A 200 tags response whose models array contains entries without a readable string name is unobservable for the embed model (an unnamed entry could be it) — never absent. Positive matches still count amid malformed siblings; an empty, fully readable list still proves absence. Co-Authored-By: Claude Fable 5 <[email protected]> Claude-Session: https://claude.ai/code/session_012T1XF1ZyJL7KW8AVRUJjiD