List the Serato libraries this server can see, with their version, schema and locations. Paths here are NOT redacted: copy one into --library to pin the server to it.

List the crates in the Serato Library space, with their display path and how many distinct tracks each holds. Only crates in that space are listed: smart crates, space roots and Serato's other internal spaces (such as the Prepare panel) are excluded.

Search the Serato library. Free text q matches every whitespace-separated token against title, artist, album, genre and comments. Tonality is Camelot (8A); tracks whose key Serato itself could not parse are included, and key_source says where each key came from. bpm.around cannot be combined with bpm.min/bpm.max. key.compatible_with expands to the four mixable cells of the wheel. rating is a 0 to 1 scale, not 0 to 5 stars. Sort is one of bpm, added, artist, title, rating, relevance with an optional :asc/:desc; relevance needs a q. Default fields: id, artist, title, bpm, key, key_source, genre, rating, length. Paths are redacted to ~.

Fetch tracks by the ids search_tracks returned. Unknown ids come back in missing rather than being dropped silently, and found is in the order the ids were given. Default fields: id, artist, title, bpm, key, key_source, genre, rating, length. Paths are redacted to ~.

List the tracks of one crate, in the crate's own order -- the order the DJ arranged, not the order they were added to the library. Only crates in the Serato Library space can be given. Give the crate by id or by exact name; an unknown name comes back with the list of names that exist. Default fields: id, artist, title, bpm, key, key_source, genre, rating, length. Paths are redacted to ~.

Diagnose the library. All checks run by default: missing_bpm, missing_key, key_unreadable_by_serato, stale, not_in_any_crate, streaming_only, duplicates, broken_paths. broken_paths reads Serato's own missing flag by default and ALSO walks the filesystem with check_filesystem: true -- opt-in because a stat against a disconnected drive blocks for seconds. Each check reports a count and up to 10 example track ids; duplicates reports groups instead, since which track duplicates which is the actionable part. missing_key counts tracks with no key at all, while key_unreadable_by_serato counts tracks whose key this server can read but Serato itself cannot display.