Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add trtmn/agent-plugins/plugin install yt-dlpWrote 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/trtmn/agent-plugins/yt-dlp)<a href="https://agentmods.dev/skills/trtmn/agent-plugins/yt-dlp"><img src="https://agentmods.dev/badge/skills/trtmn/agent-plugins/yt-dlp/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/trtmn/agent-plugins/yt-dlp"><img src="https://agentmods.dev/badge/skills/trtmn/agent-plugins/yt-dlp.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 | $0.00109 | $0.01586 |
| Opus 5.5 | $0.00044 | $0.00634 |
| Sonnet 5.5 | $0.00022 | $0.00317 |
| Haiku 4.5 | $0.00011 | $0.00159 |
Grade A, and why
yt-dlp 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 25d 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 — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.
yt-dlp
Download YouTube videos/thumbnails/subtitles, fix up anything Apple TV can't play natively, and (optionally) ship the result to a media server.
First-time setup
The script needs a stable working directory outside the plugin cache — downloads/, an optional cookies.txt, and an optional .env all live there and must survive plugin updates. Create one once:
mkdir -p ~/.claude/yt-dlp
If remote sync or Jellyfin integration is wanted, create ~/.claude/yt-dlp/.env with any of these (all optional — omit a var entirely to disable that feature, there is no working default to fall back to):
# Remote media server to sync downloads to over rsync/SSH.
# Leave both unset to keep downloads local only.
[email protected]
YTDLP_REMOTE_PATH=/path/on/remote/YouTube/
# Jellyfin library refresh, triggered after a successful sync.
JELLYFIN_URL=https://your-jellyfin-server
JELLYFIN_API_KEY=<your-api-key>
JELLYFIN_LIBRARY_ID=<optional-specific-library-id>
If this machine is the remote media server itself (its hostname matches the host portion of YTDLP_REMOTE_HOST), the script copies files locally instead of round-tripping over SSH.
Requirements
uv— runs the script with its dependencies fetched on the fly (yt-dlp,click,requests,python-dotenv); no project install step needed.deno— enables YouTube's JS challenge solver. Without it you'll see warnings and fewer available formats.brew install deno(macOS) or see https://deno.land.ffmpeg/ffprobe— required for the Apple TV compatibility conversion step. If absent, conversion is skipped with a warning (files still download and sync, just not re-encoded).brew install ffmpeg.rsync+ SSH key access to the remote host — only needed ifYTDLP_REMOTE_HOSTis set.cookies.txtin~/.claude/yt-dlp/— optional, helps with age-restricted or private videos.
Usage
/ytdlp <youtube-url>
/ytdlp --thumbnails-only <youtube-url>
/ytdlp --skip-sync <youtube-url>
/ytdlp --skip-convert <youtube-url> # skip the Apple TV compatibility re-encode
/ytdlp --sw-encode <youtube-url> # force CPU (libx265) encode instead of GPU
/ytdlp --thumbnails-only --skip-sync <youtube-url>
What ships with it
1 file 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.
- 25d ago First seen · 103 lines · 109 tokens per session scan A 0fd4d2936f59
yt-dlp is a skill published in the GitHub repository trtmn/agent-plugins (2 stars, last pushed 11d ago), licensed Unlicense. It adds 109 tokens to every session and 1,586 once invoked, about $0.0004 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 2026-09-24.
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