You can attach user ids to traces in Langtrace by simply wrapping your code with the withAdditionalAttributes for typescript or inject_additional_attributes function for python. This will add the specified attributes to the trace spans. Make sure to pass the user id as a key-value pair to the function.

The key should be user_id and the value should be the user id. User ids should be unique for each user.

DO NOT USE this the Python decorator - with_additional_attributes. It will be deprecated soon. Please use inject_additional_attributes function instead.

Now, you can filter and group traces based on the user id. This can be useful for debugging and monitoring purposes.

userid