#!/usr/bin/env python3
"""Ultra-minimal MCP server that definitely works."""
import asyncio
from mcp.server import Server
from mcp.server.stdio import stdio_server
from mcp.types import Tool, TextContent
# Create server
app = Server("minimal-test")
# Define one simple tool
@app.list_tools()
async def handle_list_tools() -> list[Tool]:
return [
Tool(
name="echo",
description="Echo back a message",
inputSchema={
"type": "object",
"properties": {
"message": {"type": "string"}
},
"required": ["message"]
}
)
]
@app.call_tool()
async def handle_call_tool(name: str, arguments: dict) -> list[TextContent]:
if name == "echo":
msg = arguments.get("message", "no message")
return [TextContent(type="text", text=f"Echo: {msg}")]
return [TextContent(type="text", text="Unknown tool")]
async def main():
async with stdio_server() as (read_stream, write_stream):
await app.run(read_stream, write_stream, app.create_initialization_options())
if __name__ == "__main__":
asyncio.run(main())
