# Metrics Library Agent Charter ## Mission - Provide KPI models and aggregation services for quality and operational metrics. ## Responsibilities - Keep KPI calculations deterministic and time-zone safe. - Normalize labels and states to avoid drift in dashboards. ## Required Reading - docs/07_HIGH_LEVEL_ARCHITECTURE.md - docs/modules/platform/architecture-overview.md ## Working Directory & Scope - Primary: src/__Libraries/StellaOps.Metrics ## Testing Expectations - Add tests for KPI collection edge cases and trend calculations. - Use deterministic time providers in tests. ## Working Agreement - Update sprint status in docs/implplan/SPRINT_*.md and local TASKS.md. - Keep outputs deterministic and avoid non-ASCII logs.