We have an amazing dashboard where you can see your account overview.
You can see the count of total API hits, count of success API hits, count of failed API hits and total API hits till date i.e total API usage.
To get old details, click on date filter and select respective timestamp. You will get counts of selected timestamp.
Select project from the option list to get project-specific API counts. Default all project APIs counts are shown.
You can also see, recent 5 API runs and recent 5 failed API runs.
Also, current monthly usage is shown on the header where data usage and request count have been shown.