Cards
Register a cardholder
POST
/cardholdersScope
cardholders:writeAuth Bearer keyIdempotentHeaders
Idempotency-KeystringrequiredRetrying with the same key and payload replays the original response.
Responses
201Cardholder
Errors
Errors use RFC 9457 problem details. Branch on code, and log request_id.
400Bad request401Unauthenticated403Forbidden409Idempotency conflict422Validation error429Rate limitedcURL
curl -X POST "https://business.boundlesspay.com/api/public/v1/cardholders" \ -H "Authorization: Bearer $BOUNDLESS_API_KEY" \ -H "Idempotency-Key: $(uuidgen)"