Anthropic Observability Overview Instrument Claude API calls with structured logging, Prometheus metrics, and cost tracking. Every API response includes data and rate limit headers — capture these for dashboards and alerting. Structured Logging Prometheus Metrics Key Metrics Dashboard | Metric | Description | Alert Threshold | |--------|-------------|-----------------| | | Error count | 5% of total | | p99 | Tail latency | 10s | | daily | Daily spend | 80% budget | | | RPM headroom | < 10% remaining | | rate | Output throughput | Spike detection | Usage API (Server-Side) Error Handling | Obse…