Authorizations
Secp256r1 (P-256) asymmetric signature of the webhook payload, which can be used to verify that the webhook was sent by Grid.
To verify the signature:
- Get the Grid public key provided to you during integration
- Decode the base64 signature from the header
- Create a SHA-256 hash of the request body
- Verify the signature using the public key and the hash
If the signature verification succeeds, the webhook is authentic. If not, it should be rejected.
Body
ISO8601 timestamp when the webhook was sent (can be used to prevent replay attacks)
"2025-08-15T14:32:00Z"
Unique identifier for this webhook delivery (can be used for idempotency)
"Webhook:019542f5-b3e7-1d02-0000-000000000007"
Type of webhook event
INCOMING_PAYMENT
, OUTGOING_PAYMENT
, TEST
, BULK_UPLOAD
, INVITATION_CLAIMED
, KYC_STATUS
, ACCOUNT_STATUS
Response
Webhook received successfully