Query the messages table by content and/or span-level filters.
Scans the messages table (one row per message occurrence, populated by an MV from spans) and returns matching span-level hits. Full-text search sets query; structured retrieval (e.g. all messages in a trace) leaves query empty and uses the filters below. The caller groups by conversation for the response shape.
Successful Response
Response from a full-text search across agent messages.