Reference

Detectors

Every pattern the engine watches for, shown against one channel’s tracked data — what each one looks for, when it can fire, and whether it has matched yet. Described, never prescribed.

Statuses are read from @iamartharrison’s tracked data, through Aug 23, 2026.

Watching82patterns, each gated until the catalog is large enough to read it honestly.

No detectors have matched a pattern in the most recent window.

No detectors are currently in the quiet window.

Not yet on its own line

Watching, but not yet reported on its own line — some patterns report through a shared slot.

detectors
  • Milestones — 2 watching A milestone reached, An emerging signal
  • Trajectory and outliers — 11 watching Where this channel sits against the shared pool, A video tracking off the channel norm, A video's view-curve deviating from its peer norm, Views accelerating, A week-over-week step up, Day-one numbers predicting longer-run reach, Cross-video outlier, A live video sitting outside the channel's day-N cone for its age, Retention and engagement ranking high relative to view mass, A per-metric trajectory consistent across videos, A title pattern correlating with CTR on this channel
  • Discovery and traffic sources — 24 watching A traffic source proportion shifting, Browse / Homepage opening up, Browse / Homepage going quiet, YouTube Search reaching the channel, Suggested Videos lifting, Suggested Videos cliff, Shorts Feed lifting, Shorts Feed cliff, Where views arrive from, over time, Single-source-dominated day, Top-country flipping week-over-week, First External-source views, Channel-wide top traffic source flipping, Per-source typical days-to-activation, A specific video's source activation outside the channel's band, First impressions on a video, A video drawing most traffic from one source, Source mix widening, Source mix narrowing, A source going quiet on a video, A gap in watch time per view across sources, A gap in subs-per-view across sources, A previously-quiet organic source firing again on a video, A video drawing most views from a single country
  • Per-video lifecycle — 11 watching This video's arc, A video gone quiet, Impressions without views, Days from publish to peak, Older videos vs newer videos, CTR rising late in life, Watch time rising late in life, Trend across recent debuts, Channel trend, week over week, Trend across recent videos, A video launched in a weak channel phase performing under the channel median
  • Engagement — 14 watching Two metrics that usually move together pulling apart, A video drawing more engagement per view than the rest of the channel, Comments-per-view well above the channel's band, A trailing-3-day jump in shares on a video, Subscribe rate and reach moving in opposite directions, Subscribers stepping up on a routine view day, Subscribers lost in the trailing two weeks, Audience replacing itself faster than its trailing weeks, How much of last week's audience mix came back, Channel attribution share trending up, Per-video attribution share well above baseline, A sharp drop-off in the retention curve, Mid-video hold versus the channel's own catalog, Where this video differs across the four funnel stages
  • Channel shape — 20 watching Lifetime distribution of views across the catalog, Channel's 5-dimensional state vector outside its 90-day envelope, Recent publishing gap notably longer than the channel's median, How often this channel publishes, Recent 7-day publish count diverging from the prior 7-day count, One or two weekdays consistently outperforming the rest, The catalog shape shifting, A metric outside its usual range, How retention distributes across the catalog, Share of the catalog that went the past week without views, Top-video and quiet-inventory shares trending up together, Share of videos below a view threshold, Share of fitted videos projected quiet within 30 days, A video projected quiet within two weeks, Before / after a title or thumbnail change, How a title or thumbnail change reshuffled traffic sources, How often a video was iterated on, Whether iterations moved the metric, How fast YouTube is testing a video, An impression spike and what followed it