ToolsClerk Webhook Tester
Smart Parsing for Clerk

Clerk Webhook Tester

Clerk webhooks use the Svix envelope with the meaningful data nested under data. HookRay flattens it so type, user id, email, and the event timestamp are visible immediately.

What HookRay Highlights from a Clerk Webhook

HookRay: highlighted fields
Event Typecritical
type"user.created"

user.created, session.created, etc.

User/Session IDcritical
data.id"user_2mK3vP2a91"
Email Addresseshigh
data.email_addresses[{"email_address":"ava@example.com"}]

Array; the primary entry has primary_email_address_id matching its id.

First Namemedium
data.first_name"Ava"
Event Timestamp (ms)medium
timestamp1763582500000

Top-level on the envelope, in milliseconds since epoch.

webhook.site / raw: full JSON
{
  "type": "user.created",
  "data": {
    "id": "user_2mK3vP2a91",
    "first_name": "Ava",
    "last_name": "Johnson",
    "email_addresses": [
      {
        "email_address": "ava@example.com"
      }
    ]
  },
  "object": "event",
  "timestamp": 1763582500000
}

Same payload, no parsing — you scroll, you scan, you guess.

Clerk gotcha: Clerk's envelope timestamp is in milliseconds since epoch, not seconds. Multiply Unix timestamps before comparing.

Test a Clerk Webhook in 30 Seconds

  1. 1

    Get a free webhook URL

    Click Start Testing — HookRay generates an instant URL like https://hookray.com/api/hook/abc123. No signup.

  2. 2

    Paste it into Clerk

    Open the Clerk webhook settings (docs), paste the HookRay URL as your endpoint, and pick the events you want to receive.

  3. 3

    Trigger an event, inspect the payload

    Trigger a test event in Clerk. HookRay captures the payload for raw inspection and one-click replay. The field guide above shows the 5 Clerk paths the upcoming parser will surface — use it as a cheat sheet while you wire up your handler.

HookRay vs Generic Webhook Testers

Capabilitywebhook.siteHookRay
Free tier✓ 100 req✓ 100 req/mo
No signup required
Clerk-specific field parsing
One-click replay✓ (Pro)✓ Free
30-day history$9/mo$9/mo
Persistent URLs$9/mo$9/mo

See the broader comparison in The 7 Best Webhook Testing Tools (2026).

Start Testing Clerk Webhooks Now

Free, no signup. Raw capture and replay included; Clerk smart parsing previewed above.

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Deeper Clerk Webhook Resources

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