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subtitles

subtitles

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Use when subtitles or the spoken text of a YouTube video is needed: pasted video links or IDs, requests to translate a video, read along, follow foreign-language content, or extract what was said. Also use for language learning or accessibility. Fetches timestamped subtitles from any YouTube video. Not for uploading subtitles or account management.

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Updated 9/29/2026
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SKILL.md
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name
subtitles
description

Use when subtitles or the spoken text of a YouTube video is needed: pasted video links or IDs, requests to translate a video, read along, follow foreign-language content, or extract what was said. Also use for language learning or accessibility. Fetches timestamped subtitles from any YouTube video. Not for uploading subtitles or account management.

version
1.5.1

Subtitles

Fetch YouTube video subtitles via TranscriptAPI.com.

Setup

If $TRANSCRIPT_API_KEY is not set, read references/auth-setup.md and follow the instructions there to get and store the key.

Required Headers

Every request needs two headers:

  • Authorization: Bearer $TRANSCRIPT_API_KEY
  • User-Agent: your agent's name and version if known (e.g. HermesAgent/0.11.0, ClaudeCode/1.0). Version is optional — agent name alone is fine. Do not omit this header or send a bare default — Cloudflare will return a 403 (error code 1010) and block the request.

GET /api/v2/youtube/transcript

GET https://transcriptapi.com/api/v2/youtube/transcript?video_url=VIDEO_URL&format=text&include_timestamp=false&send_metadata=true
Authorization: Bearer $TRANSCRIPT_API_KEY
User-Agent: YourAgent/1.0
Param Values Use case
video_url YouTube URL or video ID Required
format json, text json for sync'd subs with timing
include_timestamp true, false false for clean text for reading/translation
send_metadata true, false Include title, channel, description

For language learning — clean text without timestamps:

GET https://transcriptapi.com/api/v2/youtube/transcript?video_url=VIDEO_ID&format=text&include_timestamp=false
Authorization: Bearer $TRANSCRIPT_API_KEY
User-Agent: YourAgent/1.0

For translation — structured segments:

GET https://transcriptapi.com/api/v2/youtube/transcript?video_url=VIDEO_ID&format=json&include_timestamp=true
Authorization: Bearer $TRANSCRIPT_API_KEY
User-Agent: YourAgent/1.0

Response (format=json):

{
  "video_id": "dQw4w9WgXcQ",
  "language": "en",
  "transcript": [
    { "text": "We're no strangers to love", "start": 18.0, "duration": 3.5 }
  ]
}

Response (format=text, include_timestamp=false):

{
  "video_id": "dQw4w9WgXcQ",
  "language": "en",
  "transcript": "We're no strangers to love\nYou know the rules and so do I..."
}

Tips

  • Many videos have auto-generated subtitles in multiple languages.
  • Use format=json to get timing for each line (great for sync'd reading).
  • Use include_timestamp=false for clean text suitable for translation apps.

Errors

Code Meaning Action
401 Bad API key Check key
402 No credits transcriptapi.com/billing
403/1010 Cloudflare block Add or fix User-Agent header
404 No subtitles No subtitles available
408 Timeout Retry once after 2s

1 credit per request. Free tier: 100 credits, 300 req/min.

Copy-paste examples

Every request in this file as a ready-to-run one-liner: references/curl-examples.md