Gateways
Vault a payment method (reserved, not implemented)
Reserved endpoint for vaulting a payment method against the gateway.
Not implemented: every request returns 501 with an error envelope and
performs no work. Authentication is still enforced, so 401/403
apply before the 501.
POST
Vault a payment method (reserved, not implemented)
Authorizations
Merchant API key (fp_live_* for live, fp_test_* for sandbox) or an
admin-tier JWT (company admin or root admin). Non-admin JWTs are
rejected with 403; live API keys additionally require the merchant's
API access to be enabled.
Path Parameters
Gateway slug