> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fiddler.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# GoogleADKInstrumentor

> OpenTelemetry instrumentor for Google ADK agents.

OpenTelemetry instrumentor for Google ADK (Agent Development Kit) agents.

This instrumentor sets up an isolated Fiddler tracing pipeline via
`FiddlerClient` (provider, processor, exporter) and promotes it to the
global tracer provider so ADK's `gcp.vertex.agent` tracer resolves to it.

The SDK operates in standalone mode -- it does not interact with
customer-configured tracers or providers.

## Example

```python theme={null}
from fiddler_otel import FiddlerClient
from fiddler_adk import GoogleADKInstrumentor

client = FiddlerClient(
    api_key="YOUR_KEY",
    application_id="YOUR_APP_UUID",
    url="https://your-instance.com",
)

# Enable instrumentation
instrumentor = GoogleADKInstrumentor(client)
instrumentor.instrument()

# All ADK agents created after this point are automatically traced
```

## Parameters

<ParamField path="client" type="FiddlerClient" required={true}>
  FiddlerClient instance that owns the tracing pipeline (tracer, provider,
  processor, exporter). The client's provider is promoted to global so ADK's
  tracer resolves to it.
</ParamField>

## instrument()

Enable instrumentation. Sets up the tracer provider and adds the
`ADKSpanProcessor` for session-ID propagation.

```python theme={null}
instrumentor.instrument()
```

### Returns

<ResponseField type="None">
  No return value. After calling, all ADK agents will be traced.
</ResponseField>

## uninstrument()

Disable instrumentation.

The tracer provider wiring is left in place: OpenTelemetry does not support
unsetting the global provider or removing span processors. Spans continue
to be exported until the client is shut down.

```python theme={null}
instrumentor.uninstrument()
```

### Returns

<ResponseField type="None">
  No return value.
</ResponseField>

## instrumentation\_dependencies()

Return the list of packages required for instrumentation.

### Returns

<ResponseField type="Collection[str]">
  Collection of required package names (includes `google-adk`).
</ResponseField>