v66

latestOpenAPI 3.1.0Apache 2.0raw.githubusercontent.com2026-08-042174421.1 MB
Card Authorizations

Respond to Authorization Challenge

Card program's response to Authorization Challenge. Programs that have Authorization Challenges configured as Out of Band receive a card_authorization.challenge webhook when an authorization attempt triggers a challenge. The card program should respond using this endpoint after the cardholder completes the challenge.

post/v1/card_authorizations/{event_token}/challenge_response

Path parameters

event_tokenstring uuid required

Globally unique identifier for the authorization event that triggered the challenge

Request body

response'APPROVE' | 'DECLINE' required

Whether the cardholder has approved or declined the issued challenge

Response

Challenge response recorded