Simple Tool Server MCP Server

What is Simple Tool Server?

Simple Tool Server is a lightweight, asynchronous Python-based server that implements the Model Context Protocol (MCP) for running and managing MCP tools in isolated, secure Docker environments.

How to use Simple Tool Server?

Deploy the Docker container (Debian 13, Python 3.13, FastAPI) and load MCP tools via uvx or npx. Access tools through SSE, Swagger REST, or OpenAPI.json endpoints. Configure tool filtering (whitelist/blacklist) and custom environment variables via JSON configuration or environment variables.

Key features of Simple Tool Server

• Local Docker container with a single SSE-MCP connection
• Dynamic tool loading and filtering (whitelist/blacklist)
• Access via SSE, Swagger REST, and OpenAPI.json
• Each MCP tool runs in its own thread for isolation
• JSON-based configuration – easy to edit and portable
• Async FastAPI Python server with full type hints

Use cases of Simple Tool Server

• Run and manage MCP tools locally in a secure, isolated Docker container
• Quickly test or prototype MCP servers using uvx/npx without complex setup
• Integrate MCP tools with OpenWebUI via OpenAPI.json endpoints
• Deploy a custom MCP server with tailored environment variables and admin authorization