YouTube Video Description Writer: Publish-Ready Descriptions in Minutes
The YouTube description box is where most upload sessions stall. Creators who scripted and edited for hours suddenly have nothing to write, paste in generic copy, or skip SEO entirely and just hit publish. The YouTube Video Description Writer for Claude and ChatGPT turns your title, topic, and CTA into two complete description options, a pinned comment draft, and platform-appropriate hashtags — ready to paste and publish. This guide covers what goes in each section of a strong description and why each element matters for search and viewer behavior.
Most YouTube upload sessions go the same way: an hour filming, two hours editing, and then a complete stall at the description box.
You've already done the hard work. The video exists. But the description requires you to switch into copywriting mode — keyword placement, viewer hook, links, hashtags, CTA — when all you want to do is click publish. The result is either a description you dashed off in two minutes that's doing nothing for search, or a description you spent 30 more minutes on that's still not as good as it should be.
The YouTube Video Description Writer is a free skill for Claude and ChatGPT that removes that stall. Give it your title, topic, and CTA goal — get back two complete description options you can paste immediately. One is keyword-dense, optimized for search. One is story-forward, optimized for viewer engagement. You pick the version that matches your goal for that video, copy it in, and publish.
Here's what goes into each part of a strong YouTube description and why.
The First Three Lines
The most important real estate in any YouTube description is the opening — the first two to three lines that appear before the "Show more" fold on desktop, and the first sentence or two visible on mobile.
YouTube search results show the first 157 characters of your description directly under the video title. Those characters are visible to searchers before they click — they function as a second hook after the title. If those characters say "In this video, I'm going to show you..." you've wasted them.
The skill writes the opening three lines with one rule: the primary keyword and the hook go first. Not the sponsor read. Not "hey guys, welcome back." Not a summary of the video structure.
Weak opening:
In today's video, I'm going to walk you through my entire morning routine. I get this question all the time so I decided to finally make a video about it. Let me know in the comments if this helped!
Strong opening:
Morning routine for productivity — the exact 6-step sequence I use to get 4 hours of deep work done before noon. No fluff, no journaling for an hour, no 5am wake-up required.
The strong version uses the keyword phrase ("morning routine for productivity") in the first sentence, communicates a specific benefit, and pre-empts the biggest objections to morning routines in one line. That's the copy doing three jobs simultaneously.
Two Description Variants
The skill generates two complete description options from the same video input. They cover the same content with different emphases:
Variant A — Search-first: Keywords appear in the first 200 characters, first sentence includes the primary keyword, all major sub-topics from the video are mentioned with their keyword phrases, and the structure prioritizes indexable information over narrative flow. This variant is best for evergreen tutorial content, how-to videos, and anything where YouTube or Google search is the primary traffic source.
Variant B — Story-first: Opens with a hook that reflects the narrative arc of the video, uses keywords later in the description where they fall naturally, writes more conversationally, and leads the CTA with personality rather than utility. This variant is best for personal brand content, storytelling-heavy uploads, and videos where subscriber loyalty is a stronger traffic driver than search.
Both variants include all the required structural elements — the hook, the body, the links, and the CTA. The difference is emphasis and register. Picking between them is a one-second decision: which traffic source matters more for this specific video?
SEO Keyword Placement
YouTube's ranking system weighs keywords more heavily when they appear in specific locations. The skill places keywords with this hierarchy in mind:
First 200 characters — Highest weight for search indexing. The primary keyword appears here, once, naturally integrated into the benefit statement.
Chapter titles — If chapters are present in the description, their titles carry search weight independently. Each chapter title becomes an opportunity to index a secondary keyword phrase. (For generating the actual timestamps, the YouTube Chapter Generator handles that step.)
Body copy — Secondary keywords appear once or twice in the body section, in the context of the content they describe. The skill avoids keyword stuffing — repeating a phrase three times in 200 words signals low-quality content to YouTube's classifier.
Links section — Related video and playlist links carry anchor text that can reinforce keyword relevance for the videos being linked to, not just the current video.
One rule the skill enforces: the primary keyword appears in the first sentence of the description and nowhere else in the opening section. Repetition in the first paragraph consistently underperforms natural single usage in search ranking.
