Creator Economy · standard

Stop guessing on thumbnails.

A Claude / ChatGPT skill that designs three high-CTR Lego thumbnail concepts every time, with palettes, copy hooks, and a copy-paste image prompt.

$3.99

Works in Claude + ChatGPT

01Generates 3 visually distinct concepts per request — never duplicate variants

02Hex color palettes pulled from canonical LEGO brand colors + 5 battle-tested recipes

03Composition notes tuned to YouTube's mobile-first 160px crop and the progress-bar overlay

04Copy-paste DALL·E and Midjourney prompts ready for each concept

05Refuses misleading clickbait and offers honest curiosity-hook alternatives

What it does

If you run a Lego channel under 50k subs, thumbnails are the single biggest lever on your growth and the thing you spend the most time fighting with. This skill ends the fight: tell it what you built and who it's for, and it returns three distinct concepts with composition notes, hex palettes, text hooks, facial expressions, and a copy-paste DALL·E or Midjourney prompt for each. It refuses clickbait that misleads your viewers and offers honest alternatives. Installs in Claude Code with one command, or sets up as a ChatGPT Custom GPT in 2 minutes — both formats included.

Frequently asked

Does this actually generate the thumbnail image, or just the design?

It generates the *design* — concept, composition, palette, text, and the AI image prompt you paste into DALL·E or Midjourney. The skill itself doesn't generate images (yet); that step is free in ChatGPT Plus and a few cents in Midjourney.

Will it work for non-Lego YouTube content?

No — and that's on purpose. It's tuned to the visual language Lego viewers respond to. For other niches, browse the Skill Tree catalog for the version made for your channel.

Is this just a prompt? Can't I write my own?

It's the prompt plus two reference files (canonical LEGO color hex codes and a YouTube-mobile-tuned composition checklist) plus a tested instruction loop that hits 3 distinct concepts every time. You can write your own — and most creators don't.

Does it work in ChatGPT or only Claude?

Both. Every Skill Tree skill ships as a Claude Code skill (install via `npx skilltree install`) and as a ChatGPT Custom GPT package (2-minute setup guide included).

Install

After purchase you'll get a license key. Then:

$ npx skilltree-network login # paste your license key

$ npx skilltree-network install lego-youtube-thumbnail-designer

ChatGPT version included — your account page also has a download zip.