REST API endpoints for sub-issues

Get parent issue

You can use the REST API to get the parent issue of a sub-issue.

This endpoint supports the following custom media types. For more information, see Media types.

application/vnd.github.raw+json: Returns the raw markdown body. Response will include body. This is the default if you do not pass any specific media type.
application/vnd.github.text+json: Returns a text only representation of the markdown body. Response will include body_text.
application/vnd.github.html+json: Returns HTML rendered from the body's markdown. Response will include body_html.
application/vnd.github.full+json: Returns raw, text, and HTML representations. Response will include body, body_text, and body_html.

fine_grained_access

works_with_fine_grained_tokens:

permission_set:

"Issues" repository permissions (read)

allows_public_read_access

Parameters for "Get parent issue"

Headers
Name, Type, Description
`accept` string Setting to `application/vnd.github+json` is recommended.

Path parameters
Name, Type, Description
`owner` string Required The account owner of the repository. The name is not case sensitive.
`repo` string Required The name of the repository without the `.git` extension. The name is not case sensitive.
`issue_number` integer Required The number that identifies the issue.

http_status_code

status_code	Description
`200`	OK
`301`	Moved permanently
`404`	Resource not found
`410`	Gone

code_samples

request_example

get/repos/{owner}/{repo}/issues/{issue_number}/parent

curl -L \
  -H "Accept: application/vnd.github+json" \
  -H "Authorization: Bearer <YOUR-TOKEN>" \
  -H "X-GitHub-Api-Version: 2026-03-10" \
  https://api.github.com/repos/OWNER/REPO/issues/ISSUE_NUMBER/parent

Response

Status: 200

{
  "id": 1,
  "node_id": "MDU6SXNzdWUx",
  "url": "https://api.github.com/repos/octocat/Hello-World/issues/1347",
  "repository_url": "https://api.github.com/repos/octocat/Hello-World",
  "labels_url": "https://api.github.com/repos/octocat/Hello-World/issues/1347/labels{/name}",
  "comments_url": "https://api.github.com/repos/octocat/Hello-World/issues/1347/comments",
  "events_url": "https://api.github.com/repos/octocat/Hello-World/issues/1347/events",
  "html_url": "https://github.com/octocat/Hello-World/issues/1347",
  "number": 1347,
  "state": "open",
  "title": "Found a bug",
  "body": "I'm having a problem with this.",
  "user": {
    "login": "octocat",
    "id": 1,
    "node_id": "MDQ6VXNlcjE=",
    "avatar_url": "https://github.com/images/error/octocat_happy.gif",
    "gravatar_id": "",
    "url": "https://api.github.com/users/octocat",
    "html_url": "https://github.com/octocat",
    "followers_url": "https://api.github.com/users/octocat/followers",
    "following_url": "https://api.github.com/users/octocat/following{/other_user}",
    "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
    "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
    "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
    "organizations_url": "https://api.github.com/users/octocat/orgs",
    "repos_url": "https://api.github.com/users/octocat/repos",
    "events_url": "https://api.github.com/users/octocat/events{/privacy}",
    "received_events_url": "https://api.github.com/users/octocat/received_events",
    "type": "User",
    "site_admin": false
  },
  "pinned_comment": null,
  "labels": [
    {
      "id": 208045946,
      "node_id": "MDU6TGFiZWwyMDgwNDU5NDY=",
      "url": "https://api.github.com/repos/octocat/Hello-World/labels/bug",
      "name": "bug",
      "description": "Something isn't working",
      "color": "f29513",
      "default": true
    }
  ],
  "assignees": [
    {
      "login": "octocat",
      "id": 1,
      "node_id": "MDQ6VXNlcjE=",
      "avatar_url": "https://github.com/images/error/octocat_happy.gif",
      "gravatar_id": "",
      "url": "https://api.github.com/users/octocat",
      "html_url": "https://github.com/octocat",
      "followers_url": "https://api.github.com/users/octocat/followers",
      "following_url": "https://api.github.com/users/octocat/following{/other_user}",
      "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
      "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
      "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
      "organizations_url": "https://api.github.com/users/octocat/orgs",
      "repos_url": "https://api.github.com/users/octocat/repos",
      "events_url": "https://api.github.com/users/octocat/events{/privacy}",
      "received_events_url": "https://api.github.com/users/octocat/received_events",
      "type": "User",
      "site_admin": false
    }
  ],
  "milestone": {
    "url": "https://api.github.com/repos/octocat/Hello-World/milestones/1",
    "html_url": "https://github.com/octocat/Hello-World/milestones/v1.0",
    "labels_url": "https://api.github.com/repos/octocat/Hello-World/milestones/1/labels",
    "id": 1002604,
    "node_id": "MDk6TWlsZXN0b25lMTAwMjYwNA==",
    "number": 1,
    "state": "open",
    "title": "v1.0",
    "description": "Tracking milestone for version 1.0",
    "creator": {
      "login": "octocat",
      "id": 1,
      "node_id": "MDQ6VXNlcjE=",
      "avatar_url": "https://github.com/images/error/octocat_happy.gif",
      "gravatar_id": "",
      "url": "https://api.github.com/users/octocat",
      "html_url": "https://github.com/octocat",
      "followers_url": "https://api.github.com/users/octocat/followers",
      "following_url": "https://api.github.com/users/octocat/following{/other_user}",
      "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
      "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
      "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
      "organizations_url": "https://api.github.com/users/octocat/orgs",
      "repos_url": "https://api.github.com/users/octocat/repos",
      "events_url": "https://api.github.com/users/octocat/events{/privacy}",
      "received_events_url": "https://api.github.com/users/octocat/received_events",
      "type": "User",
      "site_admin": false
    },
    "open_issues": 4,
    "closed_issues": 8,
    "created_at": "2011-04-10T20:09:31Z",
    "updated_at": "2014-03-03T18:58:10Z",
    "closed_at": "2013-02-12T13:22:01Z",
    "due_on": "2012-10-09T23:39:01Z"
  },
  "locked": true,
  "active_lock_reason": "too heated",
  "comments": 0,
  "pull_request": {
    "url": "https://api.github.com/repos/octocat/Hello-World/pulls/1347",
    "html_url": "https://github.com/octocat/Hello-World/pull/1347",
    "diff_url": "https://github.com/octocat/Hello-World/pull/1347.diff",
    "patch_url": "https://github.com/octocat/Hello-World/pull/1347.patch"
  },
  "closed_at": null,
  "created_at": "2011-04-22T13:33:48Z",
  "updated_at": "2011-04-22T13:33:48Z",
  "closed_by": {
    "login": "octocat",
    "id": 1,
    "node_id": "MDQ6VXNlcjE=",
    "avatar_url": "https://github.com/images/error/octocat_happy.gif",
    "gravatar_id": "",
    "url": "https://api.github.com/users/octocat",
    "html_url": "https://github.com/octocat",
    "followers_url": "https://api.github.com/users/octocat/followers",
    "following_url": "https://api.github.com/users/octocat/following{/other_user}",
    "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
    "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
    "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
    "organizations_url": "https://api.github.com/users/octocat/orgs",
    "repos_url": "https://api.github.com/users/octocat/repos",
    "events_url": "https://api.github.com/users/octocat/events{/privacy}",
    "received_events_url": "https://api.github.com/users/octocat/received_events",
    "type": "User",
    "site_admin": false
  },
  "author_association": "COLLABORATOR",
  "state_reason": "completed"
}

