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 ParthGanatra/agent-skills --skill youtube-summarygit clone --depth 1 https://github.com/ParthGanatra/agent-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/parthganatra/agent-skills/youtube-summary)<a href="https://agentmods.dev/skills/parthganatra/agent-skills/youtube-summary"><img src="https://agentmods.dev/badge/skills/parthganatra/agent-skills/youtube-summary/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/parthganatra/agent-skills/youtube-summary"><img src="https://agentmods.dev/badge/skills/parthganatra/agent-skills/youtube-summary.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 | $0.00137 | $0.02953 |
| Opus 5.5 | $0.00055 | $0.01181 |
| Sonnet 5.5 | $0.00027 | $0.00591 |
| Haiku 4.5 | $0.00014 | $0.00295 |
Grade A, and why
youtube-summary 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 2mo 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 — 214 lines — stays where its author put it; the contents beside it link to each section on GitHub.
youtube-summary
Turn a YouTube video into a structured note in the user's Obsidian vault.
When to use
- User pastes a YouTube URL and asks for a summary / takeaways / notes
- User invokes
/youtube-summary <url> - User says something like "write this up", "save this video", etc. with a YouTube link
By default, summaries are built from the transcript only. If the user says the video has important slides (or asks to "include the slides", "the slides matter", a slide-heavy conference talk, etc.), also run the opt-in slide flow in the section below. Do not extract slides unless the user asks for this video specifically — it downloads the full video (~hundreds of MB) and is slow.
Configuration (optional)
The output location is not hardcoded — resolve it at runtime:
~/.claude/skills/youtube-summary/resolve-config.sh
It always succeeds and prints a MODE plus a NOTES_DIR (the absolute folder to
write the note into). Two modes:
MODE=obsidian— an Obsidian vault is configured; it also printsVAULT_NAME,VAULT_PATH,NOTES_SUBFOLDER. The note goes into the vault and is opened in Obsidian; slide images embed via![[wikilinks]].MODE=plain— no vault configured (works out-of-the-box); the note is printed in the reply to the user, not saved to a file. (If slides are being embedded, it's saved toNOTES_DIR= the current directory instead, since the images need to live on disk; slides embed via standard Markdown image links.)
Use the resolver's values as placeholders below ($NOTES_DIR, $VAULT_NAME, …).
Offer Obsidian mode if the user uses Obsidian and you're in MODE=plain:
help them create ~/.config/youtube-summary/config.sh (template:
config.example.sh next to this SKILL.md) with their vault name, absolute path,
and notes subfolder — or set env vars OBSIDIAN_VAULT_NAME /
OBSIDIAN_VAULT_PATH / NOTES_SUBFOLDER for a one-off run.
- Filename:
<video title>.md(sanitize: replace/with-, strip leading/trailing whitespace, no quotes)
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.
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.
- 2mo ago First seen · 214 lines · 137 tokens per session scan A 1547283a2008
youtube-summary is a skill published in the GitHub repository ParthGanatra/agent-skills (7 stars, last pushed 3mo ago), licensed MIT. It adds 137 tokens to every session and 2,953 once invoked, about $0.0005 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 2026-08-31.
youtube-summary compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| youtube-summaryParthGanatra/agent-skills | Skill | 7 | 3mo ago | MIT | A | 137 | Claude Code, Codex |
| declaudingoaustegard/claude-skills | Skill | 158 | yesterday | MIT | A | 223 | Claude Code, Codex |
| generative-thinkingoaustegard/claude-skills | Skill | 158 | yesterday | MIT | A | 152 | Claude Code, Codex |
| swarming-to-greenoaustegard/claude-skills | Skill | 158 | yesterday | MIT | A | 220 | Claude Code |
| developing-preactoaustegard/claude-skills | Skill | 158 | yesterday | MIT | A | 76 | Claude Code, Codex |
| orchestrating-chat-agentsoaustegard/claude-skills | Skill | 158 | yesterday | MIT | A | 104 | Claude Code, Codex |
| compiling-wgsloaustegard/claude-skills | Skill | 158 | yesterday | MIT | A | 206 | Claude Code, Codex |