List all available feature extractors grouped by category
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
Successful Response
The origin/source of this extractor: 'builtin' (shipped with Mixpeek), 'custom' (user-created), or 'community' (marketplace).
builtin, custom, community Credit cost information for this extractor
Output fields that uniquely identify each document within a source object. Enables idempotent reprocessing: rerunning a batch produces the same document IDs, so existing documents are updated instead of creating duplicates. Works with bucket unique_key to enable fully deterministic document IDs. Empty list means single-output extractor (one document per source). Read-only (set by extractor).
["start_time", "end_time"]["chunk_index"][]