OptionalconceptsConcept-layer (facet taxonomy) configuration. Omitted ⇒ facets: 'auto'.
When true, ingestion extracts an entity/relationship graph and searchMode:'graph' becomes available.
OptionalentityOptional domain taxonomy hint (entity types) injected into the extraction prompt.
OptionalextractionChat model used for per-chunk entity/relationship extraction. Defaults to the server's graph model.
Per-knowledge-base GraphRAG configuration. Opt-in and mutable (unlike
embeddingModel/vectorDbType); only honored forvectorDbType:'mongoAtlas'KBs. Enabling it on a KB that already has content requires a graph backfill (therebuildGraphendpoint).