Group By

Recursive filter: {"<field path>": {"<operator>": value}}, {"and": [filter, ...]}, or {"or": [filter, ...]}. Each node has exactly one key and each field condition exactly one operator. Groups must be nonempty; use an explicit and for multiple conditions. Omit the filter, use null, or use {} for no filtering; {} is not allowed inside a group. Discover model fields, types and relations through GET /instances/{instance_id}/schema (MCP: get_schema) before filtering unknown fields. Dotted paths support up to two relation hops; the second must be to-one. count_* operators apply to first-hop relation paths such as runs.id. Value types must match the selected field; JSON paths require scalar values and use isnull for null checks. JSON membership lists cannot contain null. Examples use different models; only use fields present in the selected model's schema.