Retrieve auction insights for campaigns or ad groups for a specified date range.
Args: customer_id: The Google Ads customer ID login_customer_id: Optional manager account ID campaign_id: Optional campaign ID filter ad_group_id: Optional ad group ID filter (takes precedence over campaign_id if both provided) start_date (str): Start date for the data range (YYYY-MM-DD). Defaults to 30 days ago. end_date (str): End date for the data range (YYYY-MM-DD). Defaults to today. oauth2_token: OAuth2 token for authentication
Returns: List of auction insights with competitor metrics
The access token received from the authorization server in the OAuth 2.0 flow.