List issue comments 

GET /repos/:owner/:repo/issues/:issue_number/comments

Issue Comments are ordered by ascending ID.

Parameters

Name Type Description
since string Only comments updated at or after this time are returned. This is a timestamp in ISO 8601 format: YYYY-MM-DDTHH:MM:SSZ.

Response

Status: 200 OK
Link: <https://api.github.com/resource?page=2>; rel="next",
      <https://api.github.com/resource?page=5>; rel="last"

[
  {
    "id": 1,
    "node_id": "MDEyOklzc3VlQ29tbWVudDE=",
    "url": "https://api.github.com/repos/octocat/Hello-World/issues/comments/1",
    "html_url": "https://github.com/octocat/Hello-World/issues/1347#issuecomment-1",
    "body": "Me too",
    "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
    },
    "created_at": "2011-04-14T16:00:49Z",
    "updated_at": "2011-04-14T16:00:49Z"
  }
]

Reactions summary

An additional reactions object in the issue comment payload is currently available for developers to preview. During the preview period, the APIs may change without advance notice. Please see the blog post for full details.

To access the API you must provide a custom media type in the Accept header:

  application/vnd.github.squirrel-girl-preview

The reactions key will have the following payload where url can be used to construct the API location for listing and creating reactions.

{
  "total_count": 5,
  "+1": 3,
  "-1": 1,
  "laugh": 0,
  "confused": 0,
  "heart": 1,
  "hooray": 0,
  "url": "https://api.github.com/repos/octocat/Hello-World/issues/comments/1/reactions"
}