YouTube Video Comments and Replies (by Video ID)

{
  "type": "object",
  "required": [
    "videoId"
  ],
  "properties": {
    "videoId": {
      "type": "string",
      "pattern": "^[A-Za-z0-9_-]{6,20}$",
      "description": "The video's ID, the v value of its watch link (6 to 20 letters, digits, - or _)."
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "properties": {
    "comments": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "description": "The comment's ID."
          },
          "text": {
            "type": "string",
            "description": "The comment's text."
          },
          "likes": {
            "type": [
              "number",
              "null"
            ],
            "description": "The comment's like count; null when it shows no likes."
          },
          "author": {
            "type": "string",
            "description": "The commenter's public handle, starting with @."
          },
          "is_reply": {
            "type": "boolean",
            "description": "Whether this entry is a reply to another comment."
          },
          "reply_count": {
            "type": [
              "number",
              "null"
            ],
            "description": "How many replies the comment has; null when it has none."
          }
        }
      },
      "description": "One entry per comment or reply."
    },
    "video_id": {
      "type": "string",
      "description": "The video ID, echoed back."
    },
    "pagination": {
      "type": "object",
      "properties": {
        "replies": {
          "type": "number",
          "description": "Replies returned."
        },
        "comments_count": {
          "type": "number",
          "description": "Comments and replies returned."
        },
        "top_level_comments": {
          "type": "number",
          "description": "Top-level comments returned."
        }
      },
      "description": "Counts of what was returned."
    }
  },
  "description": "The video's comments and replies."
}