Zippin Gateway
The Zippin Gateway is Zippin's integration/API framework for its checkout-free store platform — the surface retailers and partners use to connect payment gateways, loyalty and gift providers, campus card systems, inventory systems and POS to a Zippin store, and to pull order, cart and reporting data. Zippin's own retailer documentation describes it as "a standard rest API with a nested JSON payload" that a retailer team can call either for a given date or for change transactions since a point in time. No public API reference, OpenAPI description or developer portal is published: the live host at https://api.getzippin.com answers every /v1/* request with an HTTP 401 authentication_error, so the operation surface is reachable only by Zippin customers and integration partners.