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How do I verify webhooks or callbacks with Port Listener?

Listen on the port your webhook sender will use, then trigger the webhook from the external service. Port Listener displays the incoming HTTP request including headers and payload data.

This lets you confirm:

  • The webhook is actually being sent
  • The data format matches what you expect
  • The correct IP address is making the request

Once you have verified the data shape, you can wire up your real service with confidence.

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Added: Feb 27, 2026   |   Last Updated: