Connectum API Reference / @connectum/otel / client-interceptor

client-interceptor

ConnectRPC OpenTelemetry client interceptor

Creates a ConnectRPC interceptor that instruments outgoing RPC calls with OpenTelemetry tracing and metrics following semantic conventions.

Key differences from the server interceptor:

• Uses propagation.inject() to propagate trace context to outgoing requests
• Uses SpanKind.CLIENT instead of SpanKind.SERVER
• Uses rpc.client.* metrics instead of rpc.server.*
• serverAddress is REQUIRED (target server, not local hostname)
• No trustRemote option (client always creates spans in active context)

See

• https://opentelemetry.io/docs/specs/semconv/rpc/connect-rpc/
• https://opentelemetry.io/docs/specs/semconv/rpc/rpc-metrics/

Functions

• createOtelClientInterceptor