> ## Documentation Index
> Fetch the complete documentation index at: /llms.txt
> Use this file to discover all available pages before exploring further.

# Discovery & Engagement Overview

> SDK surfaces for feeds, search, notification tray, and discovery-driven engagement.

Discovery and engagement APIs help users find content, communities, and activity updates. Use this overview to choose between feed retrieval, intelligent search, and notification tray APIs.

> [card] [Feeds](/social-plus-sdk/social/discovery-engagement/feed/overview.md)
>
> Personalized For You feed, chronological global feed, custom-ranking global feed, and per-owner feeds.

> [card] [Intelligent Search](/social-plus-sdk/social/discovery-engagement/search/overview.md)
>
> Search posts and communities through SDK-supported semantic search surfaces.

> [card] [Notification Tray](/social-plus-sdk/social/discovery-engagement/notifications/overview.md)
>
> Retrieve tray items, item status, tray seen status, and notification event metadata.

> [card] [Reactions & Mentions](/social-plus-sdk/core-concepts/content-handling/reactions.md)
>
> Add engagement affordances on posts, comments, stories, and other supported content.

## Choose The Right Surface

| Goal | Use |
| - | - |
| Give each user a personalized discovery tab | [For You Feed](/social-plus-sdk/social/discovery-engagement/feed/for-you-feed.md) |
| Build a real-time, newest-first feed | [Global Feed](/social-plus-sdk/social/discovery-engagement/feed/global-feed.md) |
| Surface globally what people engage with | [Custom-Ranking Global Feed](/social-plus-sdk/social/discovery-engagement/feed/custom-ranking.md) |
| Search communities by meaning or keyword | [Intelligent Search Community](/social-plus-sdk/social/discovery-engagement/search/intelligent-search-community.md) |
| Search posts or hashtags | [Intelligent Search Post](/social-plus-sdk/social/discovery-engagement/search/intelligent-search-post.md) |
| Show notifications in-app | [Notification Items](/social-plus-sdk/social/discovery-engagement/notifications/notification-items.md) |
| Track tray seen/unseen state | [Notification Tray Status](/social-plus-sdk/social/discovery-engagement/notifications/notification-tray-status.md) |

> [!NOTE]
>
> Platform coverage varies by surface. Each linked page includes the platform-specific SDK availability and code examples for that feature.

## Related Topics

> [card] [Feeds & Timelines](/social-plus-sdk/social/discovery-engagement/feed/overview.md)
>
> Compare the For You, global, and custom-ranking feeds.

> [card] [Search Overview](/social-plus-sdk/social/discovery-engagement/search/overview.md)
>
> Compare post and community search options.

> [card] [Notification Overview](/social-plus-sdk/social/discovery-engagement/notifications/overview.md)
>
> Build notification tray experiences.

> [card] [Content Sharing](/social-plus-sdk/social/content-management/content-sharing.md)
>
> Share content into feeds and engagement flows.


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