mcpo

# ⚡️ mcpo Expose any MCP tool as an OpenAPI-compatible HTTP server—instantly. mcpo is a dead-simple proxy that takes an MCP server command and makes it accessible via standard RESTful OpenAPI, so your tools "just work" with LLM agents and apps expecting OpenAPI servers. No custom protocol. No glue code. No hassle. ## 🤔 Why Use mcpo Instead of Native MCP? MCP servers usually speak over raw stdio, which is: - 🔓 Inherently insecure - ❌ Incompatible with most tools - 🧩 Missing standard features like docs, auth, error handling, etc. mcpo solves all of that—without extra effort: - ✅ Works instantly with OpenAPI tools, SDKs, and UIs - 🛡 Adds security, stability, and scalability using trusted web standards - 🧠 Auto-generates interactive docs for every tool, no config needed - 🔌 Uses pure HTTP—no sockets, no glue code, no surprises What feels like "one more step" is really fewer steps with better outcomes. mcpo makes your AI tools usable, secure, and interoperable—right now, with zero hassle. ## 🚀 Quick Usage We recommend using uv for lightning-fast startup and zero config. ```bash uvx mcpo --port 8000 --api-key "top-secret" -- your_mcp_server_command ``` Or, if you’re using Python: ```bash pip install mcpo mcpo --port 8000 --api-key "top-secret" -- your_mcp_server_command ``` To use an SSE-compatible MCP server, simply specify the server type and endpoint: ```bash mcpo --port 8000 --api-key "top-secret" --server-type "sse" -- http://127.0.0.1:8001/sse ``` You can also provide headers for the SSE connection: ```bash mcpo --port 8000 --api-key "top-secret" --server-type "sse" --header '{"Authorization": "Bearer token", "X-Custom-Header": "value"}' -- http://127.0.0.1:8001/sse ``` To use a Streamable HTTP-compatible MCP server, specify the server type and endpoint: ```bash mcpo --port 8000 --api-key "top-secret" --server-type "streamable-http" -- http://127.0.0.1:8002/mcp ``` You can also run mcpo via Docker with no installation: ```bash docker run -p 8000:8000 ghcr.io/open-webui/mcpo:main --api-key "top-secret" -- your_mcp_server_command ``` Example: ```bash uvx mcpo --port 8000 --api-key "top-secret" -- uvx mcp-server-time --local-timezone=America/New_York ``` That’s it. Your MCP tool is now available at http://localhost:8000 with a generated OpenAPI schema — test it live at [http://localhost:8000/docs](http://localhost:8000/docs). 🤝 **To integrate with Open WebUI after launching the server, check our [docs](https://docs.openwebui.com/openapi-servers/open-webui/).** ### 🌐 Serving Under a Subpath (`--root-path`) If you need to serve mcpo behind a reverse proxy or under a subpath (e.g., `/api/mcpo`), use the `--root-path` argument: ```bash mcpo --port 8000 --root-path "/api/mcpo" --api-key "top-secret" -- your_mcp_server_command ``` All routes will be served under the specified root path, e.g. `http://localhost:8000/api/mcpo/memory`. ### 🔄 Using a Config File You can serve multiple MCP tools via a single config file that follows the [Claude Desktop](https://modelcontextprotocol.io/quickstart/user) format. Enable hot-reload mode with `--hot-reload` to automatically watch your config file for changes and reload servers without downtime: Start via: ```bash mcpo --config /path/to/config.json ``` Or with hot-reload enabled: ```bash mcpo --config /path/to/config.json --hot-reload ``` Example config.json: ```json { "mcpServers": { "memory": { "command": "npx", "args": ["-y", "@modelcontextprotocol/server-memory"] }, "time": { "command": "uvx", "args": ["mcp-server-time", "--local-timezone=America/New_York"], "disabledTools": ["convert_time"] // Disable specific tools if needed }, "mcp_sse": { "type": "sse", // Explicitly define type "url": "http://127.0.0.1:8001/sse", "headers": { "Authorization": "Bearer token", "X-Custom-Header": "value" } }, "mcp_streamable_http": { "type": "streamable-http", "url": "http://127.0.0.1:8002/mcp" } // Streamable HTTP MCP Server } } ``` Each tool will be accessible under its own unique route, e.g.: - http://localhost:8000/memory - http://localhost:8000/time Each with a dedicated OpenAPI schema and proxy handler. Access full schema UI at: `http://localhost:8000/<tool>/docs` (e.g. /memory/docs, /time/docs) ### 🔐 OAuth 2.1 Authentication mcpo supports OAuth 2.1 authentication for MCP servers that require it. The implementation defaults to **dynamic client registration**, so most servers only need minimal configuration: ```json { "mcpServers": { "oauth-protected-server": { "type": "streamable-http", "url": "http://localhost:8000/mcp", "oauth": { "server_url": "http://localhost:8000" } } } } ``` #### OAuth Configuration Options **Basic Options:** - `server_url` (required): OAuth server base URL - `storage_type`: "file" (persistent) or "memory" (session-only, default: "file") - `