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Youtube Marketing

skill-sergebulaev-youtube-skills-youtube-skills · by sergebulaev

Plan, write, and publish for YouTube and YouTube Shorts. Use when the user wants high-CTR video titles, an SEO description with chapters and links, a first-30-seconds retention script (or a 3-second Shorts hook), a designer-ready thumbnail brief, a community-tab post or poll, or a weekly upload plan. The user supplies the video; the skills produce the title, description, hook, and thumbnail brief…

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Install

$ agentstack add skill-sergebulaev-youtube-skills-youtube-skills

✓ scanned · ✓ verified — works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • Prompt-injection patterns
  • Secret / credential exfiltration
  • Dangerous shell & filesystem operations
  • Untrusted network calls
  • Known-malicious package signatures

What it can access

  • Network access No
  • Filesystem access No
  • Shell / process execution No
  • Environment & secrets Used
  • Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

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About

YouTube Marketing Skills

A bundle of 6 focused skills for YouTube content ops in 2026, covering both long-form and YouTube Shorts. Each skill is single-purpose, follows the draft then approval then publish pattern, and uses the Publora API for uploading and scheduling the video you supply.

When to use this bundle

  • Writing high-CTR titles (curiosity, number, how-I, comparison) with A/B variants -> use yt-title-optimizer
  • Writing the description (first-150-char hook, chapters, keywords, links) -> use yt-description-writer
  • Scripting the first 30 seconds for retention (or the first 3 seconds of a Short) -> use yt-hook-scripter
  • Briefing a thumbnail (text overlay, face/emotion, contrast) plus the upload flow -> use yt-thumbnail-brief
  • Writing a community-tab post or poll -> use yt-community-post-writer
  • Planning a week of uploads (long-form vs Shorts mix, title/thumbnail pairing) -> use yt-content-planner

Core pattern

Every action-taking skill follows three steps:

  1. Parse the input. If the user gives a YouTube URL, the skill uses

lib/url_parser.py to extract the video id, Short id, channel, or handle.

  1. Draft the content. The skill applies 2026 research (title and hook

formulas, CTR x retention heuristics, thumbnail principles, voice rules) and shows the draft to the user.

  1. Wait for approval. The user replies "publish", "yes", or suggests edits.

Only after explicit approval does the skill upload and schedule via Publora.

Why YouTube is video-first (read this once)

YouTube is a video-only platform: every published post requires a single video file, which the user supplies. The skills write the title, description, hook script, and thumbnail brief; you bring the .mp4. On approval the upload follows the documented Publora flow:

  1. create-post with no scheduledTime -> creates a draft, returns a postGroupId
  2. get-upload-url -> a pre-signed S3 URL
  3. PUT your video to S3
  4. update-post/:postGroupId -> set the scheduledTime (and any youtube settings)

A custom thumbnail is set after the draft exists, via update-post (the thumbnail upload needs the postGroupId), never on create-post. YouTube community-tab posts have no Publora endpoint, so yt-community-post-writer always returns a copy-paste block.

Prerequisites

Three tiers - pick one.

Tier 0 - Draft only (default, no setup)

The skills work out of the box. No API keys, no signup. Every approved draft is returned as a copy-paste block (title + description, hook script, thumbnail brief, or community post) for you to use in YouTube Studio. Great for trying the skills before committing to any backend.

Tier 1 - Publora auto-upload (recommended, ~2 min)

On approval, the writer skills upload and schedule the video you supply via the Publora API.

  1. Sign up free: https://app.publora.com/signup
  2. Connect your YouTube channel in Publora (Channels then Add Channel, Google OAuth)
  3. Copy your API key from Publora's API panel
  4. Drop into .env:

`` PUBLORA_API_KEY=sk_... YOUTUBE_PLATFORM_ID=youtube-UC... ``

  1. Run pip install -r requirements.txt

Why Publora: uploading to YouTube on the native Data API means a Google OAuth flow, the resumable-upload protocol, and quota tracking. Publora does the draft, the S3 upload, the schedule, and the metadata in a handful of REST calls. We built on top of it so we did not have to reimplement the upload chain.

Tier 2 - Build your own uploader (advanced)

Prefer not to SaaS it? Ask Claude Code or Codex to build a custom uploader on the YouTube Data API. Set YOUTUBE_SKILLS_CUSTOM_POSTER= and the skills invoke it on approval. Publora is the 2-minute path.

Note on community posts

YouTube community-tab posts and polls have no Publora endpoint, and there is no public API for them. So yt-community-post-writer always returns its draft as a copy-paste block for you to post in the Community tab yourself. Videos and Shorts upload and schedule through Publora normally.

Voice rules (baked into every skill)

  1. No em dashes (), en dashes, or double dashes. Biggest AI tell.
  2. Use .. as a soft pause in a script line when rhythm calls for it.
  3. Capitalize all personal, company, and product names.
  4. Specific numbers beat adjectives. "in 28 days" beats "fast".
  5. Title is a promise, not a summary. Curiosity plus a concrete payoff.
  6. Title and thumbnail are a pair. They never repeat the same words.
  7. The first 30 seconds (or 3 on a Short) is the real algorithm. No intro.
  8. Title caps at 100 chars (sweet spot 40 to 60). Description caps at 5,000, first 150 visible.
  9. Avoid AI vocabulary: leverage, fundamentally, streamline, harness, delve, unlock, foster.
  10. Do not keyword-stuff. Natural language with the real search phrase once.

(Canonical reference: references/voice-rules.md. See also references/hook-formulas.md, references/algorithm-heuristics.md, and references/thumbnail-principles.md.)

How YouTube URLs map

| URL shape | Parsed to | |---|---| | https://www.youtube.com/watch?v=VIDEO_ID | videoid, type video | | https://youtu.be/VIDEO_ID | videoid, type video | | https://www.youtube.com/shorts/VIDEO_ID | videoid, is_short: true, type short | | https://www.youtube.com/@handle | handle, type channel | | https://www.youtube.com/channel/UC... | channelid, type channel |

lib/url_parser.parse_youtube_url(url) returns {video_id, handle, channel_id, is_short, url_type, canonical_url}.

Known gotchas

  • A video is required. A text-only YouTube post is accepted by create-post

but fails at publish with VIDEO_REQUIRED. Always use the draft -> upload -> schedule flow. The exception is a community post, which is not a video upload (and has no endpoint, so it is copy-paste).

  • Title defaults to empty. If you do not set platformSettings.youtube.title,

YouTube derives one from the first 70 chars of the content. Always set it.

  • Content becomes the description. The content you pass is the video

description; the title is separate in platformSettings.

  • Thumbnail needs a postGroupId. It cannot be set on create-post. Create

the draft, upload the thumbnail (verified channel, JPEG/PNG <= 2 MB), then update-post. The apply is best-effort: a rejected thumbnail does not block the video.

  • Publora caps uploads at 512 MB even though YouTube natively allows far

larger. Compress or use the dashboard for bigger files.

  • CTR is only half the product. A title that over-promises and loses the

first 30 seconds is punished harder than a modest title. Pair every title with a hook that keeps it.

Resources

  • Publora API docs - endpoint reference for the publishing layer
  • lib/publora_client.py - Python client (create-post, get-upload-url, update-post, connections)
  • lib/url_parser.py - YouTube video / Short / channel URL parser

Acknowledgments

Publishing powered by the Publora REST API.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.