video-watcher

video-watcher is a skill for Claude Code, Codex from leecyno1/boutique-skills. It costs 38 tokens per session (678 once invoked), scanned A, a copy of video-watcher, MIT.

A transcript-fetching tool for YouTube and Bilibili videos. A transcript is the written version of spoken video content.

In plain words
What is it for?
Use it to retrieve transcripts for summarization, questions and answers, or extracting information, with optional language selection.
Why use it?
It lets an agent work with a video’s words without manually watching the entire recording, when subtitles or transcripts are available.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to retrieve transcripts for summarization, questions and answers, or extracting information, with optional language selection.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/leecyno1/boutique-skills/bilibili-youtube-watcher
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 leecyno1/boutique-skills --skill bilibili-youtube-watcher
Clone the repo
git clone --depth 1 https://github.com/leecyno1/boutique-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 video-watcher

README.md
[![agentmods](https://agentmods.dev/badge/skills/leecyno1/boutique-skills/bilibili-youtube-watcher/github.svg)](https://agentmods.dev/skills/leecyno1/boutique-skills/bilibili-youtube-watcher)
Your own site
<a href="https://agentmods.dev/skills/leecyno1/boutique-skills/bilibili-youtube-watcher"><img src="https://agentmods.dev/badge/skills/leecyno1/boutique-skills/bilibili-youtube-watcher/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 video-watcher

Your own site · 80×15
<a href="https://agentmods.dev/skills/leecyno1/boutique-skills/bilibili-youtube-watcher"><img src="https://agentmods.dev/badge/skills/leecyno1/boutique-skills/bilibili-youtube-watcher.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 678 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod 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 $0.00038 $0.00678
Opus 5 $0.00019 $0.00339
Sonnet 5 $0.00008 $0.00136
Haiku 4.5 $0.00004 $0.00068

Measured 9d ago against content hash 6bf8e0a81277, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

video-watcher 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 9d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/get_transcript.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.

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.

Origin

This is a copy

100% identical to video-watcher — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/default/bilibili-youtube-watcher/SKILL.md · 85 lines

What it actually says

Video Watcher

Fetch transcripts from YouTube and Bilibili videos to enable summarization, QA, and content extraction.

Supported Platforms

  • YouTube (youtube.com, youtu.be)
  • Bilibili (bilibili.com, b23.tv)

Usage

Get Transcript (Auto-detect Platform)

python3 {baseDir}/scripts/get_transcript.py "VIDEO_URL"

Specify Language

python3 {baseDir}/scripts/get_transcript.py "VIDEO_URL" --lang zh-CN

Examples

YouTube Video

python3 {baseDir}/scripts/get_transcript.py "https://www.youtube.com/watch?v=dQw4w9WgXcQ"

Bilibili Video

python3 {baseDir}/scripts/get_transcript.py "https://www.bilibili.com/video/BV1xx411c7mD"

With Custom Language

# Get English subtitles for a Bilibili video
python3 {baseDir}/scripts/get_transcript.py "https://bilibili.com/video/..." --lang en

# Get Chinese subtitles for a YouTube video
python3 {baseDir}/scripts/get_transcript.py "https://youtube.com/watch?v=..." --lang zh-CN

Default Languages

Platform Default Language
YouTube en (English)
Bilibili zh-CN (Chinese)

Common Language Codes

  • en - English
  • zh-CN - Simplified Chinese (简体中文)
  • zh-TW - Traditional Chinese (繁體中文)
  • ja - Japanese
  • ko - Korean
  • es - Spanish
  • fr - French
  • de - German

Notes

  • Requires yt-dlp to be installed and available in PATH
  • Works with videos that have closed captions (CC) or auto-generated subtitles
  • Automatically detects platform from URL
  • If no subtitles available, the script will fail with an error message
  • yt-dlp natively supports both YouTube and Bilibili
Files

What ships with it

4 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. 9d ago First seen · 85 lines · 38 tokens per session scan A 6bf8e0a81277

Subscribe to this mod's changes

video-watcher is a skill published in the GitHub repository leecyno1/boutique-skills (5 stars, last pushed today), licensed MIT. It adds 38 tokens to every session and 678 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to video-watcher, differing in 0 lines, and is treated as a copy.

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