YouTube Transcript API

curl -X GET "https://tunelio.dev/transcript?url=dQw4w9WgXcQ&lang=en&format=json" \
  -H "Authorization: Bearer tnl_…"

const res = await fetch(
  "https://tunelio.dev/transcript?" + new URLSearchParams({
    url: "dQw4w9WgXcQ",
    lang: "en",
    format: "json",
  }),
  { headers: { Authorization: "Bearer " + process.env.TUNELIO_KEY } }
);
const data = await res.json();
console.log(data.full_text);
console.log(data.segments); // [{ start: 1.36, duration: 1.68, text: "..." }]

import os, requests

res = requests.get(
    "https://tunelio.dev/transcript",
    params={"url": "dQw4w9WgXcQ", "lang": "en", "format": "json"},
    headers={"Authorization": f"Bearer {os.environ['TUNELIO_KEY']}"}
)
data = res.json()
print("Title:", data["title"])
print("Full text:", data["full_text"])
for seg in data["segments"]:
    print(f"[{seg['start']}s -> +{seg['duration']}s] {seg['text']}")

{
  "video_id": "dQw4w9WgXcQ",
  "title": "Rick Astley - Never Gonna Give You Up",
  "language": "en",
  "language_name": "English",
  "is_generated": false,
  "type": "manual",
  "available_languages": [
    { "code": "en", "name": "English", "is_generated": false, "type": "manual" },
    { "code": "es", "name": "Spanish", "is_generated": true,  "type": "auto" }
  ],
  "segments_count": 61,
  "segments": [
    { "start": 18.64, "duration": 3.24, "text": "We're no strangers to love" },
    { "start": 21.88, "duration": 2.60, "text": "You know the rules and so do I" }
  ],
  "full_text": "We're no strangers to love You know the rules and so do I …",
  "status": "ok"
}