You can use the REST API to remove a sub-issue from an issue. Removing content too quickly using this endpoint may result in secondary rate limiting. For more information, see "Rate limits for the API" and "Best practices for using the REST API." This endpoint supports the following custom media types. For more information, see "Media types."

application/vnd.github.raw+json: Returns the raw markdown body. Response will include body. This is the default if you do not pass a specific media type.
application/vnd.github.text+json: Returns a text only representation of the markdown body. Response will include body_text.
application/vnd.github.html+json: Returns HTML rendered from the body's markdown. Response will include body_html.
application/vnd.github.full+json: Returns raw, text, and HTML representations. Response will include body, body_text, and body_html.

fine_grained_access

works_with_fine_grained_tokens:

permission_set:

"Issues" repository permissions (write)

Parameters for "Remove sub-issue"

Headers
Name, Type, Description
`accept` string Setting to `application/vnd.github+json` is recommended.

Path parameters
Name, Type, Description
`owner` string Required The account owner of the repository. The name is not case sensitive.
`repo` string Required The name of the repository without the `.git` extension. The name is not case sensitive.
`issue_number` integer Required The number that identifies the issue.

Body parameters
Name, Type, Description
`sub_issue_id` integer Required The id of the sub-issue to remove

http_status_code

status_code	Description
`200`	OK
`400`	Bad Request
`404`	Resource not found

code_samples

request_example

delete/repos/{owner}/{repo}/issues/{issue_number}/sub_issue

curl -L \
  -X DELETE \
  -H "Accept: application/vnd.github+json" \
  -H "Authorization: Bearer <YOUR-TOKEN>" \
  -H "X-GitHub-Api-Version: 2026-03-10" \
  https://api.github.com/repos/OWNER/REPO/issues/ISSUE_NUMBER/sub_issue \
  -d '{"sub_issue_id":6}'

