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 mrocker/social-data-mcp --skill youtube-transcriptsgit clone --depth 1 https://github.com/mrocker/social-data-mcpWrote 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/mrocker/social-data-mcp/youtube-transcripts)<a href="https://agentmods.dev/skills/mrocker/social-data-mcp/youtube-transcripts"><img src="https://agentmods.dev/badge/skills/mrocker/social-data-mcp/youtube-transcripts/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/mrocker/social-data-mcp/youtube-transcripts"><img src="https://agentmods.dev/badge/skills/mrocker/social-data-mcp/youtube-transcripts.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 | $0.00078 | $0.00556 |
| Opus 5.5 | $0.00031 | $0.00222 |
| Sonnet 5.5 | $0.00016 | $0.00111 |
| Haiku 4.5 | $0.00008 | $0.00056 |
Grade A, and why
youtube-transcripts scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 22d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -s -X POST "https://api.apify.com/v2/acts/nick.cheng~youtube-transcript-scraper/run-sync-get-dataset-items?token=$APIFY_TOKEN" \ What it actually says
YouTube transcripts
Pay-per-result Apify Actor nick.cheng/youtube-transcript-scraper. No API key, no login.
$0.005 per transcript delivered, same on every Apify plan; videos without captions cost nothing.
Needs APIFY_TOKEN (free account: https://console.apify.com/account/integrations).
When to use
- "What does this video say / summarize it / quote the part about X" →
videoUrls - "Transcripts of a channel's latest uploads" →
channelUrls+maxVideosPerChannel - Skip what you do not need before paying:
minDurationSeconds: 61(drops Shorts),minViews,titleContains
Call it
curl -s -X POST "https://api.apify.com/v2/acts/nick.cheng~youtube-transcript-scraper/run-sync-get-dataset-items?token=$APIFY_TOKEN" \
-H 'Content-Type: application/json' \
-d '{"videoUrls":["https://www.youtube.com/watch?v=aircAruvnKk"]}'
Or as an MCP tool: https://mcp.apify.com/?tools=nick.cheng/youtube-transcript-scraper.
Output rows
itemType: "transcript"—videoId,url,title,channelId,channelName,durationSeconds,transcriptLanguage,transcriptType(manual/auto-generated),transcript(one string),subtitles[0].segments({start, end, text}in seconds),availableCaptionLanguageserror: true, chargedForThis: false— no captions on YouTube, or the video is unavailable; reason given
Limits
YouTube's own captions only — no speech recognition of its own, so a video without captions gets no
transcript (and no charge). One language per video (the spoken one). No members-only, private or
age-restricted videos. For views, likes and publish dates use nick.cheng/youtube-video-channel-scraper
(skill youtube-video-channel), which can include the transcript too.
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.
- 22d ago First seen · 41 lines · 78 tokens per session scan A 168fde0adb98
youtube-transcripts is a skill published in the GitHub repository mrocker/social-data-mcp (0 stars, last pushed 22d ago), licensed MIT. It adds 78 tokens to every session and 556 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-18.
youtube-transcripts compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| youtube-transcriptsmrocker/social-data-mcp | Skill | 0 | 22d ago | MIT | A | 78 | Claude Code, Codex |
| imagegenopenai/codex | Skill | 134k | today | Apache-2.0 | A | 113 | Codex |
| local-ai-agentsmicrosoft/ai-agents-for-beginners | Skill | 79k | 2d ago | MIT | A | 200 | Claude Code, Codex |
| playwright-climicrosoft/playwright | Skill | 100k | today | Apache-2.0 | A | 19 | Claude Code |
| browser-automationopenclaw/openclaw | Skill | 394k | today | MIT | A | 36 | Claude Code |
| systematic-debuggingobra/superpowers | Skill | 315k | 6d ago | MIT | A | 21 | Claude Code |
| next-cache-components-adoptionvercel/next.js | Skill | 143k | today | MIT | A | 95 | Claude Code |