tesla roadster in traffic

designers now start in code and refine in design tools. the flow flipped. agents write the code in minutes so there's nothing to hand off anymore, you design on the real thing. claude design imports your codebase, cursor shipped design mode, everyone's moving there. we've been building this at @polymetai since apr 2025. this is the way

our new intern decided her cursor was boring, so she built herself a new mouse. literally 🐭 every click is a paw slap, hard enough to shake the canvas

designing a new scrollbar for long agent chats. one dot per prompt, hover to peek, click to jump designed in polymet itself, old scroll on the left, new one on the right

here is what we changed to ship faster. we cut our agent rules and skills at @polymetai from 4,000 lines to 820, and the agents got better, the ones i drive and the automated runs. every mistake used to become another rule, one planning doc hit 1,179 lines and the agents just skimmed it. now every rule is one line with its reason, anything irreversible is blocked by code, and repeated work runs as a skill. not done cutting yet...

one ai design is the model's taste. ten designs, and the one you pick is yours. asking for one is the trap, you end up nudging the model's default all afternoon. ask for ten, put them next to each other, your eye finds the good one in seconds. @garrytan calls it the design shotgun, ai draws 3 directions and he cuts the overcomplicated one. generating is cheap now, your time isn't. we've had variations in @polymetai since day one, now the canvas lays them out side by side. generate wide, cut hard

design is how it works. what that means for design tools: you need working prototypes, not snapshots. you can't judge a flow you can't use. that's where taste comes in. ai products are the clearest case: the experience you design is the ai itself. it only makes sense when the chat actually works. that's why we built backend into @polymetai. design should live in code.