Standard endpoints are not available

[puneetloya]

I am running a streamable HTTP server. To test endpoints, I am doing this:

curl -X POST http://localhost:8080/mcp \
 -H "Content-Type: application/json" -H "Mcp-Session-Id: mcp-session-269e99d9-d568-4d17-b4c5-f1594b77a5cc" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/list",
    "params": {}
  }'

I wanted to be able to call endpoints like this:

curl -X POST http://localhost:8080/mcp/tools/list \
 -H "Content-Type: application/json" -H "Mcp-Session-Id: mcp-session-269e99d9-d568-4d17-b4c5-f1594b77a5cc" 

The documentation says it supports this: https://mcp-go.dev/transports/http#standard-mcp-endpoints but its not working for me.

Example code:

func (s *MyMCPServer) RunHttp(ctx context.Context, httpMode bool) *server.StreamableHTTPServer {
   return server.NewStreamableHTTPServer(s.server, server.WithEndpointPath("/sse"))
}

func NewMyMCPServer(info ServerInfo) (*MyMCPServer, error) {

     mcpServer := server.NewMCPServer(
   	info.Name,
   	info.Version,
   	server.WithToolCapabilities(true),
   	server.WithRecovery(),
   )
   
   s := &MyMCPServer{
   	server:      mcpServer,
   }
   return s
}

func main() {
      myMcpServer, err := mcp.NewMyMCPServer(mcp.ServerInfo{
   	Name:        "my-mcp",
   	Version:     "1.0.0",
   	Description: "coolest mcp server",
   })
   
   httpServer := myMcpServer.RunHttp(ctx, *httpMode)
       if err := httpServer.Start(":8080"); err != nil {
           logger.Fatal("Server error", zap.Error(err))
       }

}

What am I missing?