mcpo is a proxy server that exposes any Model Context Protocol (MCP) tool as an OpenAPI-compatible HTTP server. It targets developers and users who need to integrate MCP-based tools with LLM agents and applications that expect standard RESTful APIs, providing a secure, stable, and interoperable interface without custom glue code.

How It Works

mcpo acts as a bridge between the MCP's stdio communication and standard HTTP. It takes an MCP server command or an SSE endpoint, wraps it, and exposes it via a RESTful API. This approach leverages familiar web standards for security, documentation (auto-generated OpenAPI schemas), and ease of integration, eliminating the inherent insecurity and incompatibility of raw stdio communication.

Quick Start & Requirements

• Install via pip install mcpo or use uvx mcpo for a zero-config experience.
• Run with: mcpo --port 8000 --api-key "top-secret" -- your_mcp_server_command
• Docker image available: ghcr.io/open-webui/mcpo:main
• Requirements: Python 3.8+, uv (optional, recommended).
• Interactive docs available at http://localhost:8000/docs.

Highlighted Details

• Instantly exposes MCP tools via OpenAPI-compatible HTTP servers.
• Auto-generates interactive OpenAPI documentation for each exposed tool.
• Supports both command-line MCP servers and SSE-compatible endpoints.
• Can serve multiple MCP tools from a single configuration file.

Maintenance & Community

• Project is part of the open-webui organization.
• Community contributions are encouraged via pull requests.

Licensing & Compatibility

• License: MIT.
• Permissive license suitable for commercial use and integration with closed-source applications.

Limitations & Caveats

The project appears to be actively maintained, with no explicit limitations or caveats mentioned in the README regarding alpha status or known bugs.