# Interceptors - Go SDK

> For the complete documentation index, see [llms.txt](https://docs.temporal.io/llms.txt).
> Any documentation page is available as raw Markdown by appending `.md` to its URL.

Interceptors wrap inbound and outbound Temporal calls so you can apply shared behavior such as tracing, logging, or
authorization. See [Interceptors](/encyclopedia/interceptors) for the inbound vs outbound model.

Register them on the Client (`client.Options.Interceptors`), the Worker (`worker.Options.Interceptors`), or both. Embed
`ClientInterceptorBase` / `WorkerInterceptorBase` and override only the methods you need. Full API:
[`go.temporal.io/sdk/interceptor`](https://pkg.go.dev/go.temporal.io/sdk/interceptor).

> **⚠️ Warning:**
> Workflow interceptors and replay
>
> Workflow interceptor methods also run during [replay](/develop/go/best-practices/testing-suite#replay). Use replay-safe
> APIs for logging, randomness, and time.
>

## Related

- [Observability - Tracing](/develop/go/platform/observability#tracing)
- [Context Propagation](/develop/go/best-practices/context-propagation)
- [Logging Interceptor sample](https://github.com/temporalio/samples-go/tree/main/logger-interceptor)
- [Plugins - Interceptors](/develop/plugins-guide#interceptors)