Optionalartifact_Base64-encoded serialized model artifact (mutually exclusive with artifact_ref).
Optionalartifact_Shared-storage handle to the model artifact.
Ordered feature schema describing each input column.
Frozen fitted preprocessing parameters that travel with the model.
1..N records to score, each a feature-name → value map.
POST /predictrequest body. Supplies the model artifact (inline or by ref), the frozen fitted preprocessing, the feature schema, and 1..N rows to score. The sidecar only applies the frozen params — it never re-fits (plan §6.2).