📜 Ethan Mollick posted on LinkedIn about getting Claude to make explainer videos drawn entirely in code. No image generator, no stock footage, just code drawing every frame. I liked it enough to build it into a Claude Code skill, and the video on this post is what it makes. ⚓ What the skill does - I point /explainer at a post, a doc or a topic - Claude writes a 20 to 30 second script from it, facts only from the source - The voice gets made, then Claude uses Whisper to find the exact second each word is spoken - Every animation is tied to a word, not a clock time. When the narration says "voice", the Voice step pops in - Claude draws the frames on an HTML canvas and renders MP4s in 16:9, 1:1 and 9:16 - Cost per video: $0 ⚓ About the voice The voice is mine, cloned with Pocket TTS and running locally on my own machine. You don't need that. You can paste the script into ElevenLabs (or any TTS you like), or record it yourself, hand Claude the audio file, and have Claude match the animation to it. ⚓ Why this video jumps around My videos normally stick to one style start to finish. For Claude Code Pirates the default is a pirate ship at sea. This one hops through every world I've built so far, just as a demo, so you can see the range: - Pirates: cannon broadside on every point, a kraken for the warning - Platformer: a side-scroller that bonks a block on every point - Shooter: a starfighter blasting an alien per step - Girder: barrels, ladders and a boss robot - Pow: 60s TV superhero, KAPOW on every hit That's the part Mollick's post showed well: once the engine exists, a new look is just another drawing function. Ask Claude for "a new world" and describe it. ⚓ Build your own I'm not handing out my exact skill, since it's wired into my own setup. Instead I put a new lesson in the Classroom with the kickoff prompt and a skill outline you can copy, paste and make your own: - 🏴☠️ Build Your Own Explainer Video Skill (in 🗺️ Quick Wins & Recipes)