Response

Status: 200

{
  "id": 1,
  "node_id": "MDU6SXNzdWUx",
  "url": "https://api.github.com/repos/octocat/Hello-World/issues/1347",
  "repository_url": "https://api.github.com/repos/octocat/Hello-World",
  "labels_url": "https://api.github.com/repos/octocat/Hello-World/issues/1347/labels{/name}",
  "comments_url": "https://api.github.com/repos/octocat/Hello-World/issues/1347/comments",
  "events_url": "https://api.github.com/repos/octocat/Hello-World/issues/1347/events",
  "html_url": "https://github.com/octocat/Hello-World/issues/1347",
  "number": 1347,
  "state": "open",
  "title": "Found a bug",
  "body": "I'm having a problem with this.",
  "user": {
    "login": "octocat",
    "id": 1,
    "node_id": "MDQ6VXNlcjE=",
    "avatar_url": "https://github.com/images/error/octocat_happy.gif",
    "gravatar_id": "",
    "url": "https://api.github.com/users/octocat",
    "html_url": "https://github.com/octocat",
    "followers_url": "https://api.github.com/users/octocat/followers",
    "following_url": "https://api.github.com/users/octocat/following{/other_user}",
    "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
    "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
    "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
    "organizations_url": "https://api.github.com/users/octocat/orgs",
    "repos_url": "https://api.github.com/users/octocat/repos",
    "events_url": "https://api.github.com/users/octocat/events{/privacy}",
    "received_events_url": "https://api.github.com/users/octocat/received_events",
    "type": "User",
    "site_admin": false
  },
  "pinned_comment": null,
  "labels": [
    {
      "id": 208045946,
      "node_id": "MDU6TGFiZWwyMDgwNDU5NDY=",
      "url": "https://api.github.com/repos/octocat/Hello-World/labels/bug",
      "name": "bug",
      "description": "Something isn't working",
      "color": "f29513",
      "default": true
    }
  ],
  "assignees": [
    {
      "login": "octocat",
      "id": 1,
      "node_id": "MDQ6VXNlcjE=",
      "avatar_url": "https://github.com/images/error/octocat_happy.gif",
      "gravatar_id": "",
      "url": "https://api.github.com/users/octocat",
      "html_url": "https://github.com/octocat",
      "followers_url": "https://api.github.com/users/octocat/followers",
      "following_url": "https://api.github.com/users/octocat/following{/other_user}",
      "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
      "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
      "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
      "organizations_url": "https://api.github.com/users/octocat/orgs",
      "repos_url": "https://api.github.com/users/octocat/repos",
      "events_url": "https://api.github.com/users/octocat/events{/privacy}",
      "received_events_url": "https://api.github.com/users/octocat/received_events",
      "type": "User",
      "site_admin": false
    }
  ],
  "milestone": {
    "url": "https://api.github.com/repos/octocat/Hello-World/milestones/1",
    "html_url": "https://github.com/octocat/Hello-World/milestones/v1.0",
    "labels_url": "https://api.github.com/repos/octocat/Hello-World/milestones/1/labels",
    "id": 1002604,
    "node_id": "MDk6TWlsZXN0b25lMTAwMjYwNA==",
    "number": 1,
    "state": "open",
    "title": "v1.0",
    "description": "Tracking milestone for version 1.0",
    "creator": {
      "login": "octocat",
      "id": 1,
      "node_id": "MDQ6VXNlcjE=",
      "avatar_url": "https://github.com/images/error/octocat_happy.gif",
      "gravatar_id": "",
      "url": "https://api.github.com/users/octocat",
      "html_url": "https://github.com/octocat",
      "followers_url": "https://api.github.com/users/octocat/followers",
      "following_url": "https://api.github.com/users/octocat/following{/other_user}",
      "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
      "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
      "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
      "organizations_url": "https://api.github.com/users/octocat/orgs",
      "repos_url": "https://api.github.com/users/octocat/repos",
      "events_url": "https://api.github.com/users/octocat/events{/privacy}",
      "received_events_url": "https://api.github.com/users/octocat/received_events",
      "type": "User",
      "site_admin": false
    },
    "open_issues": 4,
    "closed_issues": 8,
    "created_at": "2011-04-10T20:09:31Z",
    "updated_at": "2014-03-03T18:58:10Z",
    "closed_at": "2013-02-12T13:22:01Z",
    "due_on": "2012-10-09T23:39:01Z"
  },
  "locked": true,
  "active_lock_reason": "too heated",
  "comments": 0,
  "pull_request": {
    "url": "https://api.github.com/repos/octocat/Hello-World/pulls/1347",
    "html_url": "https://github.com/octocat/Hello-World/pull/1347",
    "diff_url": "https://github.com/octocat/Hello-World/pull/1347.diff",
    "patch_url": "https://github.com/octocat/Hello-World/pull/1347.patch"
  },
  "closed_at": null,
  "created_at": "2011-04-22T13:33:48Z",
  "updated_at": "2011-04-22T13:33:48Z",
  "closed_by": {
    "login": "octocat",
    "id": 1,
    "node_id": "MDQ6VXNlcjE=",
    "avatar_url": "https://github.com/images/error/octocat_happy.gif",
    "gravatar_id": "",
    "url": "https://api.github.com/users/octocat",
    "html_url": "https://github.com/octocat",
    "followers_url": "https://api.github.com/users/octocat/followers",
    "following_url": "https://api.github.com/users/octocat/following{/other_user}",
    "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
    "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
    "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
    "organizations_url": "https://api.github.com/users/octocat/orgs",
    "repos_url": "https://api.github.com/users/octocat/repos",
    "events_url": "https://api.github.com/users/octocat/events{/privacy}",
    "received_events_url": "https://api.github.com/users/octocat/received_events",
    "type": "User",
    "site_admin": false
  },
  "author_association": "COLLABORATOR",
  "state_reason": "completed"
}

List sub-issues

You can use the REST API to list the sub-issues on an issue.

