YouTube Comment Replies API

Pull YouTube comments at scale with author, text, likes, and reply threads.

What is the YouTube Comment Replies API?

The YouTube Comment Replies API lets you pull comments with author, text, likes, and replies from YouTube with a single REST call. No OAuth, no scraping infrastructure, and no platform SDKs — send the URL, get clean structured JSON back. Results are cached for 24 hours, so repeat lookups are instant and free.

What you get

Comment text, author name, and handle
Like counts and reply threads
Pagination via the limit parameter
Timestamps for trend and sentiment analysis

Example request

curl "https://api.captapi.com/v1/youtube/comment-replies?url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DdQw4w9WgXcQ" \
  -H "Authorization: Bearer capt_live_..."

Example response

{
  "success": true,
  "cached": false,
  "creditsUsed": 20,
  "data": {
    "total": 2,
    "comments": [
      {
        "author": "@viewer1",
        "text": "This is exactly what I needed!",
        "likes": 42,
        "replies": 3
      },
      {
        "author": "@viewer2",
        "text": "Great breakdown.",
        "likes": 11,
        "replies": 0
      }
    ]
  }
}

Response structure

A successful call returns success, cached, creditsUsed, and a data object with the following fields:

Result

totalNumber of comments returned.

Each comment

Each item in comments contains:

authorComment author name or handle.
textThe comment text.
likesNumber of likes on the comment.
repliesNumber of replies in the thread.

Parameters

Name	Type	Required	Description
url	string	Yes	Public YouTube video URL.
limit	integer	No	Max items to return (default 20).

Authentication: send your key as Authorization: Bearer capt_live_.... A typical call costs 20 credits — billed per result, so the exact amount scales with how many items you request. Repeat calls for the same request are served from cache for free (metrics refresh within ~1 hour).

How it works

1. Sign up — get 100 free credits, no card required.
2. Create a key from your dashboard.
3. Send one request to /v1/youtube/comment-replies and parse the JSON response.

Use cases

Sentiment Analysis

Understand how audiences react to content.

Community Insights

Surface FAQs, requests, and recurring themes.

Moderation

Detect spam, abuse, or policy violations at scale.

Market Research

Mine genuine opinions and product feedback.

Frequently asked questions

What does the YouTube Comment Replies API do?+

The YouTube Comment Replies API lets you pull comments with author, text, likes, and replies from a public YouTube video using one GET request to /v1/youtube/comment-replies. It returns clean JSON — no OAuth or scraping setup required.

How many credits does the YouTube Comment Replies API cost?+

Each successful call costs 20 credits. Responses are cached for 24 hours, and cached results cost 0 credits. Failed or empty results are never charged.

Do I need a YouTube API key or OAuth?+

No. A single Captapi key works across YouTube, TikTok, Instagram, and Facebook. We handle proxies, rate limits, retries, and authentication for you.

Is the YouTube Comment Replies API suitable for production use?+

Yes. It is a stable REST endpoint with predictable JSON, automatic retries, and a shared 24-hour cache. Use it for RAG pipelines, analytics, monitoring, and content automation.

More YouTube APIs

YouTube Transcript API YouTube Summarizer API YouTube Video Details API YouTube Comments API YouTube Channel Details API YouTube Search API

Ready to use the YouTube Comment Replies API?

Get started free