# Calling Langchain object
traces = opik_tracer.created_traces()
print([trace.id for trace in traces])
```

The traces returned by the `created_traces` method are instances of the [`Trace`](https://www.comet.com/docs/opik/python-sdk-reference/Objects/Trace.html#opik.api_objects.trace.Trace) class, which you can use to update the metadata, feedback scores and tags for the traces.

### Accessing the content of logged traces

In order to access the content of logged traces you will need to use the [`Opik.get_trace_content`](https://www.comet.com/docs/opik/python-sdk-reference/Opik.html#opik.Opik.get_trace_content) method:

```python
import opik
from opik.integrations.langchain import OpikTracer
opik_client = opik.Opik()

opik_tracer = OpikTracer()