This endpoint supports the following custom media types. For more information, see Media types.

application/vnd.github.raw+json: Returns the raw Markdown body. Response will include body. This is the default if you do not pass any specific media type.
application/vnd.github.text+json: Returns a text only representation of the Markdown body. Response will include body_text.
application/vnd.github.html+json: Returns HTML rendered from the body's Markdown. Response will include body_html.
application/vnd.github.full+json: Returns raw, text, and HTML representations. Response will include body, body_text, and body_html.

fine_grained_access

works_with_fine_grained_tokens:

permission_set:

"Issues" repository permissions (read)

allows_public_read_access

Parameters for "List sub-issues"

Headers
Name, Type, Description
`accept` string Setting to `application/vnd.github+json` is recommended.

Path parameters
Name, Type, Description
`owner` string Required The account owner of the repository. The name is not case sensitive.
`repo` string Required The name of the repository without the `.git` extension. The name is not case sensitive.
`issue_number` integer Required The number that identifies the issue.

Query parameters
Name, Type, Description
`per_page` integer The number of results per page (max 100). For more information, see "Using pagination in the REST API." Default: `30`
`page` integer The page number of the results to fetch. For more information, see "Using pagination in the REST API." Default: `1`

http_status_code

status_code	Description
`200`	OK
`404`	Resource not found
`410`	Gone

code_samples

request_example

get/repos/{owner}/{repo}/issues/{issue_number}/sub_issues

curl -L \
  -H "Accept: application/vnd.github+json" \
  -H "Authorization: Bearer <YOUR-TOKEN>" \
  -H "X-GitHub-Api-Version: 2026-03-10" \
  https://api.github.com/repos/OWNER/REPO/issues/ISSUE_NUMBER/sub_issues

