YouTube Comment Replies API
Pull replies under a YouTube comment — author, text, likes, and time.
GET request to /v1/youtube/comment-replies that responds with clean JSON and costs 2 credits. Pass cache=true for a free 24h cache hit; default is always fresh. Start with 100 free credits — no credit card.What is the YouTube Comment Replies API?
The YouTube Comment Replies API lets you pull comments with author, text, likes, and replies for YouTube comment replies with a single REST call. No OAuth, no infrastructure to maintain, and no platform SDKs — send the request, get clean structured JSON back. Pass cache=true to serve from the 24h shared cache (0 credits on hit); default is always fresh.
What you get
- Comment or review text, author name, and handle
- Like counts and timestamps when available
- Pagination via the limit parameter
- Use the matching Comment Replies endpoint when you need nested replies
Try it
Fill in the parameters below and copy a ready-to-run request, or open the live Playground to run it against your account (no API key paste).
Parameters
curl "https://api.captapi.com/v1/youtube/comment-replies?url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DdQw4w9WgXcQ&comment_id=7311234567890123456" \
-H "Authorization: Bearer capt_live_..."
# or: -H "x-api-key: capt_live_..."Edit the parameters and the code updates instantly. Switch languages and hit copy.
Example response
{
"success": true,
"data": {
"url": "https://www.youtube.com/watch?v=dQw4w9WgXcQ",
"videoId": "dQw4w9WgXcQ",
"commentId": "Ugzge340dBgB75hWBm54AaABAg",
"totalReturned": 10,
"replies": [
{
"id": "Ugzge340dBgB75hWBm54AaABAg.AHE8_QAWJx9AHE9eIiztxR",
"author": "@linganguliguliwatcha",
"authorAvatarUrl": "https://yt3.ggpht.com/AbGqKNjK9k5tyOqdV7cdXx-GgnGuuGQ5wj8RN42U5YCDvYHT0vaOKXGFahR36iaDPseGN08DjQ=s88-c-k-c0x00ffffff-no-rj",
"authorIsVerified": false,
"authorIsChannelOwner": false,
"text": "YOUTUBE AND ONE LIKE WOOHAAAAH",
"likeCount": 7100,
"replyCount": 5,
"hasCreatorHeart": true,
"publishedTimeText": "1 year ago",
"replyToId": "Ugzge340dBgB75hWBm54AaABAg"
},
{
"id": "Ugzge340dBgB75hWBm54AaABAg.AHE8_QAWJx9AHEAB_-JmDA",
"author": "@_bugrabilgin",
"authorAvatarUrl": "https://yt3.ggpht.com/LvMpN24GYYr8w43sGoMeYZYejDPJz_skehI6jm_XGGhfM5YeRa9OOsaplj60LnFNehE79ZxImg=s88-c-k-c0x00ffffff-no-rj",
"authorIsVerified": false,
"authorIsChannelOwner": false,
"text": "HEY YOUTUBE",
"likeCount": 3000,
"replyCount": 2,
"hasCreatorHeart": true,
"publishedTimeText": "1 year ago",
"replyToId": "Ugzge340dBgB75hWBm54AaABAg"
},
{
"id": "Ugzge340dBgB75hWBm54AaABAg.AHE8_QAWJx9AHEAOCSlaNN",
"author": "@NashiraArif",
"authorAvatarUrl": "https://yt3.ggpht.com/ytc/AIdro_n1guDiz8iQIUgFGnmh5VA5PJlNSiWQwX3Ik0ywlPv8JUDRXZiF6wxDvbC7F3YSi1BdlA=s88-c-k-c0x00ffffff-no-rj",
"authorIsVerified": false,
"authorIsChannelOwner": false,
"text": "new comment alert",
"likeCount": 2000,
"replyCount": 0,
"hasCreatorHeart": true,
"publishedTimeText": "1 year ago",
"replyToId": "Ugzge340dBgB75hWBm54AaABAg"
},
{
"id": "Ugzge340dBgB75hWBm54AaABAg.AHE8_QAWJx9AHEAQwtwdoZ",
"author": "@jennaortega-m4m",
"authorAvatarUrl": "https://yt3.ggpht.com/ytc/AIdro_lVdgv6VK0IOScTdHt1R4NdIFdRkvG2Y1jsrCR_otHBLogTg1YjnUt3k9YQBrmAT3VFLg=s88-c-k-c0x00ffffff-no-rj",
"authorIsVerified": false,
"authorIsChannelOwner": false,
"text": "oop 3rd didnt realise youtube was here😄",
"likeCount": 909,
"replyCount": 0,
"hasCreatorHeart": true,
"publishedTimeText": "1 year ago",
"replyToId": "Ugzge340dBgB75hWBm54AaABAg"
},
{
"id": "Ugzge340dBgB75hWBm54AaABAg.AHE8_QAWJx9AHEB5iPJLDp",
