YouTube Transcript API Skill

Use this skill when the user wants to extract transcripts from YouTube videos, transcribe videos without captions, translate video content, or process multiple videos in batch.

When to Use

• User asks to get a transcript/subtitles/captions from a YouTube video
• User wants to transcribe a YouTube video that has no captions (ASR)
• User wants to translate a YouTube video transcript to another language
• User needs to process multiple YouTube videos at once
• User wants to build an AI/LLM pipeline that uses YouTube video content
• User wants to repurpose video content into text (blog posts, summaries, etc.)

API Overview

Base URL:

https://youtubetranscript.dev/api/v2

Authentication: Bearer token via

Authorization: Bearer YOUR_API_KEY

Users can get a free API key at youtubetranscript.dev.

Endpoints

POST

/api/v2/transcribe

POST

/api/v2/batch

GET

/api/v2/jobs/{job_id}

GET

/api/v2/batch/{batch_id}

Request Fields

video

video_ids

language

"es"

"fr"

source

auto

manual

asr

format

timestamp

paragraphs

words

webhook_url

source="asr"

Credit Costs

Examples

Basic Transcript Extraction (Python)

import requests

API_KEY = "your_api_key"

response = requests.post(
    "https://youtubetranscript.dev/api/v2/transcribe",
    headers={
        "Authorization": f"Bearer {API_KEY}",
        "Content-Type": "application/json",
    },
    json={"video": "dQw4w9WgXcQ"}
)

data = response.json()
for segment in data["data"]["transcript"]:
    print(f"[{segment['start']:.1f}s] {segment['text']}")

Basic Transcript Extraction (JavaScript/Node.js)

const response = await fetch("https://youtubetranscript.dev/api/v2/transcribe", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({ video: "dQw4w9WgXcQ" }),
});

const { data } = await response.json();
console.log(data.transcript);

Using the Node.js SDK

npm install youtube-audio-transcript-api

import { YouTubeTranscript } from "youtube-audio-transcript-api";

const yt = new YouTubeTranscript({ apiKey: "your_api_key" });

// Simple extraction
const result = await yt.getTranscript("dQw4w9WgXcQ");

// With translation
const translated = await yt.transcribe({
  video: "dQw4w9WgXcQ",
  language: "es",
});

// Batch (up to 100 videos)
const batch = await yt.batch({
  video_ids: ["dQw4w9WgXcQ", "jNQXAC9IVRw", "9bZkp7q19f0"],
});

Basic Transcript Extraction (cURL)

curl -X POST https://youtubetranscript.dev/api/v2/transcribe \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"video": "dQw4w9WgXcQ"}'

Batch Processing (up to 100 videos)

curl -X POST https://youtubetranscript.dev/api/v2/batch \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"video_ids": ["dQw4w9WgXcQ", "jNQXAC9IVRw", "9bZkp7q19f0"]}'

Translation

Add

"language": "es"

curl -X POST https://youtubetranscript.dev/api/v2/transcribe \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"video": "dQw4w9WgXcQ", "language": "es"}'

ASR Transcription (videos without captions)

For videos that don't have captions, use ASR with a webhook:

curl -X POST https://youtubetranscript.dev/api/v2/transcribe \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"video": "VIDEO_ID", "source": "asr", "webhook_url": "https://yoursite.com/webhook"}'

This returns immediately with

status: "processing"

GET /api/v2/jobs/{job_id}

Error Handling

invalid_request

invalid_api_key

payment_required

no_captions

rate_limit_exceeded

Retry-After

Important Notes

• Always ask the user for their API key if they haven't provided one. Free keys are available at youtubetranscript.dev.
• Omitting the

  language

  parameter returns the best available transcript without translation (saves credits).
• ASR is async — always use a webhook URL or poll the jobs endpoint.
• Batch endpoint accepts both YouTube URLs and 11-character video IDs.
• Re-fetching an already-owned transcript costs 0 credits.

Resources

• Website
• Full API Docs & OpenAPI Spec
• npm SDK
• Pricing