Skills directory · page 84

Development workflow for the ynh codebase. Build, test, lint, and format in the right order.

Choose, declare and calibrate the sensors a project needs, then gate on them with ynh check. Use when a harness has no sensors, when ynh check reports nothing useful, or when setting up an agent loop that needs something to converge against.

Guide graduation from a personal harness to a team setup with delegation. Creates a team harness that delegates to personal harnesses.

Diagnose a ynh setup that is not working — a harness that will not install, a launcher that is not found, a vendor that cannot see the skills, instructions that are not applied, or a check that gates for no visible reason. Use when something is broken and it is not obvious why.

Fast CLI-first LLM council, bundler, and multimodal gateway. Use ONLY when user explicitly mentions "yoetz", "yoetz ask", "yoetz council", "yoetz review", "yoetz generate", "yoetz bundle", "yoetz browser". NOT triggered by generic "second opinion" or "ask another model" requests.

The ultimate YouTube creator skill. Covers channel audits, video SEO, retention-engineered scripts, hook writing, thumbnail briefs, content strategy, content calendars, Shorts optimisation, analytics interpretation, monetisation planning, competitor research, cross-platform repurposing, upload metadata packages, and data-driven video idea generation. Triggers on: "youtube", "channel", "video", "views", "subscribers", "watch time", "shorts", "thumbnail", "CTR", "retention", "monetize", "script", "hook", "upload", "youtube audit", "video ideas", "content calendar", "competitor analysis", "repurpose video", "youtube seo", "youtube strategy", "youtube analytics".

Download YouTube videos, identify compelling clips from transcripts, cut clips with ffmpeg, and generate platform-optimized on-screen text and captions. Complete workflow from URL to publishable clips.

YouTube data API: search videos, Shorts and channels, then pull video metadata, comments and replies, transcripts, related videos, download streams, channel info, videos and community posts, and a single community post with its comments. Returns title, view count, duration, published time, channel and caption fields as JSON. 17 endpoints, 1-5 credits each.

Download YouTube video transcripts when user provides a YouTube URL or asks to download/get/fetch a transcript from YouTube. Also use when user wants to transcribe or get captions/subtitles from a YouTube video.

Use for any YouTube URL, video ID or @handle, or a request for transcripts, video search, channel, playlist or new-upload monitoring. Fetches them with yt-dlp, youtube-transcript-api and public RSS feeds, with no API key; no video or audio downloads.

Write a high-retention YouTube script — explainer, tutorial, video essay, review, or talking head — on the packaging then cold-open then value-stack then retention structure that holds watch time past the drop-off cliffs. Use when asked to write a YouTube script, script a long-form or explainer video, draft a video hook, outline a video essay, or turn a blog post or talk into a video. Produces title and thumbnail concepts, multiple hook options, a beat-by-beat body with retention devices, and clear visual and audio cues.

Generate high-CTR YouTube titles and thumbnails using framework fitting method. Match content to 119 proven formulas from Creator Hooks, apply psychological principles, test variations.

Audit a YouTube channel end to end - packaging, consistency, the first fifteen seconds, and what to fix first. Use for "audit my channel", "why isn't my channel growing", "review my videos", or a pasted channel URL.

Write YouTube chapters from a transcript, validated against YouTube's own rules so they actually render. Use for "add chapters", "timestamps", "break this video into sections".

Draft replies to YouTube comments in the creator's voice, triaged by which ones are worth answering. Use for "reply to my comments", "handle the comment section", "someone asked X", or a pasted comment thread.

Turn a raw recording's transcript into an edit decision list - dead air, filler cues and retakes, with timecodes. Use for "edit this", "cut the dead space", "tighten this video", "I rambled", or any request to shorten footage from a transcript.

Write and lint the title and thumbnail for a YouTube video as one pairing, checking truncation, duplication and vagueness before publish. Use for "title ideas", "what should I call this", "thumbnail text", "my CTR is bad", packaging, or any request to rename or repackage an existing video.

Plan a week or a month of YouTube uploads - what to post, when, and in what order, sized to the creator's actual capacity. Use for "plan my week", "content calendar", "what should I post", "I have no idea what to make next".

Read a YouTube Studio audience-retention export and find where viewers actually leave, then say what to change. Use for "why do people stop watching", "my retention is bad", a pasted retention chart or CSV, or "fix my pacing".

Write a YouTube video script from a raw idea - hook options off 21 formulas, scored, then the full spoken script with the retention beats marked. Use whenever the user wants a video script, a hook, an opening line, "what should I say", "write my next video", or is about to record and does not have the first fifteen seconds yet.

Write the description, tags and search-facing text for a YouTube video, aimed at the query a real person types. Use for "write my description", "tags", "SEO", "help this video get found", "nobody is finding this".

Find the Shorts hiding inside a long video and write them, using the transcript to pick self-contained moments. Use for "cut this into shorts", "clip this", "repurpose this video", "what should I clip".

Find what is actually working in the user's niche on YouTube and rank it by how far each video beat its own channel, then name the formula. Use for "what's working right now", "find viral videos in my niche", "why did this blow up", competitor research, or a swipe file.

No-code automation democratizes workflow building. Zapier and Make (formerly Integromat) let non-developers automate business processes without writing code. But no-code doesn't mean no-complexity - these platforms have their own patterns, pitfalls, and breaking points. This skill covers when to use which platform, how to build reliable automations, and when to graduate to code-based solutions. Key insight: Zapier optimizes for simplicity and integrations (7000+ apps), Make optimizes for power

Manage and trigger pre-built Zapier workflows and MCP tool orchestration. Use when user mentions workflows, Zaps, automations, daily digest, research, search, lead tracking, expenses, or asks to "run" any process. Also handles Perplexity-based research and Google Sheets data tracking.

Chunked N-D arrays for cloud storage. Compressed arrays, parallel I/O, S3/GCS integration, NumPy/Dask/Xarray compatible, for large-scale scientific computing pipelines.

Use before high-stakes or multi-file coding (auth, databases, migrations), or when asked to plan carefully and avoid invented APIs. Runs discuss, map, decompose, execute and verify, checking every import and API exists. Not for trivial edits.

Zillow property data API: search listings for sale, for rent or sold, pull one property in full, and read an agent's profile and reviews. Returns price and price history, Zestimate, tax history, beds, baths, living area, days on market, schools, open houses and photos. 3 endpoints, 1 credit each, structured JSON.

Access ZINC (230M+ purchasable compounds). Search by ZINC ID/SMILES, similarity searches, 3D-ready structures for docking, analog discovery, for virtual screening and drug discovery.

Develop zero-knowledge proofs: private voting and identity, zk-rollups, verifiable computation, and compliance without exposing data. Use for privacy-preserving apps.

Expert in Zod — TypeScript-first schema validation. Covers parsing, custom errors, refinements, type inference, and integration with React Hook Form, Next.js, and tRPC.

Archive Zoom cloud recordings, read stored meeting transcripts and summaries, or manage a Zoom meeting through zm. Use for Zoom CLI workflows, not joining calls or operating the desktop video client.

Create Zustand stores with TypeScript, subscribeWithSelector middleware, and proper state/action separation. Use when building React state management, creating global stores, or implementing reactive state patterns with Zustand.

Create Zustand stores following established patterns with proper TypeScript types and middleware.