The scarce resource is the per-IP timedtext caption fetch (ADR-014); the pilot's candidate set was mostly Shorts/clips/livestreams, each burning a fetch (a "none" result is a completed fetch — it costs budget even when it yields nothing). NewVideos now enriches candidates with one cheap Data API videos.list call (contentDetails.duration + snippet.liveBroadcastContent — the quota API, a DIFFERENT limit from the timedtext 429) and drops, before returning: videos shorter than TAPIR_MIN_VIDEO_SECONDS (default 60) and any live/upcoming broadcast. Dropped videos are never persisted, so the list declutters too. Degrade-open: MinVideoSeconds=0 disables it (no quota call); a videos.list error returns candidates unfiltered so discovery never breaks on a metadata hiccup. The paste-a-URL path (VideoByID) is not filtered — an explicit request is honoured. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>