The Pinned Comment Draft
The first comment a creator pins under a video has outsized importance. YouTube counts comments as engagement signals that influence distribution. A pinned comment that generates replies drives up the total comment count — which is a ranking and recommendation factor — faster than waiting for organic comments to accumulate.
Most creators who pin comments pin something passive: "Thanks for watching! Full transcript in the description." This drives zero replies.
The skill writes a pinned comment designed to generate genuine conversation. The formula: a specific question that extends the video's topic, directed at a decision the viewer is actively facing or a result they want to achieve.
Passive pinned comment:
Thanks for watching! Let me know if you have any questions below.
Comment-generating pinned comment:
Curious — what's the hardest part of your morning routine to actually stick to? For me it was the no-phone rule for the first hour. Took about 3 weeks before it felt automatic.
The second version works for three reasons: it's specific (no-phone rule, one hour), it's vulnerable (the creator shares their own struggle), and it's answerable in one sentence. Viewers with the same experience want to reply. Viewers who solved it differently want to reply. Viewers who haven't tried it are curious what others say.
The skill generates one pinned comment per video as part of the standard output.
Hashtag Output
YouTube hashtags behave differently from Instagram or TikTok hashtags. On YouTube, hashtags appear at the top of the description on mobile and desktop, before the "Show more" fold — giving them high visibility. They link to a YouTube topic page when clicked, which is a discovery surface.
The skill outputs three to five hashtags per video, with a deliberate constraint: no broad hashtags like #YouTube or #HowTo unless they're genuinely the most relevant terms available.
Why broad hashtags underperform: clicking #YouTube leads to a topic page with billions of videos. Your video is instantly invisible. Clicking #MorningRoutineForProductivity leads to a much smaller pool where a quality video can rank.
The output includes one broad category hashtag for indexing signal and two to four specific topic hashtags that match the exact subject of the video. These are recommended to be placed at the end of the description body, before the links section — so they appear in the visible area above the fold on mobile.
How to Use It
Open your Claude or ChatGPT project with the skill installed. Give it:
- Your video title (or working title)
- A one-paragraph summary of what the video covers and what the viewer learns
- Your CTA goal for this video (subscribe, visit a link, watch another video, join a list)
- Any links you want included in the description
You'll get Variant A and Variant B descriptions, a pinned comment draft, and a hashtag recommendation. Paste whichever description fits, copy the pinned comment, post it, and pin it before you close the tab.
Total time from pasting your input to description live: under two minutes.
Pricing and Where to Get It
The YouTube Video Description Writer is free with email registration. Works in Claude and ChatGPT — give it your title and topic, get two complete description options, a pinned comment draft, and hashtags ready to paste.
→ Get the YouTube Video Description Writer
Pair It With
- YouTube Chapter Generator — Generates properly formatted chapter timestamps to place inside the description. The two skills work as a pair: description writer handles the copy, chapter generator handles the timestamps. Together they produce a complete, publish-ready description block.
- YouTube SEO System — The description writer handles upload-time SEO. The YouTube SEO System covers the full optimization loop: keyword research before filming, title optimization, CTR diagnosis, retention analysis, and the monthly analytics review. If you want to go deeper into strategy, this is the full system.
- AI Script Writer for YouTube — Write the video script and description in the same session. The script writer handles the full video structure; the description writer takes the completed script as input and produces the upload copy.
Get More Skills Like This
The YouTube Video Description Writer is part of the YouTuber Starter Pack — a curated set of 26 AI skills for YouTubers covering titles, thumbnails, scripts, and analytics. If you want every part of your upload optimized — not just the video itself — the bundle saves you 86% vs buying each skill individually.
View the YouTuber Starter Pack →
The description box is the last step before your video reaches the world. It shouldn't be the step that costs you an hour or gets skipped because you ran out of momentum. Two complete options, a pinned comment, and a hashtag recommendation — ready in under two minutes — is what the YouTube Video Description Writer gives you every time you upload.
About the author
Content, CreatorSkills
The CreatorSkills team publishes practical guides on AI workflows for content creators.
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