Thank you for reaching out to the Google Ads API support team.
Please note that there are no minimum thresholds associated with reporting granularity from all the reports when retrieving data using the Google Ads API. Even if there is only one impression, the data can still be retrieved via the API. You can use the
search or
searchStream methods in making the API calls while retrieving the data. Additionally, you can utilize the
Google Ads Query Builder and
Query Validator to build and validate the queries for retrieving the data from the Google Ads API.