searchable_text
Enrichment metadata is concatenated into every chunk before BM25 indexing. BM25 over that enriched representation directly matches exact terms in the summary and key questions — not just the raw chunk text.
TagDefinitions
Dataset-level schema governance. Define which fields are extracted, their value types (string, number, boolean, multi-value), allowed values, and projection policy: include → searchable_text + index, metadata_only → index payload only, exclude → stored but not indexed.
DataSlices
Named pre-set filter views over a dataset. Constrain an agent's search to a governed subset without re-ingesting — create a slice with a filter expression, then search within it.
Hybrid RRF
Independent BM25 and dense search candidates are fused with Reciprocal Rank Fusion. No alpha weights to tune. Vector, keyword, and hybrid modes are all available.