# Topic

Topic APIs

## Get Topic Breadcrumb for Article

 - [GET /portals/{portalID}/articles/{articleID}/breadcrumb](https://apidev.egain.com/apis/v4/knowledge/portalmgr/api-bundled/topic/gettopicbreadcrumbforarticle.md): ## Overview
  * Use this API to retrieve the topic breadcrumb for an article in a portal. A breadcrumb shows the hierarchical path from the root topic to the article's primary topic.

## Get Immediate Child Topics

 - [GET /portals/{portalID}/topics/{topicID}](https://apidev.egain.com/apis/v4/knowledge/portalmgr/api-bundled/topic/getchildtopics.md): ## Overview
  The Get Immediate Child Topics API retrieves details about a topic and it's immediate child topics. The $level attribute determines how deep the topic hierarchy should go, or how many child topics of a topic are returned in the response.

## Get All Ancestor Topics

 - [GET /portals/{portalID}/topics/{topicID}/parents](https://apidev.egain.com/apis/v4/knowledge/portalmgr/api-bundled/topic/getancestortopics.md): ## Overview
  The Get All Ancestor Topics API retrieves the hierarchy from the root topic down to the given topic.

## Get All Topics

 - [GET /portals/{portalID}/topics](https://apidev.egain.com/apis/v4/knowledge/portalmgr/api-bundled/topic/getalltopics.md): ## Overview
  The Get All Topics API retrieves the topic tree for a portal. The $level attribute determines how deep the topic hierarchy should go, or how many child topics of a topic are returned in the response.