You can specify list of strings under "skip_keys" key in options. Whenever you make an API request with header "Webhook-Skip-Key" equal to any of the specified skip keys, the Webhook will not be triggered. This can prevent a Webhook loop.
Example: Insert into every header of your Post Request the information "my integration", so Pipeliner is not sending the webhooks back whenever the record is created/updated and the record was created by request with header "my integration"