Question: tool/call execution not working

[lmcdasi]

I'm having an issue making the starter-webflux-server working. I do have the tool registered but when a tool/call is sent the weather tool does not get invoked
I use starter-stdio-server to try to understand more and I send the following two json requests:

1. {"jsonrpc": "2.0","method": "initialize","params": {"protocolVersion": "2024-11-05","model": "gpt-4","tools": ["getWeatherForecastByLocation", "getAlerts"], "capabilities": {"tools": {}}},"id": 1}

which gives:
2025-05-26T09:25:19.635-04:00 DEBUG 24580 --- [pool-2-thread-1] i.m.s.t.StdioServerTransportProvider : Received JSON message: {"jsonrpc": "2.0","method": "initialize","params": {"protocolVersion": "2024-11-05","model": "gpt-4","tools": ["getWeatherForecastByLocation", "getAlerts"], "capabilities": {"tools": {}}},"id": 1}
2025-05-26T09:25:19.637-04:00 DEBUG 24580 --- [pool-2-thread-1] io.modelcontextprotocol.spec.McpSchema : Received JSON message: {"jsonrpc": "2.0","method": "initialize","params": {"protocolVersion": "2024-11-05","model": "gpt-4","tools": ["getWeatherForecastByLocation", "getAlerts"], "capabilities": {"tools": {}}},"id": 1}
2025-05-26T09:25:19.656-04:00 DEBUG 24580 --- [pool-2-thread-1] i.m.spec.McpServerSession : Received request: JSONRPCRequest[jsonrpc=2.0, method=initialize, id=1, params={protocolVersion=2024-11-05, model=gpt-4, tools=[getWeatherForecastByLocation, getAlerts], capabilities={tools={}}}]
2025-05-26T09:25:19.666-04:00 INFO 24580 --- [pool-2-thread-1] i.m.server.McpAsyncServer : Client initialize request - Protocol: 2024-11-05, Capabilities: ClientCapabilities[experimental=null, roots=null, sampling=null], Info: null

2. {"jsonrpc": "2.0","method": "tools/call","params": {"name": "getWeatherForecastByLocation","arguments": {"arg0": 47.6062,"arg1": -122.3321}},"id": 2}

2025-05-26T09:26:36.458-04:00 DEBUG 24580 --- [pool-2-thread-1] i.m.s.t.StdioServerTransportProvider : Received JSON message: {"jsonrpc": "2.0","method": "tools/call","params": {"name": "getWeatherForecastByLocation","arguments": {"arg0": 47.6062,"arg1": -122.3321}},"id": 2}
2025-05-26T09:26:36.460-04:00 DEBUG 24580 --- [pool-2-thread-1] io.modelcontextprotocol.spec.McpSchema : Received JSON message: {"jsonrpc": "2.0","method": "tools/call","params": {"name": "getWeatherForecastByLocation","arguments": {"arg0": 47.6062,"arg1": -122.3321}},"id": 2}
2025-05-26T09:26:36.463-04:00 DEBUG 24580 --- [pool-2-thread-1] i.m.spec.McpServerSession : Received request: JSONRPCRequest[jsonrpc=2.0, method=tools/call, id=2, params={name=getWeatherForecastByLocation, arguments={arg0=47.6062, arg1=-122.3321}}]

And there is no actual execution of the getWeatherForecastByLocation tool (I had added a logger.info).

Any idea what I do wrong ?