While developing and testing 3rd party integrations, it is useful to have an ability to receive webhooks on your localhost.

Here, the forward command takes destination and one optional parameter --bucket which to reuse webhooks:

relay forward --bucket [BUCKET] [DESTINATION]

Once agent is running, you can supply provided public URL (format my.webhookrelay.com/v1/webhooks/unique-id) to your 3rd party services.

More details are available on CLI documentation page.