bug: 404s with example streamable http server

[nicholasf]

Description

Hi, I'm running this code example locally and I'm unable to access any of the default MCP endpoints.

Also, please note, with the example I have also tried specifying WithEndpointPath:

	httpServer := server.NewStreamableHTTPServer(s,
		server.WithEndpointPath("/mcp"),
	)

Logs or Error Messages

But everything 404s:

curl -X GET http://localhost:8080/mcp/health
curl: (7) Failed to connect to localhost port 8080 after 0 ms: Could not connect to server

Environment

• Go version (see go.mod): [e.g. 1.24.4]

Additional Context

I know the server is running as I can form a HTTP connection using telnet.

[gaby]

I have the same problem, the default /health and /capabilities endpoints do not work using a browser/curl.