OptionaldestinationBacking-model category. Determines which oneof variant is populated.
OptionalisTrue when the destination's backing UC entity (MODEL for foundation-model destinations, MODEL_PROVIDER_SERVICE for external destinations) has been deleted but the destination row still references it. The dangling destination is surfaced (not silently dropped) so callers can see the broken routing. Inference traffic through this destination fails closed (BAD_REQUEST / FAILED_PRECONDITION).
OptionalnameUser-facing label for this destination, used in routing references.
OptionaltrafficShare of traffic sent to this destination, 0-100. Optional on fallback destinations; see FallbackConfig.
OptionaltypeDestination-type-specific configuration.
A destination the model service can route traffic to. Exactly one of the per-type configs inside
type_configmust be set, and it must matchdestination_type.