OpenTelemetry is a set of standards and tools for collecting telemetry and sending it to a monitoring service, where you can explore it in dashboards.
FastAPI provides OpenTelemetry support by default for HTTP request traces, metrics, and logs. WebSocket connections also provide traces and logs. To see that data, configure a monitoring service to receive it.
When you deploy to FastAPI Cloud with fastapi[standard], metrics work automatically. You don't have to configure anything else.
On Pro plans, you can view request counts, error rates, and response times in the Metrics dashboard.
See the official website.
