Test Clerk webhooks in real-time — no signup, no tunnels.

Why test Clerk webhooks with HookSense

Quick start — 3 steps

1. 1
   Get your free webhook URL

   Create a free endpoint at hooksense.com. You get a unique URL instantly — no credit card, no config.

2. 2
   Paste it into Clerk

   In the Clerk dashboard, add the URL as your webhook endpoint and pick the events you want (user.created, user.updated, etc.).

3. 3
   Trigger an event and watch it arrive

   Fire a test event from Clerk — it lands in HookSense within milliseconds. Inspect headers, body, and signature. Replay when ready.

Common Clerk webhook events

Testing tips specific to Clerk

• Clerk uses Svix for signing — HookSense handles the svix-id / svix-timestamp / svix-signature trio automatically
• Svix retries for up to 24 hours with exponential backoff — use HookSense replay to simulate retries
• Guard user sync logic by verifying the signature before writing to your DB
• Use HookSense search to filter by user.id or email inside payloads during onboarding QA

Frequently asked

How does HookSense verify Clerk's Svix signatures?

Clerk uses Svix for signing, which adds svix-id, svix-timestamp, and svix-signature headers. HookSense verifies the full trio automatically once you paste the signing secret from the Clerk dashboard.

Can I test Clerk webhooks without signing up real users?

Yes. Capture a real user.created event once (or trigger one from the Clerk dashboard), then replay it against your handler as often as you like. Great for building out onboarding or sync logic without polluting your user table.

Why does my Clerk webhook keep retrying?

Svix retries for up to 24 hours with exponential backoff if your handler doesn't return 2xx. Use HookSense to see the exact response your handler sent and replay the event after fixing the issue.

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