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Use when the spoken content of a YouTube video is needed — even if not explicitly requested: pasted video links or IDs, requests to summarize, quote, transcribe, translate, fact-check, or extract anything from a video. Also use for research or learning when a video is the source. Not for uploads or account management.
Passed 17 of 20 test cases with the skill, and 8 of 20 without it.
and 10 more in the full report
11 fixed9 passed either way3 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 11 test cases the skill fixed. Same model, same prompt, with and without the skill.
If the TRANSCRIPT_API_KEY environment variable is not configured, where in the project repository are setup instructions located to obtain and store the API key?
| Checked | Without skill | With skill |
|---|---|---|
| References setup guide at references/auth-setup.md | Missed | Passed |
The instructions your model reads when the skill loads.
Fetch video transcripts via TranscriptAPI.com.
If $TRANSCRIPT_API_KEY is not set, read references/auth-setup.md and follow the instructions there to get and store the key.
Every request needs two headers:
Bearer $TRANSCRIPT_API_KEYHermesAgent/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 https://transcriptapi.com/api/v2/youtube/transcript?video_url=VIDEO_URL&format=text&include_timestamp=true&send_metadata=true
Authorization: Bearer $TRANSCRIPT_API_KEY
User-Agent: YourAgent/1.0
| Param | Required | Default | Values |
|---|---|---|---|
video_url | yes | — | YouTube URL or 11-char video ID |
format | no | json | json, text |
include_timestamp | no | true | true, false |
send_metadata | no | false | true, false |
Accepts: full URLs (youtube.com/watch?v=ID), short URLs (youtu.be/ID), shorts (youtube.com/shorts/ID), or bare video IDs.
Default: Always use format=text&include_timestamp=true&send_metadata=true unless user specifies otherwise.
Response (format=json):
{
"video_id": "dQw4w9WgXcQ",
"language": "en",
test cases passed, vs 8 / 20 without
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