1. General Provisions
1.1. Terms and Definitions
Service shall mean Yandex.Disk API service that is an application programming interface enabling a developer to integrate Yandex.Disk functionality into its own Software Product;
Data shall mean data on the performance of Yandex.Disk to be displayed via the Service to the Service Users and End Users including, but not limited to user data, Yandex.Disk content summary and files and folders stored on Yandex.Disk of the Service User of End User;
End User shall mean an individual having Yandex services account and using Yandex.Disk service;
User shall mean a developer using the Service to integrate Yandex.Disk functionality into its own Software Product;
Software Product shall include computer programs, mobile applications and web-based services of the User created with the use of the Service;
OAuth Token shall mean a key to be obtained by the User at https://oauth.yandex.ru giving access to the Service functions within the User Software Product.
User Agreement for Yandex Services available at https://yandex.ru/legal/rules;
Yandex Search Engine License available at https://yandex.ru/legal/termsofuse;
Yandex.Disk SDK License Agreement for WebDAV API available at https://yandex.ru/legal/sdk_agreement.
2. Use of the Service
2.1. To get access to the Service, the User must register according to the prescribed procedure and obtain the OAuth Token. Yandex may, at its own diskretion, refuse access to the Service without giving reasons. The User may not use programs, devices or other means to obtain the OAuth Token automatically or otherwise in violation of the procedure established by Yandex.
2.2. In case of excess of the maximum Service hits – 40 (forty) requests per second the Service access may be restricted or discontinued.
2.3. The User may use the Data and functions available via the Service only within the scope of the functionality provided by the Service.
2.4. When using the Service, the User shall notify of the use of Yandex technology by:
2.4.1 inclusion of information regarding the use of Yandex technology into the description of the User Software Product.
2.4.2 placement of Yandex.Disk logo on the description of the User Software Product and interface elements of the User Software Product enabling redirection of the End Users to Yandex.Disk.
2.5. It is unacceptable to use Yandex.Disk name and Yandex.Disk logo in the following cases:
2.5.1 Yandex.Disk name and similar sounding names may not be used as part of the names of the User Software Products.
2.5.2 Yandex.Disk logo and similar logos may not be used as logos for the User Software Products.
Yandex.Disk logo and name may be used in advertising materials related to the User Software Products. When using Yandex.Disk logo or name in the User Software Products or advertising materials related thereto, such elements should not be smaller in size than similar elements of the other services;
Any usage of Yandex.Disk identity style, including usage of logo, allowed or prescribed by this document, shall be performed in accordance with the rules, permanently avaliable at https://yadi.sk/i/Juo2pxkbhYc4r.
2.6 When using the Service, the User may not delete, hide or modify any trademarks, logos, links or other references to Yandex or other persons contained in the Service or obtained via the Service, as well as other notices and/or information provided by the Service.
2.7. The User may not change, decompile and/or modify in any way a source code received via the Service.
2.8. The User may not save, change, delete or otherwise process the Data (except for the User’s personal files stored in Yandex.Disk) excluding the End User Data for which the End User has given the User its consent to the actions as aforesaid.
2.9. The User may not use the Service to create any web-based service or computer program or for any other purposes, if such use results in violation of the Laws, documents listed in clause 1.2 above and/or any third-party rights and lawful interests.
2.10. The User is hereby informed and agrees that the Service can receive and transmit to Yandex, for the purpose of assessing the performance of the Service, data regarding the number of the End Users of the User Software Products using the Service and about the operations performed by the End Users within such User Software Products.
2.11. Yandex reserves its right to modify, improve or update the Service at any time without any prior notice to the User. Upon the next stable release, Yandex shall announce such release on the Service web pages. Once the new version of the Service is released, Yandex shall no longer guarantee stable and long-sustained operation of its older versions. If the User does not agree to use the updated version of the Service, it may either continue to use the older version of the Service at its own risk or stop using the Service by removing the relevant code from the User Software Product(s).
2.12. Yandex reserves its right to include advertising materials, as it thinks fit, into the Data. When using the Data, the User may not delete, change or hide such advertising materials without the prior consent of Yandex.
3. Intellectual Property Rights
3.2. By using the Service, the User shall authorize Yandex to use logos, trademarks and/or trade names of the User, its Software Products and/or website for information, advertising and marketing purposes without any further consent of the User and without any fee payable to the User for such use.
4.1. The Service (including the Data) shall be provided by Yandex on an as is basis. Yandex shall not guarantee that the Service and Data will satisfy the purposes and expectations of the User, that the Service and its individual elements and functions will demonstrate uninterrupted and error-free performance, and that the Data will be true, accurate, complete and up-to-date. Yandex shall not guarantee uninterrupted and error-free performance of third-party software products and solutions (including libraries) recommended to be used in conjunction with the Service according to specifications and other documents related to its use.
4.2. The User shall be solely and fully responsible for the use and safety of its OAuth Token. The User may not obtain the OAuth Token for any third party or transfer or provide it to any third party. Yandex shall not be liable for any unauthorized third-party use of the OAuth Token. Any actions performed within the Service through the User’s OAuth Token shall be deemed performed by such User.
5. Final Provisions
5.2. Any and all questions and claims related to the use/unavailability of the Service shall be sent via the form avaliable at https://feedback2.yandex.ru/disk/api.
Date of publication: 29.05.2015
Previous version of the document: https://yandex.ru/legal/disk_api/04062014