06/30/2024(legacy) but currently using Beta https://developers.google.com/search-ads/reporting
Refresh Time (CST)
Alli Data Library
Once you have an account with Doubleclick Search (Google Search ads 360) access, simply click the "Request Doubleclick Search Access" button.
This will lead to a page to select your Google account
The next step is to select an Agency ID and an Advertiser ID for the account you would like to query.
You can then select the report type and currency you would like the report in
Report Types (Columns)
This is the list of all report types available through the API, each has a list of columns available to it.
Behavior: Attribute = Dimension
Behavior: Metrics = Metric