**Note:** [Complying with the YouTube Developer Policies](https://developers.google.com/youtube/terms/developer-policies-guide) provides guidance and examples to help you ensure that your API clients follow specific portions of the YouTube API Services [Terms](https://developers.google.com/youtube/terms/api-services-terms-of-service) and [Policies](https://developers.google.com/youtube/terms/developer-policies) (API TOS). The guide offers insight into how YouTube enforces certain aspects of the API TOS, but it does not replace any existing documents. The [YouTube API Services Terms of Service](https://developers.google.com/youtube/terms/api-services-terms-of-service) (the "Terms") state (in Section 14) that when YouTube intends to make backward-incompatible changes to YouTube API services, YouTube will announce those changes and try to continue to maintain the software code for six months after the announcement. This page identifies the **Subject API Services** referenced in section 14.3 (Special Terms) of the Terms and explains how that section of the Terms affects actual deprecation dates. Prior to February 10, 2017, which is the effective date of the current Terms, the Subject API Services had been subject to a one-year deprecation policy under the previous set of Terms. To honor that policy, the Subject API Services are, temporarily, subject to different deprecation rules than other services. ## Understanding deprecation dates In the event of backward-incompatible changes to Subject API Services, YouTube will use reasonable efforts to maintain code until at least February 10, 2018, which is one year after these Terms became effective. For other services, YouTube will try to continue to maintain the software code for six months from the date those changes are announced. ### Exemptions Some features of Subject API Services are not subject to the rules defined in Section 14.3 of the Terms because those features were also not subject to the deprecation policy defined under the prior set of Terms. Those features are identified as **exemptions** in the following list of subject services. When an exemption applies to an `object` property, it also applies to any of that property's child properties. In addition, the exemption applies to the ability to retrieve, set, modify, or delete values of the property or its child properties as well as to the property values themselves. ## Subject API Services The following sections define the Subject API Services. For completeness, these sections also identify fully deprecated API services. Those fully deprecated services are not covered under the Terms. ### YouTube Data API, v3 - [Documentation](https://developers.google.com/youtube/v3) - Exemptions - The following `channel` resource properties: - [`brandingSettings.channel.profileColor`](https://developers.google.com/youtube/v3/docs/channels#brandingSettings.channel.profileColor) - [`brandingSettings.hints`](https://developers.google.com/youtube/v3/docs/channels#brandingSettings.hints) - [`brandingSettings.image.watchIconImageUrl`](https://developers.google.com/youtube/v3/docs/channels#brandingSettings.image.watchIconImageUrl) - [`brandingSettings.watch`](https://developers.google.com/youtube/v3/docs/channels#brandingSettings.watch) - [`contentDetails.relatedPlaylists`](https://developers.google.com/youtube/v3/docs/channels#contentDetails.relatedPlaylists) - [`contentOwnerDetails`](https://developers.google.com/youtube/v3/docs/channels#contentOwnerDetails) - [`invideoPromotion`](https://developers.google.com/youtube/v3/docs/channels#invideoPromotion) - [`statistics.commentCount`](https://developers.google.com/youtube/v3/docs/channels#statistics.commentCount) - The [`guideCategory`](https://developers.google.com/youtube/v3/docs/guideCategories) resource and its methods. - The `search.list` method's [`safeSearch`](https://developers.google.com/youtube/v3/docs/search/list#safeSearch) parameter and its values. - The `video` resource's [`status.publishAt`](https://developers.google.com/youtube/v3/docs/videos#status.publishAt) property. ### YouTube IFrame Player API - [Documentation](https://developers.google.com/youtube/iframe_api_reference) ### YouTube Reporting API - [Documentation](https://developers.google.com/youtube/reporting) - Exemptions - Non-core dimensions. (See the [dimension](https://developers.google.com/youtube/reporting/v1/reports/dimensions) definitions to determine whether individual dimensions are considered core dimensions.) - Non-core metrics. (See the [metric](https://developers.google.com/youtube/reporting/v1/reports/metrics) definitions to determine whether individual metrics are considered core metrics.) ### YouTube Analytics API - [Documentation](https://developers.google.com/youtube/analytics) - Exemptions - Non-core dimensions. (See the [dimension](https://developers.google.com/youtube/analytics/v1/dimsmets/dims) definitions to determine whether individual dimensions are considered core dimensions.) - Non-core metrics. (See the [metric](https://developers.google.com/youtube/analytics/v1/dimsmets/mets) definitions to determine whether individual metrics are considered core metrics.) ## Fully deprecated API Services The following API services are fully deprecated. They were subject to the deprecation policy set forth in the Original Terms and the deprecation period has ended. YouTube is neither obligated to announce breaking changes to these services nor to continue supporting them: ### YouTube Data API, v2 - [Deprecation announcement](http://youtube-eng.blogspot.com/2014/03/committing-to-youtube-data-api-v3_4.html) (March 4, 2014) - [Documentation](https://developers.google.com/youtube/2.0/developers_guide_protocol) - Migration path: [YouTube Data API, v3](https://developers.google.com/youtube/v3/getting-started) ### YouTube Flash Player API - [Deprecation announcement](http://youtube-eng.blogspot.com/2015/01/youtube-now-defaults-to-html5_27.html) (January 27, 2015) - Migration path: [IFrame Player API](https://developers.google.com/youtube/iframe_api_reference) ### YouTube JavaScript Player API - [Deprecation announcement](http://youtube-eng.blogspot.com/2015/01/youtube-now-defaults-to-html5_27.html) (January 27, 2015) - Migration path: [IFrame Player API](https://developers.google.com/youtube/iframe_api_reference)