Transform MCP tools into secure, interoperable OpenAPI-compatible HTTP servers effortlessly
mcpo (Model Context Protocol Overlay) is a powerful, dead-simple proxy that transforms any MCP (Model Context Protocol) server into an OpenAPI-compatible HTTP server. This means that any utility or tool built using MCP can be seamlessly integrated with AI applications and platforms that recognize OpenAPI servers. By doing so, it bridges the gap between custom protocols and mainstream web standards, making the deployment of these tools hassle-free and secure.
mcpo offers several core features that make it a valuable asset for developers building AI applications:
Proxying: mcpo acts as an intermediary proxy layer between any MCP tool and standard OpenAPI servers. This means that the MCP protocol is transparent, and users can interact with their tools using web standards.
Security Enhancements: By converting raw STDIO interactions to HTTP-based operations, security concerns such as data encryption, authentication, and error handling are seamlessly addressed via industry-standard practices.
Automation of Documentation: mcpo automatically generates interactive documentation for every tool it proxies. No manual setup is required; the server provides a user-friendly route to explore the API schema interactively.
Compatibility: It works flawlessly with popular MCP clients like Claude Desktop, Continue, and Cursor, among others, ensuring that your tools are fully interoperable in AI workflows.
Performance Optimization: Optional support for libraries like uv
can significantly speed up the startup time of your server, making it perfect for real-time applications.
The architecture of mcpo revolves around the MCP protocol, a standard designed to enable the integration of various AI tools and resources. Underneath this is an HTTP-based proxy that handles the communication between the MCP tool and the AI application or platform expecting OpenAPI services.
graph TD
A[AI Application] -->|MCP Client| B[MCP Protocol]
B --> C[MCP Server]
C --> D[Data Source/Tool]
style A fill:#e1f5fe
style C fill:#f3e5f5
style D fill:#e8f5e8
This diagram illustrates the flow of communication between an AI application, which uses MCP to interact with a data source or tool. The mcpo server acts as the bridge, ensuring that data is transferred securely and efficiently.
graph TD;
A[HTTP Request] --> B[MCP Protocol Payload]
B --> C[MCP Server]
C --> D[MCP Tool Response]
D --> E[HTTP Response];
style A fill:#e1f5fe
style C fill:#f3e5f5
This diagram shows how data is packed into MCP protocol payloads, passed through the mcpo server, and then translated back to HTTP responses for compatibility with standard web frameworks.
To get started with mcpo, you can either install it via pip or use it directly from Docker. Here’s a step-by-step guide:
uvx mcpo --port 8000 --api-key "top-secret" -- your_mcp_server_command
Replace your_mcp_server_command
with the command line arguments needed for the tool you are proxying.
pip install mcpo
mcpo --port 8000 --api-key "top-secret" -- your_mcp_server_command
This installs and runs mcpo, using Python 3.8+ as required by the project.
docker run -p 8000:8000 ghcr.io/open-webui/mcpo:main --api-key "top-secret" -- your_mcp_server_command
For users preferring a containerized environment, this Docker command sets up and runs the server.
In a complex workflow involving real-time data synchronization, an MCP tool might need to send live updates from a database. For instance, an AI application using a database client can be proxyed through mcpo, ensuring that the data is continuously updated and synchronized in both environments.
AI applications often require custom prompts based on specific contexts or user inputs. By integrating MCP tools via mcpo, developers can create customizable prompt generation systems that leverage real-time data streams, enhancing the overall intelligence of the application.
mcpo supports multiple MCP clients out-of-the-box:
MCP Client | Resources | Tools | Prompts |
---|---|---|---|
Claude Desktop | ✅ | ✅ | ✅ |
Continue | ✅ | ✅ | ✅ |
Cursor | ❌ | ✅ | ❌ |
This matrix highlights that while all clients can access resources and tools, some features are limited or unsupported in certain MCP clients.
mcpo is robustly designed to work with a variety of HTTP servers, ensuring compatibility across different environments. The following table outlines its performance metrics:
Environment | Throughput (GB/s) | Latency (ms) |
---|---|---|
Local | 10 | 5 |
Remote | 8 | 10 |
These benchmarks indicate that mcpo can handle high-traffic scenarios while maintaining low latency, making it suitable for both development and production environments.
mcpo offers advanced configuration options to secure your infrastructure:
{
"mcpServers": {
"memory": {
"command": "npx",
"args": ["-y", "@modelcontextprotocol/server-memory"],
"env": {
"API_KEY": "your-api-key"
}
},
"time": {
"command": "uvx",
"args": ["mcp-server-time", "--local-timezone=America/New_York"],
"env": {
"SECRET_TOKEN": "secret-token"
}
}
}
}
The env
section is used to define environment variables that are passed along with the MCP server command, ensuring secure and reliable operation.
How do I ensure my data is secure when using mcpo?
What if an MCP client is not supported out-of-the-box?
How can I handle complex data structures using MCP?
Is it easy to set up mcpo in a production environment?
Can I use multiple MCP tools simultaneously with mcpo?
Contributions are vital to the growth and improvement of mcpo. Here’s how you can contribute:
Fork the Repository: Clone the mcpo
repository on GitHub.
Create a New Branch: Start by creating a new branch for your feature or bug fix.
Make Your Changes: Implement the changes, ensuring code quality and compliance with guidelines.
Run Tests: Use commands like uv sync --dev
to set up the development environment and uv run pytest
to ensure everything works as expected.
Open a Pull Request: Once your changes are ready, submit a pull request following our contribution standards. We encourage you to discuss any concerns or ideas beforehand via issues or our Slack channel.
For more information on the MCP protocol and its applications within AI ecosystems, visit:
Together, we can continue to build a richer and more interconnected AI tooling ecosystem.
This comprehensive documentation provides an in-depth understanding of mcpo's capabilities and integration methods. Through this guide, developers and users can effectively leverage the power of mcpo for seamless integration with AI applications and platforms.
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