Presets are shorthands for retrieval weights and depth.
  • balanced: default mix of semantic, BM25, recency, priors.
  • factual: boost predicate/entity priors and confidence; lower recency.
  • recent: stronger time decay and event preference.
  • graphy: increase depth for related entities and predicates.
Example: 
{
  "retrieval": {"preset": "factual"},
  "return": {"include_structured_facts": true}
}