Any additional value in the payload of an event which is not an attribute (see Attributes) is assumed to be a data interface, where the key is the canonical interface short name, and the value is the data expected by the interface (usually a dictionary). Interfaces are used in a variety of ways including storing stacktraces, HTTP request information, and other metadata.

For the most part, interfaces are an evolving part of Sentry. Like with attributes, SDKs are expected to assume that more interfaces will be added at any point in the future.

Core Data