At last, the Reports service has come to the Yandex.Direct API.
You can find a description of the parameters and instructions on how to use them in the technical documentation. Several new report types, from statistics for individual ads to full account summaries, are now available. You can even get statistics for search queries. In addition, CUSTOM_REPORT allows you to choose any combination of fields and criteria to make your own customized report.
Please send any questions or feedback you have through the feedback form.
Good luck with your campaigns!