Webhook Events
Swap updated
Fired when a swap changes status.
Statuses: created → funded → completed (or failed).
sendTransaction is always present — it contains the transaction the customer needs to sign and submit. Once signed, the field remains but is no longer actionable. On completion, both sendTransactionHash and receiveTransactionHash are present.
WEBHOOK
Authorizations
API key sent in the Authorization header.
Headers
HMAC-SHA256 signature: sha256={hex}. Computed over the canonicalized (RFC 8785) request body using your webhook secret.
Body
application/json
Webhook envelope for swap status changes.
Payload for swap_updated webhooks.
Example:
Response
200
Return any 2xx to acknowledge receipt.