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MCP Link

by automation-ai-labs

API/Clients & IntegrationOpenAPIAPIAI AgentsAutomationServer

MCP Link automates the conversion of OpenAPI V3 APIs into MCP Servers, bridging the gap between existing APIs and AI Agent ecosystems. It standardizes the conversion process, eliminating manual effort and ensuring complete functionality.

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MCP Link - Convert Any OpenAPI V3 API to MCP Server

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🧩 Architecture

MCP Link

MCP Link

🤔 Why MCP Link?

There is a notable gap in the current AI Agent ecosystem:

  • Most MCP Servers are simple wrappers around Web APIs
  • Functionality interfaces may not be complete, depending on developer implementation
  • Manual creation of MCP interfaces is time-consuming and error-prone
  • Lack of standardized conversion processes

MCP Link solves these issues through automation and standardization, allowing any API to easily join the AI-driven application ecosystem.

🌟 Key Features

  • Automatic Conversion: Generate complete MCP Servers based on OpenAPI Schema
  • Seamless Integration: Make existing RESTful APIs immediately compatible with AI Agent calling standards
  • Complete Functionality: Ensure all API endpoints and features are correctly mapped
  • Zero Code Modification: Obtain MCP compatibility without modifying the original API implementation
  • Open Standard: Follow the MCP specification to ensure compatibility with various AI Agent frameworks

🌐 Online Version

Try our hosted version at mcp-link.vercel.app to quickly convert and test your APIs without installation.

🚀 Quick Start

Installation

# Clone repository
git clone https://github.com/automation-ai-labs/mcp-link.git
cd mcp-openapi-to-mcp-adapter

# Install dependencies
go mod download

Running

# Specify port
go run main.go serve --port 8080 --host 0.0.0.0

Parameter Description

  • s= - URL of the OpenAPI specification file
  • u= - Base URL of the target API
  • h= - Authentication header format, in the format of header-name:value-prefix
  • f= - Path filter expressions to include or exclude API endpoints. Syntax:
    • +/path/** - Include all endpoints under /path/
    • -/path/** - Exclude all endpoints under /path/
    • +/users/*:GET - Include only GET endpoints for /users/{id}
    • Multiple filters can be separated by semicolons: +/**:GET;-/internal/**
    • Wildcards: * matches any single path segment, ** matches zero or more segments

Examples

| _ | API | MCP Link URL | Authentication Method | |------|-----|-------------|---------| |

Brave

Brave

| Brave Search | https://mcp-link.vercel.app/links/brave | API Key | |
DuckDuckGo

DuckDuckGo

| DuckDuckGo | https://mcp-link.vercel.app/links/duckduckgo | None | |
Figma

Figma

| Figma | https://mcp-link.vercel.app/links/figma | API Token | |
GitHub

GitHub

| GitHub | https://mcp-link.vercel.app/links/github | Bearer Token | |
Home Assistant

Home Assistant

| Home Assistant | https://mcp-link.vercel.app/links/homeassistant | Bearer Token | |
Notion

Notion

| Notion | https://mcp-link.vercel.app/links/notion | Bearer Token | |
Slack

Slack

| Slack | https://mcp-link.vercel.app/links/slack | Bearer Token | |
Stripe

Stripe

| Stripe | https://mcp-link.vercel.app/links/stripe | Bearer Token | |
TMDB

TMDB

| TMDB | https://mcp-link.vercel.app/links/tmdb | Bearer Token | |
YouTube

YouTube

| YouTube | https://mcp-link.vercel.app/links/youtube | Bearer Token |

Usage in AI Agents

{
  "mcpServers": {
    "@service-name": {
      "url": "http://localhost:8080/sse?s=[OpenAPI-Spec-URL]&u=[API-Base-URL]&h=[Auth-Header]:[Value-Prefix]"
    }
  }
}

These URLs allow any API with an OpenAPI specification to be immediately converted into an MCP-compatible interface accessible to AI Agents.

📋 Future Development

  • MCP Protocol OAuthflow: Implement OAuth authentication flow support for MCP Protocol
  • Resources Support: Add capability to handle resource-based API interactions
  • MIME Types: Enhance support for various MIME types in API requests and responses