# BFF Diagnostics Endpoint Extensibility

The BFF diagnostics endpoint can be customized by implementing the `IDiagnosticsEndpoint`.

## Request Processing

[Section titled âRequest Processingâ](#request-processing)

`ProcessRequestAsync` is the top-level function called in the endpoint service and can be used to add arbitrary logic to the endpoint.

For example, you could take whatever actions you need before normal processing of the request like this:

```csharp
public Task ProcessRequestAsync(HttpContext context, CancellationToken ct)
{
    // Custom logic here
}
```
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