YouTube Transcript & Captions · Transcript

import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://youtube.use.x402atlas.com/transcript", {
  method: "GET",
});
const data = await res.json();

curl -X GET \
  "https://youtube.use.x402atlas.com/transcript?v=iG9CE55wbtY" \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "available_transcripts": [
    {
      "language_code": "en",
      "selected": true
    },
    {
      "language_code": "en",
      "type": "asr"
    },
    {
      "language_code": "fr"
    }
  ],
  "chapters": [
    {
      "end_ms": 42000,
      "start_ms": 0,
      "start_time_text": "0:00",
      "title": "Introduction"
    },
    {
      "end_ms": 115000,
      "start_ms": 42000,
      "start_time_text": "0:42",
      "title": "Three themes"
    }
  ],
  "language_code": "en",
  "queried_at": "2026-07-24T12:00:00Z",
  "segments": [
    {
      "end_ms": 29678,
      "start_ms": 27103,
      "start_time_text": "0:27",
      "text": "Good morning. How are you?"
    },
    {
      "end_ms": 31105,
      "start_ms": 29702,
      "start_time_text": "0:29",
      "text": "(Audience) Good."
    }
  ],
  "text": "Good morning. How are you? (Audience) Good. It's been great, hasn't it?",
  "video_id": "iG9CE55wbtY"
}