Square webhooks
Test and debug Square webhooksfor payments, refunds and inventory
Capture payment confirmations, refund events and inventory changes as Square sends them, and find the event your reconciliation missed.
See every Square event your app receives
Square webhooks drive inventory sync, accounting automation and customer notifications. When payment events fail to deliver, reconciliation turns into guesswork.
Hooklistener keeps every Square request with its headers and body. Debug payment flows, read the signature header your code checks, and use replay (Pro) to test your commerce integration.
Square webhook pain points
Signature validation issues
Square's HMAC signature check fails without a clear reason, and your handler just rejects the event.
Payment reconciliation gaps
A missing payment event breaks accounting. You need every transaction, refund and dispute event in one history.
Inventory sync failures
Stock updates that never reach your e-commerce platform leave counts wrong until someone notices.
How Hooklistener helps with Square webhooks
Raw body and headers for your HMAC check
See the exact body and signature header Square sent, so you can find out why your own HMAC code rejects a Square notification that looks valid.
Every payment event in one history
Keep each Square payment, refund and dispute notification in the history (by plan), and diff two of them to see what changed in a payment's lifecycle.
Inactivity monitors for inventory events
Get an email, Slack or signed-webhook alert when Square inventory events stop arriving, before stock counts drift on your e-commerce platform.
Try it: point Square at a free webhook URL or run a test with the webhook tester.
Square automation workflows
Payment reconciliation
Sync Square transactions with your accounting software and check that no payment, refund or fee adjustment went missing.
Inventory management
Keep online and in-store inventory aligned by following every stock movement event.
Customer notifications
Send order confirmations and refund notices from the right events, tested on real payloads.
Replay a failed webhook without re-triggering the provider
Once a delivery is captured, you can resend its exact headers and body to localhost, staging or production from the dashboard or through your coding agent over MCP, so the provider never has to fire a new event. Replay is on Pro and above. Read the replay guide.
Comparing webhook debugging tools?
See how Hooklistener stacks up against webhook.site, RequestBin, Beeceptor, Hookdeck and ngrok in the best tools to capture and inspect webhook payloads, or read the head-to-head pages for Hooklistener vs ngrok and Hooklistener vs Beeceptor.
Frequently asked questions
Does Hooklistener validate Square signatures?
No. Built-in signature verification covers Stripe, GitHub and Slack. Hooklistener shows the raw body and Square's signature header so you can check your own validation code against the exact request.
Can I replay failed payment webhooks?
Yes. Replay is on Pro and above. Resend a captured Square event to localhost or staging to test reconciliation logic and error handling.
Do you support Square sandbox webhooks?
Yes. Point sandbox webhooks at one endpoint and production webhooks at another, and compare what each sends.
How do I see Square's retries?
Each retry reaches the endpoint as its own captured request, so you can see how often an event was resent and what your endpoint answered each time.
Never lose a Square transaction
Capture and inspect every Square webhook, with replay (Pro), so payments and inventory stay in sync.