Reply to YouTube comment
Input
text requiredThe reply body to post.
video requiredA YouTube video URL (watch?v=, youtu.be/, /shorts/, /embed/) or a bare 11-char video id.
commentId requiredThe id of the comment to reply to.
account optionalEmail (or a distinctive part of it) of the signed-in Google account to reply as, e.g. "[email protected]". Omit to use the browser's default account. Replying is public and immediate, so when several accounts are signed in, name the intended one rather than relying on the default.
Output
text requiredreplyId requiredThe id of the newly created reply (format parentId.replyId; use with delete_comment).
parentCommentId requiredauthuser optionalrepliedAs optionalEmail of the account the reply was actually posted as.
FAQ
Get YouTube video transcript
Fetch a YouTube video's caption transcript (auto-generated or uploaded) with per-segment timestamps. Returns available:false when the video has no captions in any language.
Search YouTube videos
Search YouTube videos by query, or list a channel's or playlist's videos from its URL. Returns a list of videos with id, title, url, duration, channelName, channelUrl, viewCount, date, thumbnailUrl, and description.
Get YouTube comments
List a YouTube video's top-level comments from a watch URL or video id. Per comment: id, text, author, channelId, authorAvatar, publishedTime, likeCount, replyCount, isVerified, isCreator, pinned. Sort by 'top' (default) or 'newest' and paginate with the returned nextCursor. likeCount and replyCount are YouTube's abbreviated strings (e.g. "255k", "960"), and comments come back empty when they are disabled.