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universal-media-downloader

universal-media-downloader is a skill for Claude Code, Codex from cat-xierluo/legal-skills. It costs 234 tokens per session (2,321 once invoked), scanned B, original, no licence file.

A tool for downloading media from supported video websites and podcast links, including services such as Douyin, Bilibili, YouTube, and some podcast platforms.

In plain words
What is it for?
Saving video or audio from links the user is allowed to download, including podcast episodes with direct audio sources or RSS links.
Why use it?
It avoids having to find and save the underlying media file manually. When access restrictions prevent downloading, it can retry with provided cookies or point to official offline or export options.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

not rated 778repo +10 changed 1mo ago B scan 234 tokens no licence

Good fit Saving video or audio from links the user is allowed to download, including podcast episodes with direct audio sources or RSS links.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/cat-xierluo/legal-skills/universal-media-downloader
View source ↗ cat-xierluo/legal-skills cat-xierluo.github.io
Install

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.

Any agent
npx skills add cat-xierluo/legal-skills --skill universal-media-downloader
Clone the repo
git clone --depth 1 https://github.com/cat-xierluo/legal-skills

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for universal-media-downloader

README.md
[![agentmods](https://agentmods.dev/badge/skills/cat-xierluo/legal-skills/universal-media-downloader/github.svg)](https://agentmods.dev/skills/cat-xierluo/legal-skills/universal-media-downloader)
Your own site
<a href="https://agentmods.dev/skills/cat-xierluo/legal-skills/universal-media-downloader"><img src="https://agentmods.dev/badge/skills/cat-xierluo/legal-skills/universal-media-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.

agentmods 80×15 button for universal-media-downloader

Your own site · 80×15
<a href="https://agentmods.dev/skills/cat-xierluo/legal-skills/universal-media-downloader"><img src="https://agentmods.dev/badge/skills/cat-xierluo/legal-skills/universal-media-downloader.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 234 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,321 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00234 $0.02321
Opus 5.5 $0.00094 $0.00928
Sonnet 5.5 $0.00047 $0.00464
Haiku 4.5 $0.00023 $0.00232

Measured 1mo ago against content hash 6f6c43335e57, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

universal-media-downloader scanned grade B with 1 finding 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.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/download_douyin_note.py, scripts/download_douyin_video_nocookie.py, scripts/download_media.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

| `ffmpeg`（可选，用于字幕提取和音频转换） | macOS: `brew install ffmpeg`<br>Linux: `sudo apt-get install ffmpeg` |
skills/universal-media-downloader/SKILL.md · 135 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

6 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.

Changes

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.

  1. 1mo ago Changed 6f6c43335e57
  2. 2mo ago Changed · +2 lines · +8 tokens per session 453e6fb12cd5
  3. 2mo ago First seen · 133 lines · 226 tokens per session scan B 359602f64958

Subscribe to this mod's changes

universal-media-downloader is a skill published in the GitHub repository cat-xierluo/legal-skills (778 stars, last pushed yesterday), with no licence file. It adds 234 tokens to every session and 2,321 once invoked, about $0.0009 per session on Opus 5.5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

universal-media-downloader compared with skills from other repositories

universal-media-downloader next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
universal-media-downloadercat-xierluo/legal-skillsSkill778yesterdaynoneB234Claude Code, Codex
imagegenopenai/codexSkill133kyesterdayApache-2.0A113Codex
playwright-climicrosoft/playwrightSkill99kyesterdayApache-2.0A19Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79k4d agoMITA200Claude Code, Codex
systematic-debuggingobra/superpowersSkill313k3d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143ktodayMITA95Claude Code
next-partial-prefetching-adoptionvercel/next.jsSkill143ktodayMITA103Claude Code