mcpo is a simple and easy-to-use proxy tool that can quickly convert any MCP tool into an OpenAPI-compatible HTTP server, enabling access through standard RESTful interfaces and facilitating integration with LLM agents and applications.
5 points
23.8K

What is mcpo?

mcpo is a simple and efficient proxy tool that can convert any command-line tool based on the Model Context Protocol (MCP) into an HTTP service compliant with the OpenAPI standard. By exposing functions through RESTful APIs, traditional tools can seamlessly integrate with modern LLM applications and automation processes.

How to use mcpo?

Simply specify the MCP tool command to be proxied in the command line, and mcpo will automatically generate the corresponding HTTP endpoints, OpenAPI documentation, and an interactive test interface. It supports two modes: single-command proxy and batch proxy using a configuration file.

Use cases

When you need to integrate local tools into an AI workflow, build an automation pipeline, or add a standardized API interface to an existing tool, mcpo is the best choice. It is particularly suitable for scenarios that require integration with AI platforms such as Open WebUI.

Main Features

Automatic OpenAPI Conversion
Automatically convert MCP tools into HTTP services compliant with the OpenAPI 3.0 specification without writing any code
Parallel Proxy for Multiple Tools
Simultaneously proxy multiple MCP tools through a configuration file, with each tool having an independent API endpoint
SSE Streaming Support
Natively support MCP tools using the Server-Sent Events (SSE) protocol for real-time data push
Out-of-the-Box Security
Built-in API key authentication mechanism to protect service endpoints from unauthorized access
Advantages
๐Ÿš€ Zero-configuration conversion: Obtain a standardized API without modifying the original tool code
๐Ÿ”Œ Wide compatibility: Any tool following the MCP protocol can be immediately integrated
๐Ÿ“š Automatic documentation: Interactive Swagger UI is automatically generated
๐Ÿ›ก๏ธ Enhanced security: A more secure HTTP channel compared to native stdio communication
Limitations
Performance overhead: The HTTP protocol introduces additional latency compared to direct stdio communication
Functionality limitations: Some advanced MCP features may not be perfectly mapped to the RESTful model
Learning curve: Basic knowledge of OpenAPI ecosystem-related tools is required

How to Use

Install mcpo
Install mcpo via Python pip or the uv tool
Start the proxy service
Specify the MCP tool command to be proxied in the command line
Access the API documentation
Open the automatically generated interactive documentation interface in a browser

Usage Examples

Time service proxy
Convert a local time query tool into an API service
Multi-tool configuration
Simultaneously proxy multiple tools using a configuration file

Frequently Asked Questions

Will mcpo affect the functionality of the original tool?
How to ensure API access security?
Is Windows system supported?

Related Resources

Official Documentation
Detailed integration and usage guide
GitHub Repository
Source code and issue tracking
MCP Protocol Specification
Understand the working principle of the underlying protocol

Installation

Copy the following command to your Client for configuration
Note: Your key is sensitive information, do not share it with anyone.

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