Response

Status: 200

[
  {
    "id": 1,
    "node_id": "MDU6SXNzdWUx",
    "url": "https://api.github.com/repos/octocat/Hello-World/issues/1347",
    "repository_url": "https://api.github.com/repos/octocat/Hello-World",
    "labels_url": "https://api.github.com/repos/octocat/Hello-World/issues/1347/labels{/name}",
    "comments_url": "https://api.github.com/repos/octocat/Hello-World/issues/1347/comments",
    "events_url": "https://api.github.com/repos/octocat/Hello-World/issues/1347/events",
    "html_url": "https://github.com/octocat/Hello-World/issues/1347",
    "number": 1347,
    "state": "open",
    "title": "Found a bug",
    "body": "I'm having a problem with this.",
    "user": {
      "login": "octocat",
      "id": 1,
      "node_id": "MDQ6VXNlcjE=",
      "avatar_url": "https://github.com/images/error/octocat_happy.gif",
      "gravatar_id": "",
      "url": "https://api.github.com/users/octocat",
      "html_url": "https://github.com/octocat",
      "followers_url": "https://api.github.com/users/octocat/followers",
      "following_url": "https://api.github.com/users/octocat/following{/other_user}",
      "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
      "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
      "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
      "organizations_url": "https://api.github.com/users/octocat/orgs",
      "repos_url": "https://api.github.com/users/octocat/repos",
      "events_url": "https://api.github.com/users/octocat/events{/privacy}",
      "received_events_url": "https://api.github.com/users/octocat/received_events",
      "type": "User",
      "site_admin": false
    },
    "pinned_comment": null,
    "labels": [
      {
        "id": 208045946,
        "node_id": "MDU6TGFiZWwyMDgwNDU5NDY=",
        "url": "https://api.github.com/repos/octocat/Hello-World/labels/bug",
        "name": "bug",
        "description": "Something isn't working",
        "color": "f29513",
        "default": true
      }
    ],
    "assignee": {
      "login": "octocat",
      "id": 1,
      "node_id": "MDQ6VXNlcjE=",
      "avatar_url": "https://github.com/images/error/octocat_happy.gif",
      "gravatar_id": "",
      "url": "https://api.github.com/users/octocat",
      "html_url": "https://github.com/octocat",
      "followers_url": "https://api.github.com/users/octocat/followers",
      "following_url": "https://api.github.com/users/octocat/following{/other_user}",
      "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
      "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
      "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
      "organizations_url": "https://api.github.com/users/octocat/orgs",
      "repos_url": "https://api.github.com/users/octocat/repos",
      "events_url": "https://api.github.com/users/octocat/events{/privacy}",
      "received_events_url": "https://api.github.com/users/octocat/received_events",
      "type": "User",
      "site_admin": false
    },
    "assignees": [
      {
        "login": "octocat",
        "id": 1,
        "node_id": "MDQ6VXNlcjE=",
        "avatar_url": "https://github.com/images/error/octocat_happy.gif",
        "gravatar_id": "",
        "url": "https://api.github.com/users/octocat",
        "html_url": "https://github.com/octocat",
        "followers_url": "https://api.github.com/users/octocat/followers",
        "following_url": "https://api.github.com/users/octocat/following{/other_user}",
        "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
        "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
        "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
        "organizations_url": "https://api.github.com/users/octocat/orgs",
        "repos_url": "https://api.github.com/users/octocat/repos",
        "events_url": "https://api.github.com/users/octocat/events{/privacy}",
        "received_events_url": "https://api.github.com/users/octocat/received_events",
        "type": "User",
        "site_admin": false
      }
    ],
    "milestone": {
      "url": "https://api.github.com/repos/octocat/Hello-World/milestones/1",
      "html_url": "https://github.com/octocat/Hello-World/milestones/v1.0",
      "labels_url": "https://api.github.com/repos/octocat/Hello-World/milestones/1/labels",
      "id": 1002604,
      "node_id": "MDk6TWlsZXN0b25lMTAwMjYwNA==",
      "number": 1,
      "state": "open",
      "title": "v1.0",
      "description": "Tracking milestone for version 1.0",
      "creator": {
        "login": "octocat",
        "id": 1,
        "node_id": "MDQ6VXNlcjE=",
        "avatar_url": "https://github.com/images/error/octocat_happy.gif",
        "gravatar_id": "",
        "url": "https://api.github.com/users/octocat",
        "html_url": "https://github.com/octocat",
        "followers_url": "https://api.github.com/users/octocat/followers",
        "following_url": "https://api.github.com/users/octocat/following{/other_user}",
        "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
        "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
        "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
        "organizations_url": "https://api.github.com/users/octocat/orgs",
        "repos_url": "https://api.github.com/users/octocat/repos",
        "events_url": "https://api.github.com/users/octocat/events{/privacy}",
        "received_events_url": "https://api.github.com/users/octocat/received_events",
        "type": "User",
        "site_admin": false
      },
      "open_issues": 4,
      "closed_issues": 8,
      "created_at": "2011-04-10T20:09:31Z",
      "updated_at": "2014-03-03T18:58:10Z",
      "closed_at": "2013-02-12T13:22:01Z",
      "due_on": "2012-10-09T23:39:01Z"
    },
    "locked": true,
    "active_lock_reason": "too heated",
    "comments": 0,
    "pull_request": {
      "url": "https://api.github.com/repos/octocat/Hello-World/pulls/1347",
      "html_url": "https://github.com/octocat/Hello-World/pull/1347",
      "diff_url": "https://github.com/octocat/Hello-World/pull/1347.diff",
      "patch_url": "https://github.com/octocat/Hello-World/pull/1347.patch"
    },
    "closed_at": null,
    "created_at": "2011-04-22T13:33:48Z",
    "updated_at": "2011-04-22T13:33:48Z",
    "closed_by": {
      "login": "octocat",
      "id": 1,
      "node_id": "MDQ6VXNlcjE=",
      "avatar_url": "https://github.com/images/error/octocat_happy.gif",
      "gravatar_id": "",
      "url": "https://api.github.com/users/octocat",
      "html_url": "https://github.com/octocat",
      "followers_url": "https://api.github.com/users/octocat/followers",
      "following_url": "https://api.github.com/users/octocat/following{/other_user}",
      "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
      "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
      "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
      "organizations_url": "https://api.github.com/users/octocat/orgs",
      "repos_url": "https://api.github.com/users/octocat/repos",
      "events_url": "https://api.github.com/users/octocat/events{/privacy}",
      "received_events_url": "https://api.github.com/users/octocat/received_events",
      "type": "User",
      "site_admin": false
    },
    "author_association": "COLLABORATOR",
    "state_reason": "completed"
  }
]

Add sub-issue

You can use the REST API to add sub-issues to issues.

Creating content too quickly using this endpoint may result in secondary rate limiting. For more information, see "Rate limits for the API" and "Best practices for using the REST API."

This endpoint supports the following custom media types. For more information, see "Media types."

application/vnd.github.raw+json: Returns the raw markdown body. Response will include body. This is the default if you do not pass any specific media type.
application/vnd.github.text+json: Returns a text only representation of the markdown body. Response will include body_text.
application/vnd.github.html+json: Returns HTML rendered from the body's markdown. Response will include body_html.
application/vnd.github.full+json: Returns raw, text, and HTML representations. Response will include body, body_text, and body_html.

fine_grained_access

works_with_fine_grained_tokens:

permission_set:

"Issues" repository permissions (write)

Parameters for "Add sub-issue"

Headers
Name, Type, Description
`accept` string Setting to `application/vnd.github+json` is recommended.

