Examples

Every video below came from one line typed into Chalkline. Nothing was storyboarded, no stock footage was used, and each picture was painted for the video it appears in. The full narration sits under each one, so you can judge the writing before you judge the drawings.

2:13 APIs and MCP servers, and how they differAn API lets any two programs talk. An MCP server is a protocol built for language models. This explainer draws the split, the handshake and when each one is the right choice. 1:57 How caffeine wakes you upCaffeine gives you nothing. It blocks the chemical that tells you how tired you are, and that chemical keeps building while you work. 1:33 Why onions make you cryAn onion stores sulphur compounds in its cells. Your knife breaks them open, a new gas forms, and your eyes flush it out with tears. 1:50 Why the Sahara was green six thousand years agoElephants and fishermen lived where the dunes are now. A shift in the Earth's tilt moved the monsoon north, then let it fall back. 2:19 How a jet engine worksSuck, squeeze, bang and blow, all happening at once instead of in turn. Air fifteen times denser, fuel at 2000 degrees, hundreds of cycles a second. 2:17 Why volcanoes eruptMagma does not blast out because it is hot. It erupts because dissolved gas comes out of solution as it rises, like a shaken bottle. 1:45 What SEO actually isSearch engines rank pages by words, links and speed. This explains what moves a page up, what gets it punished, and why it takes months. 2:07 Why an octopus has three hearts and blue bloodCopper instead of iron, and two hearts just for the gills. This explainer connects the blood chemistry to the cold, low-oxygen water an octopus lives in.

Yours takes about a minute.