You can see how your app is using the Routes Preferred API by looking at your project's usage reports.
Accessing usage reports
Follow this procedure to access usage reports.
- Visit the Google Cloud Console.
- Select your Routes Preferred API project.
- At the bottom of the APIs chart, click Go to APIs overview.
- At the bottom of the Traffic chart, click Routes Preferred API.
- Beneath the chart titled Traffic by response code, click View metrics.
The Metrics reports page appears.