performance-auditlisted

# Skill: Performance Audit Used by all three roles — `budget-steward`, `creative-manager`, and `account-sentinel` — to reason from the same metrics. Defines the numbers the roles' authority blocks reference. **CPA floor**: account's target CPA × 1.5. A campaign below this floor is flagged. **Frequency ceiling**: 3.0 impressions per unique per 7-day window. Above this, creative fatigue is declared. ## Workflow 1. Call `meta-ads.get_campaigns` — returns all active campaigns and their spend/result data. 2. For each campaign, compute rolling 3-day CPA = total spend / total conversions over the last 72 hours. 3. Compare CPA to floor and frequency to ceiling. 4. Write a structured audit report to `memory/audit-{date}.json`. 5. Return: list of campaigns in each state — healthy, below-cpa-floor, above-frequency-ceiling, stale-active. ## Supporting Files - `references/metric-definitions.md` — canonical formulas for CPA, CTR delta, frequency