Path parameters
Name, Type, Description
`owner` string Required The account owner of the repository. The name is not case sensitive.
`repo` string Required The name of the repository without the `.git` extension. The name is not case sensitive.
`issue_number` integer Required The number that identifies the issue.

Body parameters
Name, Type, Description
`sub_issue_id` integer Required The id of the sub-issue to add. The sub-issue must belong to the same repository owner as the parent issue
`replace_parent` boolean Option that, when true, instructs the operation to replace the sub-issues current parent issue

http_status_code

status_code	Description
`201`	Created
`403`	Forbidden
`404`	Resource not found
`410`	Gone
`422`	Validation failed, or the endpoint has been spammed.

code_samples

request_example

post/repos/{owner}/{repo}/issues/{issue_number}/sub_issues

curl -L \
  -X POST \
  -H "Accept: application/vnd.github+json" \
  -H "Authorization: Bearer <YOUR-TOKEN>" \
  -H "X-GitHub-Api-Version: 2026-03-10" \
  https://api.github.com/repos/OWNER/REPO/issues/ISSUE_NUMBER/sub_issues \
  -d '{"sub_issue_id":1}'

Response

Status: 201

{
  "id": 1,
  "node_id": "MDU6SXNzdWUx",
  "url": "https://api.github.com/repos/octocat/Hello-World/issues/1347",
  "repository_url": "https://api.github.com/repos/octocat/Hello-World",
  "labels_url": "https://api.github.com/repos/octocat/Hello-World/issues/1347/labels{/name}",
  "comments_url": "https://api.github.com/repos/octocat/Hello-World/issues/1347/comments",
  "events_url": "https://api.github.com/repos/octocat/Hello-World/issues/1347/events",
  "html_url": "https://github.com/octocat/Hello-World/issues/1347",
  "number": 1347,
  "state": "open",
  "title": "Found a bug",
  "body": "I'm having a problem with this.",
  "user": {
    "login": "octocat",
    "id": 1,
    "node_id": "MDQ6VXNlcjE=",
    "avatar_url": "https://github.com/images/error/octocat_happy.gif",
    "gravatar_id": "",
    "url": "https://api.github.com/users/octocat",
    "html_url": "https://github.com/octocat",
    "followers_url": "https://api.github.com/users/octocat/followers",
    "following_url": "https://api.github.com/users/octocat/following{/other_user}",
    "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
    "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
    "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
    "organizations_url": "https://api.github.com/users/octocat/orgs",
    "repos_url": "https://api.github.com/users/octocat/repos",
    "events_url": "https://api.github.com/users/octocat/events{/privacy}",
    "received_events_url": "https://api.github.com/users/octocat/received_events",
    "type": "User",
    "site_admin": false
  },
  "pinned_comment": null,
  "labels": [
    {
      "id": 208045946,
      "node_id": "MDU6TGFiZWwyMDgwNDU5NDY=",
      "url": "https://api.github.com/repos/octocat/Hello-World/labels/bug",
      "name": "bug",
      "description": "Something isn't working",
      "color": "f29513",
      "default": true
    }
  ],
  "assignees": [
    {
      "login": "octocat",
      "id": 1,
      "node_id": "MDQ6VXNlcjE=",
      "avatar_url": "https://github.com/images/error/octocat_happy.gif",
      "gravatar_id": "",
      "url": "https://api.github.com/users/octocat",
      "html_url": "https://github.com/octocat",
      "followers_url": "https://api.github.com/users/octocat/followers",
      "following_url": "https://api.github.com/users/octocat/following{/other_user}",
      "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
      "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
      "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
      "organizations_url": "https://api.github.com/users/octocat/orgs",
      "repos_url": "https://api.github.com/users/octocat/repos",
      "events_url": "https://api.github.com/users/octocat/events{/privacy}",
      "received_events_url": "https://api.github.com/users/octocat/received_events",
      "type": "User",
      "site_admin": false
    }
  ],
  "milestone": {
    "url": "https://api.github.com/repos/octocat/Hello-World/milestones/1",
    "html_url": "https://github.com/octocat/Hello-World/milestones/v1.0",
    "labels_url": "https://api.github.com/repos/octocat/Hello-World/milestones/1/labels",
    "id": 1002604,
    "node_id": "MDk6TWlsZXN0b25lMTAwMjYwNA==",
    "number": 1,
    "state": "open",
    "title": "v1.0",
    "description": "Tracking milestone for version 1.0",
    "creator": {
      "login": "octocat",
      "id": 1,
      "node_id": "MDQ6VXNlcjE=",
      "avatar_url": "https://github.com/images/error/octocat_happy.gif",
      "gravatar_id": "",
      "url": "https://api.github.com/users/octocat",
      "html_url": "https://github.com/octocat",
      "followers_url": "https://api.github.com/users/octocat/followers",
      "following_url": "https://api.github.com/users/octocat/following{/other_user}",
      "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
      "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
      "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
      "organizations_url": "https://api.github.com/users/octocat/orgs",
      "repos_url": "https://api.github.com/users/octocat/repos",
      "events_url": "https://api.github.com/users/octocat/events{/privacy}",
      "received_events_url": "https://api.github.com/users/octocat/received_events",
      "type": "User",
      "site_admin": false
    },
    "open_issues": 4,
    "closed_issues": 8,
    "created_at": "2011-04-10T20:09:31Z",
    "updated_at": "2014-03-03T18:58:10Z",
    "closed_at": "2013-02-12T13:22:01Z",
    "due_on": "2012-10-09T23:39:01Z"
  },
  "locked": true,
  "active_lock_reason": "too heated",
  "comments": 0,
  "pull_request": {
    "url": "https://api.github.com/repos/octocat/Hello-World/pulls/1347",
    "html_url": "https://github.com/octocat/Hello-World/pull/1347",
    "diff_url": "https://github.com/octocat/Hello-World/pull/1347.diff",
    "patch_url": "https://github.com/octocat/Hello-World/pull/1347.patch"
  },
  "closed_at": null,
  "created_at": "2011-04-22T13:33:48Z",
  "updated_at": "2011-04-22T13:33:48Z",
  "closed_by": {
    "login": "octocat",
    "id": 1,
    "node_id": "MDQ6VXNlcjE=",
    "avatar_url": "https://github.com/images/error/octocat_happy.gif",
    "gravatar_id": "",
    "url": "https://api.github.com/users/octocat",
    "html_url": "https://github.com/octocat",
    "followers_url": "https://api.github.com/users/octocat/followers",
    "following_url": "https://api.github.com/users/octocat/following{/other_user}",
    "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
    "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
    "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
    "organizations_url": "https://api.github.com/users/octocat/orgs",
    "repos_url": "https://api.github.com/users/octocat/repos",
    "events_url": "https://api.github.com/users/octocat/events{/privacy}",
    "received_events_url": "https://api.github.com/users/octocat/received_events",
    "type": "User",
    "site_admin": false
  },
  "author_association": "COLLABORATOR",
  "state_reason": "completed"
}

