[Python] Issue on call FastMCP Server using POSTMAN

I can't understand how to resolve this issue. I have this simple MCP Server:

from fastmcp import FastMCP, Context

mcp = FastMCP("Demo ")

@mcp.tool
def add(a: int, b: int) -> int:
"""Add two numbers"""
return a + b

@mcp.tool
def hello(ctx: Context):
ctx.info("in Hello!")
return {"Respone": "Hello!"}


# Static resource
@mcp.resource("config://version")
def get_version(ctx: Context):
ctx.info("Sono in get_version!")
return "2.0.1"


if __name__ == "__main__":
mcp.run(transport='streamable-http')


And I wish test it using a rest call, but when i try:
curl --request POST
--url http://localhost:8000/mcp/tool/hello
--header 'accept: application/json, text/event-stream'
--header 'content-type: application/json'
--header 'x-session-id: my-test-session-123'
--data '{ "jsonrpc": "2.0", "method": "hello", "id": 1 }

I got this error:

{
"jsonrpc": "2.0",
"id": "server-error",
"error": {
"code": -32600,
"message": "Bad Request: Missing session ID"
}
}


How can I resolve it?

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