Backend
SaaS Webhook Checklist
A SaaS webhook checklist for payment events, retries, verification, idempotency, and analytics.
Search intent
Implement webhooks
Primary keyword: SaaS webhook checklist
SaaS webhooks connect your product to billing, email, integrations, and analytics. A broken webhook can create wrong access, missed revenue, or bad data.
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Verify every webhook
Never trust webhook payloads without signature verification. Store provider IDs and reject events that fail verification.
- Validate signature.
- Read raw body.
- Log provider event ID.
Make handlers idempotent
Providers retry events. Your handler must handle duplicates safely so purchases, emails, and entitlements are not applied twice.
- Store processed event IDs.
- Use upserts for entitlement.
- Make email sending safe.
Send analytics from the webhook
Completed purchase, refund, and subscription events should be tracked from the webhook because it is the reliable server-side source.
- purchase_completed.
- license_purchased.
- refund_created.
FAQ
Why should SaaS purchases be tracked from webhooks?
Because client redirects can fail or be blocked. The payment provider webhook is the source of truth for completed payment events.
What makes a webhook handler safe?
Signature verification, idempotency, structured logging, retry awareness, and clear error handling make a webhook handler safer.