Comment object
23 endpoints on 13 platforms return the Comment object with the same 13 fields, so code written for one platform reads the others unchanged. A call costs $0.0020 to $0.0200.
A Comment is what someone wrote under a post: its text, who wrote it, when, and its likes and reply count. A reply to a comment is a comment too, read with each platform's replies endpoint.
post_id is the post it is under; parent_id is the comment it answers directly and root_id the top-level comment of its thread, both null on a top-level comment. It shares these fields and author, text and metrics with Post, so an X (Twitter) reply, which comes back as a post, reads as a comment too; a buyer's review of a product is a Review, not a comment.
Fields
A field the platform cannot give is left out of the item and named in meta.unavailable. It is never filled with a guess or a zero.
ID
Link that opens the comment
Text
When it was posted
Commenter
Commenter's account ID
Commenter's handle
Commenter's display name
Commenter's avatar
Engagement counts
Likes
Replies
ID of the post it is under
ID of the comment it replies to directly; null for a top-level comment
ID of the top-level comment of its thread; null for a top-level comment
Where each number comes from
The same field name does not always mean the same act on every platform. This table says which of the platform's own numbers goes into the field.
metrics.likesLikes; from a thousand up the platform shows a rounded numberYouTubeWhat a platform cannot give
A platform stands against a field when none of its endpoints gives it.
urlTikTokYouTubeInstagramDouyinXiaohongshu (RedNote)FacebookWeChat Official AccountsWeChat ChannelsBilibiliWeiboKuaishouZhihupublished_atYouTubeauthor.usernameFacebookWeChat Official AccountsWeChat ChannelsWeiboKuaishouauthor.nameInstagramRedditmetrics.likesRedditmetrics.commentsInstagramWeChat ChannelsKuaishoupost_idYouTubeInstagramWeChat Official AccountsKuaishouZhihuparent_idFacebookroot_idFacebookmeta.unavailable.Endpoints that return Comment
The number beside each platform is how many of its endpoints return it.
Example
One item from tiktok.comments.replies.list, as recorded 2026-10-12 18:45 UTC. Names, text, IDs and links are examples; the figures are as recorded.
{
"id": "7644787390529913037",
"text": "Watched this twice, so calm.",
"published_at": "2026-10-08T14:25:18.000Z",
"author": {
"id": "6105018514602246534",
"username": "priya.reads",
"name": "Priya R.",
"avatar_url": "https://p16-sign-va.tiktokcdn.com/tos-maliva-avt-0068/597f67debd958121cee2~c5_100x100.jpeg"
},
"metrics": { "likes": 12 },
"post_id": "7509942111396641514",
"parent_id": "7634441392518202098",
"root_id": "7616357043440017458"
}