> ## Documentation Index > Fetch the complete documentation index at: https://devdocs.xbox.com/llms.txt > Use this file to discover all available pages before exploring further. # Daily API Usage Details Report > Overview of the PlayFab Daily API Usage Details report, showing hourly call counts, errors, response times, and payload sizes per API for your title. The daily API Usage Details report contains statistics for each API call, aggregated by the API name on an hourly basis. The table contains the following metrics: * **Total API Calls**, **Total Errors** and **Total Successful** - These columns allow you to check the overall usage and stability of your API calls. * **Average Response Time**, **Total Response Time**, **Average Received bytes**, **Total Received bytes**, **Average Sent bytes**, and **Total Sent** (**MB**) - These columns are useful for monitoring system performance, as well as optimizing some user-defined, heavy-duty function calls (for example, CloudScript). Daily API usage details report table If you experience lag spikes in your application while executing API calls, you can refer to this report to track down the underlying cause. For example - using the report, you will be able to check whether the data was too large, or that a handler worked inefficiently. You can further utilize the report to tune the performance of CloudScript execution by adjusting its behavior and associated data. ## Populating the report Any API call will be captured and included into this report. Check the [PlayFab API Reference documentation](/services/playfab/api-references) for the list of all API options. ## Related topics - [Reports quickstart](/services/playfab/data-analytics/learn-data/reports/quickstart.md) - [Daily and Monthly CDN Usage Report](/services/playfab/data-analytics/learn-data/reports/daily-and-monthly-cdn-usage-report.md) - [Daily and Monthly Top Spender Report](/services/playfab/data-analytics/learn-data/reports/daily-and-monthly-top-spender-report.md) - [Daily email report](/services/playfab/data-analytics/learn-data/reports/daily-email-report.md) - [Daily Abuse Reports History Report](/services/playfab/data-analytics/learn-data/reports/daily-abuse-reports-history-report.md)