API requirements when working with Instant Payments.
Note that all requests must:
- Be sent via the HTTPS protocol.
- Pass a specific API Key, unique to each institution, for authentication.
- Originate from an allowed IP address (the allowed IP addresses will be configured for you when you register for the service).
- Include (at a minimum) the mandatory fields required for the specific request that is being made.
Note: Our API is backward-compatible. For more details see Versioning and Backward Compatibility under the Product Overview section.