Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/guia-matthieu/clawfu-skillsnpx agentmods add skills/guia-matthieu/clawfu-skills/youtube-downloaderWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/guia-matthieu/clawfu-skills/youtube-downloader)<a href="https://agentmods.dev/skills/guia-matthieu/clawfu-skills/youtube-downloader"><img src="https://agentmods.dev/badge/skills/guia-matthieu/clawfu-skills/youtube-downloader/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/guia-matthieu/clawfu-skills/youtube-downloader"><img src="https://agentmods.dev/badge/skills/guia-matthieu/clawfu-skills/youtube-downloader.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00043 | $0.01266 |
| Opus 5.5 | $0.00017 | $0.00506 |
| Sonnet 5.5 | $0.00009 | $0.00253 |
| Haiku 4.5 | $0.00004 | $0.00127 |
Grade A, and why
youtube-downloader scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 185 lines — stays where its author put it; the contents beside it link to each section on GitHub.
YouTube Downloader
Download YouTube videos, extract audio, and get transcripts using yt-dlp - the most reliable YouTube extraction tool.
When to Use This Skill
- Competitor research - Download and analyze competitor videos
- Content repurposing - Extract audio for podcasts or transcripts for blogs
- Training material - Archive webinars and tutorials
- Quote extraction - Get transcripts for pulling quotable moments
- Offline access - Save videos for travel or presentations
What Claude Does vs What You Decide
| Claude Does | You Decide |
|---|---|
| Structures production workflow | Final creative direction |
| Suggests technical approaches | Equipment and tool choices |
| Creates templates and checklists | Quality standards |
| Identifies best practices | Brand/voice decisions |
| Generates script outlines | Final script approval |
Dependencies
pip install yt-dlp click
# Optional for transcription:
pip install openai-whisper
Commands
Download Video
python scripts/main.py download "https://youtube.com/watch?v=..." --format mp4
python scripts/main.py download "https://youtube.com/watch?v=..." --quality 1080p
Extract Audio
python scripts/main.py audio "https://youtube.com/watch?v=..." --format mp3
python scripts/main.py audio "https://youtube.com/watch?v=..." --format wav
Get Transcript
python scripts/main.py transcript "https://youtube.com/watch?v=..."
python scripts/main.py transcript "https://youtube.com/watch?v=..." --translate en
Download Playlist
python scripts/main.py playlist "https://youtube.com/playlist?list=..." --limit 10
python scripts/main.py playlist "https://youtube.com/playlist?list=..." --audio-only
Get Metadata
python scripts/main.py info "https://youtube.com/watch?v=..."
python scripts/main.py info "https://youtube.com/watch?v=..." --format json
Examples
Example 1: Research Competitor Content
# Get video metadata
python scripts/main.py info "https://youtube.com/watch?v=ABC123"
# Output:
# Title: How We Grew to $1M ARR
# Channel: SaaS Founder
# Duration: 15:32
# Views: 45,230
# Published: 2024-01-15
# Tags: saas, growth, startup
# Download transcript for analysis
python scripts/main.py transcript "https://youtube.com/watch?v=ABC123"
# Output: how-we-grew-to-1m-arr.txt
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 185 lines · 43 tokens per session scan A 0f0691a9c416
youtube-downloader is a skill published in the GitHub repository guia-matthieu/clawfu-skills (150 stars, last pushed 27d ago), licensed MIT. It adds 43 tokens to every session and 1,266 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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