# Epic Links API **(ULTIMATE)** >**Note:** > This endpoint was [introduced](https://gitlab.com/gitlab-org/gitlab/merge_requests/9188) in GitLab 11.8. Manages parent-child [epic relationships](../user/group/epics/index.md#multi-level-child-epics). Every API call to `epic_links` must be authenticated. If a user is not a member of a group and the group is private, a `GET` request on that group will result to a `404` status code. Epics are available only in the [Ultimate/Gold tier](https://about.gitlab.com/pricing/). If the epics feature is not available, a `403` status code will be returned. ## List epics related to a given epic Gets all child epics of an epic. ``` GET /groups/:id/epics/:epic_iid/epics ``` | Attribute | Type | Required | Description | | ---------- | -------------- | -------- | ------------------------------------------------------------------------------------------------------------- | | `id` | integer/string | yes | The ID or [URL-encoded path of the group](README.md#namespaced-path-encoding) owned by the authenticated user | | `epic_iid` | integer | yes | The internal ID of the epic. | ```shell curl --header "PRIVATE-TOKEN: " https://gitlab.example.com/api/v4/groups/1/epics/5/epics/ ``` Example response: ```json [ { "id": 29, "iid": 6, "group_id": 1, "parent_id": 5, "title": "Accusamus iste et ullam ratione voluptatem omnis debitis dolor est.", "description": "Molestias dolorem eos vitae expedita impedit necessitatibus quo voluptatum.", "author": { "id": 10, "name": "Lu Mayer", "username": "kam", "state": "active", "avatar_url": "http://www.gravatar.com/avatar/018729e129a6f31c80a6327a30196823?s=80&d=identicon", "web_url": "http://localhost:3001/kam" }, "start_date": null, "start_date_is_fixed": false, "start_date_fixed": null, "start_date_from_milestones": null, //deprecated in favor of start_date_from_inherited_source "start_date_from_inherited_source": null, "end_date": "2018-07-31", //deprecated in favor of due_date "due_date": "2018-07-31", "due_date_is_fixed": false, "due_date_fixed": null, "due_date_from_milestones": "2018-07-31", //deprecated in favor of start_date_from_inherited_source "due_date_from_inherited_source": "2018-07-31", "created_at": "2018-07-17T13:36:22.770Z", "updated_at": "2018-07-18T12:22:05.239Z", "labels": [] } ] ``` ## Assign a child epic Creates an association between two epics, designating one as the parent epic and the other as the child epic. A parent epic can have multiple child epics. If the new child epic already belonged to another epic, it is unassigned from that previous parent. ``` POST /groups/:id/epics/:epic_iid/epics ``` | Attribute | Type | Required | Description | | --------------- | -------------- | -------- | ------------------------------------------------------------------------------------------------------------------ | | `id` | integer/string | yes | The ID or [URL-encoded path of the group](README.md#namespaced-path-encoding) owned by the authenticated user | | `epic_iid` | integer | yes | The internal ID of the epic. | | `child_epic_id` | integer | yes | The global ID of the child epic. Internal ID can't be used because they can conflict with epics from other groups. | ```shell curl --header POST "PRIVATE-TOKEN: " https://gitlab.example.com/api/v4/groups/1/epics/5/epics/6 ``` Example response: ```json { "id": 6, "iid": 38, "group_id": 1, "parent_id": 5 "title": "Accusamus iste et ullam ratione voluptatem omnis debitis dolor est.", "description": "Molestias dolorem eos vitae expedita impedit necessitatibus quo voluptatum.", "author": { "id": 10, "name": "Lu Mayer", "username": "kam", "state": "active", "avatar_url": "http://www.gravatar.com/avatar/018729e129a6f31c80a6327a30196823?s=80&d=identicon", "web_url": "http://localhost:3001/kam" }, "start_date": null, "start_date_is_fixed": false, "start_date_fixed": null, "start_date_from_milestones": null, //deprecated in favor of start_date_from_inherited_source "start_date_from_inherited_source": null, "end_date": "2018-07-31", //deprecated in favor of due_date "due_date": "2018-07-31", "due_date_is_fixed": false, "due_date_fixed": null, "due_date_from_milestones": "2018-07-31", //deprecated in favor of start_date_from_inherited_source "due_date_from_inherited_source": "2018-07-31", "created_at": "2018-07-17T13:36:22.770Z", "updated_at": "2018-07-18T12:22:05.239Z", "labels": [] } ``` ## Create and assign a child epic Creates a a new epic and associates it with provided parent epic. The response is LinkedEpic object. ``` POST /groups/:id/epics/:epic_iid/epics ``` | Attribute | Type | Required | Description | | --------------- | -------------- | -------- | ------------------------------------------------------------------------------------------------------------------ | | `id` | integer/string | yes | The ID or [URL-encoded path of the group](README.md#namespaced-path-encoding) owned by the authenticated user | | `epic_iid` | integer | yes | The internal ID of the (future parent) epic. | | `title` | string | yes | The title of a newly created epic. | ```shell curl --header POST "PRIVATE-TOKEN: " https://gitlab.example.com/api/v4/groups/1/epics/5/epics?title=Newpic ``` Example response: ```json { "id": 24, "iid": 2, "title": "child epic", "group_id": 49, "parent_id": 23, "has_children": false, "has_issues": false, "reference": "&2", "url": "http://localhost/groups/group16/-/epics/2", "relation_url": "http://localhost/groups/group16/-/epics/1/links/24" } ``` ## Re-order a child epic ``` PUT /groups/:id/epics/:epic_iid/epics/:child_epic_id ``` | Attribute | Type | Required | Description | | ---------------- | -------------- | -------- | ------------------------------------------------------------------------------------------------------------------ | | `id` | integer/string | yes | The ID or [URL-encoded path of the group](README.md#namespaced-path-encoding) owned by the authenticated user. | | `epic_iid` | integer | yes | The internal ID of the epic. | | `child_epic_id` | integer | yes | The global ID of the child epic. Internal ID can't be used because they can conflict with epics from other groups. | | `move_before_id` | integer | no | The global ID of a sibling epic that should be placed before the child epic. | | `move_after_id` | integer | no | The global ID of a sibling epic that should be placed after the child epic. | ```shell curl --header PUT "PRIVATE-TOKEN: " https://gitlab.example.com/api/v4/groups/1/epics/4/epics/5 ``` Example response: ```json [ { "id": 29, "iid": 6, "group_id": 1, "parent_id": 5, "title": "Accusamus iste et ullam ratione voluptatem omnis debitis dolor est.", "description": "Molestias dolorem eos vitae expedita impedit necessitatibus quo voluptatum.", "author": { "id": 10, "name": "Lu Mayer", "username": "kam", "state": "active", "avatar_url": "http://www.gravatar.com/avatar/018729e129a6f31c80a6327a30196823?s=80&d=identicon", "web_url": "http://localhost:3001/kam" }, "start_date": null, "start_date_is_fixed": false, "start_date_fixed": null, "start_date_from_milestones": null, //deprecated in favor of start_date_from_inherited_source "start_date_from_inherited_source": null, "end_date": "2018-07-31", //deprecated in favor of due_date "due_date": "2018-07-31", "due_date_is_fixed": false, "due_date_fixed": null, "due_date_from_milestones": "2018-07-31", //deprecated in favor of start_date_from_inherited_source "due_date_from_inherited_source": "2018-07-31", "created_at": "2018-07-17T13:36:22.770Z", "updated_at": "2018-07-18T12:22:05.239Z", "labels": [] } ] ``` ## Unassign a child epic Unassigns a child epic from a parent epic. ``` DELETE /groups/:id/epics/:epic_iid/epics/:child_epic_id ``` | Attribute | Type | Required | Description | | --------------- | -------------- | -------- | ------------------------------------------------------------------------------------------------------------------ | | `id` | integer/string | yes | The ID or [URL-encoded path of the group](README.md#namespaced-path-encoding) owned by the authenticated user. | | `epic_iid` | integer | yes | The internal ID of the epic. | | `child_epic_id` | integer | yes | The global ID of the child epic. Internal ID can't be used because they can conflict with epics from other groups. | ```shell curl --header DELETE "PRIVATE-TOKEN: " https://gitlab.example.com/api/v4/groups/1/epics/4/epics/5 ``` Example response: ```json { "id": 5, "iid": 38, "group_id": 1, "parent_id": null, "title": "Accusamus iste et ullam ratione voluptatem omnis debitis dolor est.", "description": "Molestias dolorem eos vitae expedita impedit necessitatibus quo voluptatum.", "author": { "id": 10, "name": "Lu Mayer", "username": "kam", "state": "active", "avatar_url": "http://www.gravatar.com/avatar/018729e129a6f31c80a6327a30196823?s=80&d=identicon", "web_url": "http://localhost:3001/kam" }, "start_date": null, "start_date_is_fixed": false, "start_date_fixed": null, "start_date_from_milestones": null, //deprecated in favor of start_date_from_inherited_source "start_date_from_inherited_source": null, "end_date": "2018-07-31", //deprecated in favor of due_date "due_date": "2018-07-31", "due_date_is_fixed": false, "due_date_fixed": null, "due_date_from_milestones": "2018-07-31", //deprecated in favor of start_date_from_inherited_source "due_date_from_inherited_source": "2018-07-31", "created_at": "2018-07-17T13:36:22.770Z", "updated_at": "2018-07-18T12:22:05.239Z", "labels": [] } ```