Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add rameerez/claude-code-startup-skills --skill download-videogit clone --depth 1 https://github.com/rameerez/claude-code-startup-skillsWrote 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/rameerez/claude-code-startup-skills/download-video)<a href="https://agentmods.dev/skills/rameerez/claude-code-startup-skills/download-video"><img src="https://agentmods.dev/badge/skills/rameerez/claude-code-startup-skills/download-video/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/rameerez/claude-code-startup-skills/download-video"><img src="https://agentmods.dev/badge/skills/rameerez/claude-code-startup-skills/download-video.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 | $0.00047 | $0.00545 |
| Opus 5 | $0.00023 | $0.00272 |
| Sonnet 5 | $0.00009 | $0.00109 |
| Haiku 4.5 | $0.00005 | $0.00055 |
Grade A, and why
download-video 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 10d 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.
What it actually says
Video Download Skill
Download a video from $ARGUMENTS (a social media URL) to the current directory using yt-dlp.
Supports X/Twitter, YouTube, Instagram, TikTok, Reddit, and 1400+ other sites.
Process
- Verify yt-dlp is installed - check with
which yt-dlp, suggestbrew install yt-dlpif missing - Download the video in the best available quality
- Report results with filename, format, and file size
Download Command
yt-dlp -o "%(title)s.%(ext)s" "URL"
Options Reference
# Best video+audio (default)
yt-dlp -o "%(title)s.%(ext)s" "URL"
# List available formats first
yt-dlp -F "URL"
# Pick a specific format
yt-dlp -f "FORMAT_ID" -o "%(title)s.%(ext)s" "URL"
# Audio only (e.g. for podcasts)
yt-dlp -x --audio-format mp3 -o "%(title)s.%(ext)s" "URL"
# Custom output directory
yt-dlp -o "/path/to/dir/%(title)s.%(ext)s" "URL"
Platform-Specific Notes
| Platform | Notes |
|---|---|
| X/Twitter | Works with tweet URLs containing video. May need --cookies-from-browser for age-restricted content |
| YouTube | Supports playlists, channels, shorts. Use -F to pick resolution |
| Reels and stories supported. May require authentication for private accounts | |
| TikTok | Direct video URLs work. Watermark-free when available |
| Handles v.redd.it links with audio merging automatically |
After Download
- Verify the file:
ls -lh *.mp4(or whatever extension was downloaded) - Report the filename, format, resolution, and file size to the user
- If the user wants subtitles or a transcript, suggest using
/transcribe-video
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.
- 10d ago First seen · 60 lines · 47 tokens per session scan A 352d71197c46
download-video is a skill published in the GitHub repository rameerez/claude-code-startup-skills (29 stars, last pushed 6mo ago), licensed MIT. It adds 47 tokens to every session and 545 once invoked, about $0.0002 per session on Opus 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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