kill-scale-rules
Installation
SKILL.md
Kill Criteria & Scaling Rules
Most teams kill too early (acting on noise) or scale too aggressively (the algorithm can't keep up). These thresholds are calibrated so you act on signal, not noise.
Kill Criteria — minimum data required BEFORE killing
| Timeframe | Kill if | Min data |
|---|---|---|
| 24 hours | Hook rate < 15% | 5K+ impressions |
| 48 hours | CTR < 0.5% | 2K+ impressions |
| 3 days | CPA > 2x target | $50+ spend or 1K+ clicks |
| 5 days | No conversions | 3x target CPA in spend |
| 7 days | CPA trending up 3 consecutive days | Statistically significant data |
| 14 days | CPA 1.5x above target with no improvement | Full test cycle complete |
Never kill before minimum data. Bad decisions from small samples cost more than the extra test spend. If a creative has 800 impressions and 2 clicks, you don't have enough signal to conclude anything — wait.