Reprioritize sub-issue

You can use the REST API to reprioritize a sub-issue to a different position in the parent list.

fine_grained_access

works_with_fine_grained_tokens:

permission_set:

"Issues" repository permissions (write)

Parameters for "Reprioritize sub-issue"

Headers
Name, Type, Description
`accept` string Setting to `application/vnd.github+json` is recommended.

Path parameters
Name, Type, Description
`owner` string Required The account owner of the repository. The name is not case sensitive.
`repo` string Required The name of the repository without the `.git` extension. The name is not case sensitive.
`issue_number` integer Required The number that identifies the issue.

Body parameters
Name, Type, Description
`sub_issue_id` integer Required The id of the sub-issue to reprioritize
`after_id` integer The id of the sub-issue to be prioritized after (either positional argument after OR before should be specified).
`before_id` integer The id of the sub-issue to be prioritized before (either positional argument after OR before should be specified).

http_status_code

status_code	Description
`200`	OK
`403`	Forbidden
`404`	Resource not found
`422`	Validation failed, or the endpoint has been spammed.
`503`	Service unavailable

code_samples

request_example

patch/repos/{owner}/{repo}/issues/{issue_number}/sub_issues/priority

curl -L \
  -X PATCH \
  -H "Accept: application/vnd.github+json" \
  -H "Authorization: Bearer <YOUR-TOKEN>" \
  -H "X-GitHub-Api-Version: 2026-03-10" \
  https://api.github.com/repos/OWNER/REPO/issues/ISSUE_NUMBER/sub_issues/priority \
  -d '{"sub_issue_id":6,"after_id":5}'

