Google Business Performance API has a NEW API method that allows fetching multiple `DailyMetrics` in a single API request.
Review the deprecation schedule and instructions to migrate over from v4 reportInsights API method to Google Business Profile Performance API.

Business Performance API

Change log

v1

API Access

The Business Performance API will need to be enabled from the GCP Console. The OAuth scope remains the same.

Endpoint URLs

Endpoints are accessible at https://businessprofileperformance.googleapis.com/v1/ instead of https://mybusiness.googleapis.com/v4/

accounts.locations.reportInsights has been replaced by locations.fetchMultiDailyMetricsTimeSeries that returns DailyMetric for specified metrics.
Introduction of new locations.searchkeywords.impressions.monthly.list that returns monthly breakdown of search keywords

Deprecated endpoints and Objects

Removal of batch calls for multiple listings using locationNames in request body
Removal of accounts.locations.localPosts.reportInsights endpoint
Removal of Metric and MetricOption along with aggregated and breakdown options