into intelligent, chat-driven MCP servers with zero code changes

🚀 Ready to try? npm install -g mcphy • 🎯 Quick Start • 📖 API Docs • 🎨 Examples • ⭐ Star

Requirements

• Node.js >= 18.0.0

• npm >= 9.0.0

• An API specification file (Swagger/OpenAPI or Postman Collection)

• OpenAI API Key (optional, for enhanced AI-powered understanding)

Related MCP server: Swagger MCP

Installation

# Option 1: Install globally
npm install -g mcphy

# Option 2: Try without installing
npx mcphy --help

Quick Start

# 1. Initialize with your API spec
mcphy init

# 2. Start the conversational server
mcphy serve

# 3. Open your browser
open http://localhost:3000

That's it! Start chatting with your API in plain English.

🚨 Initialization Issues?

If mcphy init fails, here are quick fixes:

❌ No API spec found?

# Specify your API spec file explicitly
mcphy init -f path/to/your/swagger.yaml

❌ Invalid specification?

# Validate your spec first
mcphy validate path/to/your/api.yaml

❌ File not found?

# Check the file exists and use absolute path
mcphy init -f /full/path/to/api.yaml

📖 See Full Troubleshooting Guide for detailed solutions

Try It Now

Want to test MCPhy immediately? Use our included example:

# Clone and test with example API
git clone https://github.com/sehmim/mcphy.git
cd mcphy
npm install
npm run build
npm link

# Test with example
cd examples
mcphy init -f sample-swagger.yaml
mcphy serve

Then open http://localhost:3000 and try:

• "Show me all pets"

• "Create a new pet named Max"

• "Get pet with ID 1"

What It Does

• 🧠 Natural Language Processing - Ask questions in plain English

• 🔌 Real API Calls - Actually makes requests to your backend

• ⚠️ Smart Guidance - Helps when information is missing

• 💬 Web Interface - Beautiful chat UI with real-time responses

• 📦 Export Ready - Create standalone packages

• 🤖 Smart Enhancement - Optional AI-powered API understanding 🆕

  • LLM-Powered - GPT-4 enhances descriptions, parameters, and examples

  • Pattern-Based Fallback - Smart enhancements even without AI

  • OpenAPI/Swagger & Postman - Works with all major API formats

Example

You: "create booking for John Doe for oil change for 2025-01-15"

MCPhy: ✅ Matched POST /bookings
       📤 Making API call...
       📋 Response: {"id": "booking-123", "status": "created"}

Why Developers Love This

• Zero Code Changes - Works with existing APIs

• Natural Language - No need to remember endpoint names

• Real Responses - Actually calls your backend

• Smart Guidance - Helps when information is missing

• Beautiful UI - Professional chat interface

• Easy Export - Create standalone packages

Commands

Supported Formats

• ✅ OpenAPI 3.0+

• ✅ Swagger 2.0

• ✅ Postman Collections (with LLM-powered parsing) 🆕

🚀 New: LLM-Powered API Parsing

MCPhy now uses GPT-4 to intelligently understand and enhance all API specifications!

OpenAPI/Swagger Enhancement

• 📝 Enhanced Descriptions - Generates user-friendly API descriptions

• 🔍 Better Parameter Docs - Adds context and examples to parameters

• 💡 Usage Examples - Provides practical endpoint usage guidance

• 🎯 Smart Summaries - Creates clear, concise operation summaries

• 🔗 Workflow Discovery - Identifies common API patterns

Postman Collection Support

• 🤖 Deep Understanding - Analyzes collection structure and intent

• 📦 Automatic Conversion - Transforms to OpenAPI-compatible format

• 🔍 Smart Detection - Auto-detects collections in your project

• 📝 Rich Parsing - Extracts parameters, headers, body schemas

• 🌐 Base URL Extraction - Finds API base URL from variables

Usage:

# Works with any format - OpenAPI, Swagger, or Postman
mcphy init -f api-spec.yaml
mcphy init -f swagger.json
mcphy init -f postman_collection.json

# Validate any format
mcphy validate your-api-file

💡 OpenAI API Key Benefits (Optional):

• 🤖 Enhanced Understanding - Powers intelligent API analysis

• 📝 Rich Descriptions - Generates comprehensive documentation

• 🔍 Smart Parameter Docs - Adds context-aware explanations

• 💡 Usage Examples - Provides practical guidance for endpoints

• 🚀 Works Without It - Basic parsing is fully functional

Documentation

• 📖 API Reference - Programmatic usage

• 🎨 Examples - Real-world examples

Development

git clone https://github.com/sehmim/mcphy.git
cd mcphy
npm install
npm run build
npm link

License

MIT © 2025 MCPhy

Contributing

1. Fork the repository

2. Create a feature branch

3. Make your changes

4. Submit a pull request

Made with ❤️ by developers, for developers

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