mcp.mbt

Overview

This is a complete MCP server implementation written in MoonBit, providing type safety through the language's static typing system. It supports all core MCP protocol features including tools, resources, and prompts with a clean API design. The server offers dual transport support (STDIO for Claude Desktop and HTTP with SSE streaming), making it versatile for different integration scenarios. While still experimental, the codebase includes thorough documentation with inline examples and 87+ unit tests.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• EchoTool

  Echoes back the input text

  Try:Echo Hello WorldTry:Repeat this text back to me
• CalculateTool

  Calculator with arithmetic operations

  Try:Calculate 2+2Try:What is 15 divided by 3?
• TransformTextTool

  Text transformation (uppercase, lowercase, reverse, etc.)

  Try:Convert this to uppercaseTry:Reverse the text: hello
• AnalyzeTextTool

  Text analysis (word count, character count, etc.)

  Try:Count words in this sentenceTry:Analyze the character count of 'test'
• GetTimestampTool

  Get current timestamp in various formats

  Try:What is the current time?Try:Get timestamp in ISO format

Note: Tool names were extracted from the 'Examples' section, but detailed signatures weren't provided in the documentation

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Installation

moon add colmugx/mcp

{
  "mcpServers": {
    "my-server": {
      "command": "moon",
      "args": ["run", "path/to/your_server.mbt"]
    }
  }
}

moon run @examples/cmd/main

FAQ

What transports are supported?

The server supports STDIO transport (for Claude Desktop) and HTTP transport with SSE streaming. WebSocket transport is planned but not yet implemented.

Is this implementation production-ready?

The project is currently marked as experimental with the API subject to change. While it includes comprehensive testing and core functionality, some advanced features like structured logging, metrics collection, and authentication are still pending.

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