IP restrictions
Each key can allow up to ten exact IPv4 or IPv6 addresses. Requests from other addresses are rejected before endpoint processing.Rate limits
Responses includeX-RateLimit-Limit, X-RateLimit-Remaining, and X-RateLimit-Reset. Limited requests return 429 and a Retry-After header.
Server environments
The API reference currently targets the public NorthFond backend athttps://payment.gideondevrel.xyz. Sandbox and live access are separated by the credential prefix and the environment attached to the credential, not by putting a key in the URL.