A Notification is a request object that does not have an id member. This means that the client is not interested in receiving a response from the server for this request. As a result, the server will not send a response for a Notification.

You can try out a Notification by using the following curl command:

curl '' --data-binary '{"jsonrpc":"2.0","method":"tennis@ping"}'

The execution result should be an empty JSON object:


Notifications are useful when the client is only interested in triggering an action on the server, but does not need to receive a response. They can be used to send events or updates to the server without requiring a response, allowing for more efficient communication between client and server.