Tool directory · Vibe Coding · Featured in Issue #1

fx0

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An open-source design agent: describe a page and it writes the whole thing as a single HTML file, keeping a version for every turn. It starts from ten design styles or your own design.md.

Our Take

fx0 is for landing pages and mockups, and a readable example if you want to build your own agent app on Vercel's libfx. You describe a page and it writes the whole thing as one HTML file, keeping a version for every turn. Model costs bill through your Vercel AI Gateway account, and each turn is capped at 64 model steps so a looping agent can't run up a bill. Source