"author": "@TheAngelofBattle99",
"authorAvatarUrl": "https://yt3.ggpht.com/92UP2htp8mRB1oRt7tZ1bmid5hSmtrt-fNUlOH0sgx0zBFEwLSQ7OT0Vo8nuyWC3XSyUxNl3oMQ=s88-c-k-c0x00ffffff-no-rj",
"authorIsVerified": false,
"authorIsChannelOwner": false,
"text": "He's ingrained in our brains at this point. Such a devoted man.",
"likeCount": 698,
"replyCount": 0,
"hasCreatorHeart": true,
"publishedTimeText": "1 year ago",
"replyToId": "Ugzge340dBgB75hWBm54AaABAg"
}
]
}
}Billing metadata is returned in response headers: X-Captapi-Credits (credits charged), X-Captapi-Cache (hit or miss), and X-Captapi-Source. Failed requests (4xx/5xx) are never charged. See the full list of error codes in the error reference.
Response structure
A successful call returns success, cached, creditsUsed, and a data object with the following fields:
Top-level fields
urlCanonical URL of the item.videoIdPlatform video ID.commentIdComment id. Example: "Ugzge340dBgB75hWBm54AaABAg".totalReturnedNumber of items returned in this response.
Replies
Each item in replies contains:
idStable platform ID for the item.authorAuthor name or handle.authorAvatarUrlProfile picture URL of the person who wrote the comment.authorIsVerifiedWhether the author is verified.authorIsChannelOwnerWhether the author owns the channel.textText content.likeCountLike count.replyCountHow many replies this comment has. Use Comment Replies with this comment's id to fetch them.hasCreatorHeartWhether the creator hearted the comment.publishedTimeTextPublished time text. Example: "1 year ago".replyToIdReply to id. Example: "Ugzge340dBgB75hWBm54AaABAg".
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
| url | string | Yes | Public YouTube video URL, e.g. https://youtube.com/watch?v=ID. Not a TikTok/Instagram/Facebook URL. The URL platform must match this endpoint's platform. Do not pass cross-platform URLs, e.g. YouTube to TikTok, Instagram to Facebook, LinkedIn to X/Twitter, or Pinterest to Rumble. |
| comment_id | string | Yes | ID of the parent comment to fetch replies for (from the comments endpoint). |
| limit | integer | No | Max items to return (default 50, max 500). Billed per result. |
| cache | boolean | No | Set true to serve from the 24h response cache. Default false — always fetch fresh data. |
Authentication: send your key as Authorization: Bearer capt_live_.... A typical call costs 2 credits. Pass cache=true for a free 24h cache hit; default is always fresh.
youtube_comment_replies via @captapi/mcp. Set it up →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-repliesand 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 comment replies using one GET request to /v1/youtube/comment-replies. It returns clean JSON — no OAuth or infrastructure setup required.
How many credits does the YouTube Comment Replies API cost?+
Each successful call costs 2 credits. Pass cache=true to serve from the 24h shared cache (0 credits on hit); default is always fresh. Failed or empty results are never charged.
Do I need a YouTube API key or OAuth?+
No. A single Captapi key works across every platform Captapi supports — YouTube, TikTok, Instagram, Facebook, Twitter/X, Reddit, Threads, Bluesky, Pinterest, LinkedIn, Rumble, Spotify, Kwai, and more. 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 and automatic retries. Pass cache=true to serve from the 24h shared cache (0 credits on hit); default is always fresh. Use it for analytics, monitoring, and content automation.
More YouTube APIs
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