YouTube

Comments / Replies

per_call

Fetches a video's comment threads, including author name and avatar, comment text, like count, reply count, pinned/heart flags and timestamps. Pipe it into sentiment analysis, FAQ mining or audience-research reports.

Endpoint

GET /v1/youtube/comments-replies

Price

$1.50

per 1,000 calls · $0.0015 per call

Cost per call

1 credit

Failed calls never charged

Parameters

target

required

string

The YouTube handle, URL or identifier to resolve.

limit

optional

integer

Items to return for list responses. Default 10, max 100.

cursor

optional

string

Pagination cursor returned by a previous response.

Example request

Sandbox calls return deterministic sample data in the live payload shape.

curl

curl "https://api.fastfetchz.com/v1/youtube/comments-replies?target=nasa" \
  -H "X-API-Key: $FASTFETCHZ_KEY"

Example response

200 application/json

{
  "success": true,
  "service": {
    "platform": "YouTube",
    "name": "Comments / Replies",
    "slug": "comments-replies"
  },
  "credits_charged": 1,
  "credits_remaining": 99,
  "latency_ms": 214,
  "data": {
    "comments": [
      {
        "id": "4000039347",
        "author": {
          "username": "commenter_9350",
          "verified": false
        },
        "text": "Great post — sandbox comment text.",
        "like_count": 347,
        "reply_count": 11,
        "created_at": "2026-08-25T10:35:49.014Z"
      },
      {
        "id": "4000016966",
        "author": {
          "username": "commenter_6967",
          "verified": false
        },
        "text": "Great post — sandbox comment text.",
        "like_count": 466,
        "reply_count": 10,
        "created_at": "2026-08-24T10:35:49.014Z"
      }
    ],
    "paging": {
      "has_more": false,
      "next_cursor": null
    }
  }
}

Error codes

StatusCodeMeaning

401invalid_api_keyMissing or unrecognized X-API-Key header. No credits are charged.

402insufficient_creditsYour balance is below the cost of the call. Top up to continue.

403account_suspended / key_revokedThe account is suspended or the key was revoked.

429rate_limitedThe key exceeded its monthly cap or the burst limit. Retry later.

500upstream_errorUnexpected failure while fulfilling the request. Not charged.