Architecture

OpenCode (@devtheops/opencode-plugin-otel)
        │ OTLP (metrics, logs, traces)
        ▼
OpenTelemetry Collector
        │
        ├──────────────────┬──────────────────┐
        ▼                  ▼                  ▼
  Prometheus           Loki               Tempo
(opencode_* metrics) (structured logs) (LLM + tool traces)
        │                  │                  │
        └──────────────────┴──────────────────┘
                           │
                           ▼
           Grafana (dashboards) + Trace Explorer (waterfall UI)

Service	Purpose	Port	UI
OTel Collector	Metrics/logs/traces ingestion	4317 (gRPC), 4318 (HTTP)	—
Prometheus	Metrics storage	9090	http://localhost:9090
Loki	Log aggregation	3100	— (query via Grafana Explore)
Tempo	Trace storage	3200	http://localhost:3200
Trace Explorer	React/FastAPI waterfall SPA	8060	http://localhost:8060
Grafana	Dashboards	3000	http://localhost:3000