Fix webhook signature verification fail
Webhook signature verification fails when the computed HMAC doesn't match the header. Common causes: wrong secret, payload modification, or encoding mismatch.
Common causes
- Using the wrong webhook secret.
- Verifying raw body vs parsed JSON.
- Stripe: timestamp tolerance exceeded.
How to fix
- Use the exact secret from your provider dashboard.
- Verify against the raw request body, not parsed JSON.
- Use Signature Validator to test.
Use our tool
Verify signatureRelated