#!/usr/bin/env python3
"""Minimal MCP server to test tool registration."""
import asyncio
import json
import sys
from mcp.server import Server
from mcp.server.stdio import stdio_server
from mcp.types import Tool, TextContent
# Create server
app = Server("test-mcp")
# Register a simple test tool
@app.list_tools()
async def handle_list_tools() -> list[Tool]:
"""Return list of available tools."""
print("DEBUG: handle_list_tools() was called!", file=sys.stderr)
tools = [
Tool(
name="test_tool",
description="A simple test tool",
inputSchema={
"type": "object",
"properties": {
"message": {
"type": "string",
"description": "A test message"
}
},
"required": ["message"]
}
)
]
print(f"DEBUG: Returning {len(tools)} tools", file=sys.stderr)
return tools
@app.call_tool()
async def handle_call_tool(name: str, arguments: dict) -> list[TextContent]:
"""Handle tool execution."""
print(f"DEBUG: handle_call_tool({name}) was called!", file=sys.stderr)
return [TextContent(
type="text",
text=f"Tool '{name}' executed with args: {json.dumps(arguments)}"
)]
async def main():
"""Run the server."""
print("Starting minimal test MCP server", file=sys.stderr)
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())