Response

Status: 200

{
  "id": 1,
  "node_id": "MDU6SXNzdWUx",
  "url": "https://api.github.com/repos/octocat/Hello-World/issues/1347",
  "repository_url": "https://api.github.com/repos/octocat/Hello-World",
  "labels_url": "https://api.github.com/repos/octocat/Hello-World/issues/1347/labels{/name}",
  "comments_url": "https://api.github.com/repos/octocat/Hello-World/issues/1347/comments",
  "events_url": "https://api.github.com/repos/octocat/Hello-World/issues/1347/events",
  "html_url": "https://github.com/octocat/Hello-World/issues/1347",
  "number": 1347,
  "state": "open",
  "title": "Found a bug",
  "body": "I'm having a problem with this.",
  "user": {
    "login": "octocat",
    "id": 1,
    "node_id": "MDQ6VXNlcjE=",
    "avatar_url": "https://github.com/images/error/octocat_happy.gif",
    "gravatar_id": "",
    "url": "https://api.github.com/users/octocat",
    "html_url": "https://github.com/octocat",
    "followers_url": "https://api.github.com/users/octocat/followers",
    "following_url": "https://api.github.com/users/octocat/following{/other_user}",
    "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
    "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
    "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
    "organizations_url": "https://api.github.com/users/octocat/orgs",
    "repos_url": "https://api.github.com/users/octocat/repos",
    "events_url": "https://api.github.com/users/octocat/events{/privacy}",
    "received_events_url": "https://api.github.com/users/octocat/received_events",
    "type": "User",
    "site_admin": false
  },
  "pinned_comment": null,
  "labels": [
    {
      "id": 208045946,
      "node_id": "MDU6TGFiZWwyMDgwNDU5NDY=",
      "url": "https://api.github.com/repos/octocat/Hello-World/labels/bug",
      "name": "bug",
      "description": "Something isn't working",
      "color": "f29513",
      "default": true
    }
  ],
  "assignees": [
    {
      "login": "octocat",
      "id": 1,
      "node_id": "MDQ6VXNlcjE=",
      "avatar_url": "https://github.com/images/error/octocat_happy.gif",
      "gravatar_id": "",
      "url": "https://api.github.com/users/octocat",
      "html_url": "https://github.com/octocat",
      "followers_url": "https://api.github.com/users/octocat/followers",
      "following_url": "https://api.github.com/users/octocat/following{/other_user}",
      "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
      "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
      "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
      "organizations_url": "https://api.github.com/users/octocat/orgs",
      "repos_url": "https://api.github.com/users/octocat/repos",
      "events_url": "https://api.github.com/users/octocat/events{/privacy}",
      "received_events_url": "https://api.github.com/users/octocat/received_events",
      "type": "User",
      "site_admin": false
    }
  ],
  "milestone": {
    "url": "https://api.github.com/repos/octocat/Hello-World/milestones/1",
    "html_url": "https://github.com/octocat/Hello-World/milestones/v1.0",
    "labels_url": "https://api.github.com/repos/octocat/Hello-World/milestones/1/labels",
    "id": 1002604,
    "node_id": "MDk6TWlsZXN0b25lMTAwMjYwNA==",
    "number": 1,
    "state": "open",
    "title": "v1.0",
    "description": "Tracking milestone for version 1.0",
    "creator": {
      "login": "octocat",
      "id": 1,
      "node_id": "MDQ6VXNlcjE=",
      "avatar_url": "https://github.com/images/error/octocat_happy.gif",
      "gravatar_id": "",
      "url": "https://api.github.com/users/octocat",
      "html_url": "https://github.com/octocat",
      "followers_url": "https://api.github.com/users/octocat/followers",
      "following_url": "https://api.github.com/users/octocat/following{/other_user}",
      "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
      "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
      "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
      "organizations_url": "https://api.github.com/users/octocat/orgs",
      "repos_url": "https://api.github.com/users/octocat/repos",
      "events_url": "https://api.github.com/users/octocat/events{/privacy}",
      "received_events_url": "https://api.github.com/users/octocat/received_events",
      "type": "User",
      "site_admin": false
    },
    "open_issues": 4,
    "closed_issues": 8,
    "created_at": "2011-04-10T20:09:31Z",
    "updated_at": "2014-03-03T18:58:10Z",
    "closed_at": "2013-02-12T13:22:01Z",
    "due_on": "2012-10-09T23:39:01Z"
  },
  "locked": true,
  "active_lock_reason": "too heated",
  "comments": 0,
  "pull_request": {
    "url": "https://api.github.com/repos/octocat/Hello-World/pulls/1347",
    "html_url": "https://github.com/octocat/Hello-World/pull/1347",
    "diff_url": "https://github.com/octocat/Hello-World/pull/1347.diff",
    "patch_url": "https://github.com/octocat/Hello-World/pull/1347.patch"
  },
  "closed_at": null,
  "created_at": "2011-04-22T13:33:48Z",
  "updated_at": "2011-04-22T13:33:48Z",
  "closed_by": {
    "login": "octocat",
    "id": 1,
    "node_id": "MDQ6VXNlcjE=",
    "avatar_url": "https://github.com/images/error/octocat_happy.gif",
    "gravatar_id": "",
    "url": "https://api.github.com/users/octocat",
    "html_url": "https://github.com/octocat",
    "followers_url": "https://api.github.com/users/octocat/followers",
    "following_url": "https://api.github.com/users/octocat/following{/other_user}",
    "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
    "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
    "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
    "organizations_url": "https://api.github.com/users/octocat/orgs",
    "repos_url": "https://api.github.com/users/octocat/repos",
    "events_url": "https://api.github.com/users/octocat/events{/privacy}",
    "received_events_url": "https://api.github.com/users/octocat/received_events",
    "type": "User",
    "site_admin": false
  },
  "author_association": "COLLABORATOR",
  "state_reason": "completed"
}