Build the tool you need Rendeer turns a written description into a working design tool. Not a picture of one: a real application with controls that drive a canvas, checked against its own output before it is handed over. It actually runs Every control is driven and measured before you see the tool. A slider that moves nothing is caught and repaired rather than shipped, which is the part a screenshot cannot tell you. Take the output anywhere Export a still as PNG, JPG, SVG or CSS, an animated loop as WebP, GIF or MP4, or lift the whole tool out as a standalone React component that runs in your own repository with no Rendeer runtime and no network call. Drive it from an agent Rendeer speaks MCP, so an AI agent can build a tool, describe its controls, set parameters and export the result without a browser. Browse published tools or read the terms.