Paddle Webhooks
Paddle Webhook Debugging Guide
Paddle webhooks drive subscription updates, renewals, cancellations, and payment events. When one of those webhooks fails, the billing state in your app can drift quietly out of sync.
Paddle sends webhooks whenever an important billing event happens. In many SaaS products, those events are the only signal that a subscription changed, renewed, expired, or was cancelled.
When a Paddle webhook fails, the problem often shows up somewhere else first:
- a customer pays but access does not update
- a cancelled subscription remains active
- renewal or plan changes do not sync correctly
This is why webhook debugging needs to start with the billing workflow, not just the endpoint itself.
Step 1: Check Paddle delivery attempts
The first question is simple: did Paddle send the event, and how did your system respond?
Review the Paddle webhook event log and confirm:
- which event type was sent
- when it was sent
- whether retries occurred
- what HTTP status code your endpoint returned
Repeated retries usually mean your endpoint is returning an error or taking too long to respond.
Step 2: Verify the endpoint response path
Many webhook failures are caused by the code path behind the endpoint rather than the route itself.
Check for:
- validation errors
- signature verification failures
- database exceptions
- slow synchronous processing
If the request reaches your server but fails during processing, Paddle still treats the delivery as unsuccessful.
Step 3: Check for timeout and retry patterns
Some webhook bugs are not hard failures. They are slow failures.
If your handler takes too long, Paddle may retry the event even though the original request eventually completed some work. That is how duplicate side effects often begin.
Typical symptoms:
- the same subscription update processed twice
- multiple plan-change jobs created
- billing state updated inconsistently
Step 4: Make sure retries are safe
Paddle retries are normal. Unsafe duplicate processing is the real problem.
The webhook handler should be idempotent. Store the event ID, check whether it has already been processed, and ignore duplicates safely.
If you use Laravel, see our guide on idempotent webhook handling .
Paddle webhook debugging checklist
- Check Paddle webhook delivery attempts
- Confirm your endpoint response code
- Look for retries and slow responses
- Inspect application logs and queue workers
- Verify duplicate events are handled safely
Most Paddle webhook incidents become much easier to fix once you separate delivery problems from business-logic problems.