UIPrompt – plan your UI in a canvas, export an XML context that your AI coding agent can actually use

AI coding agents are only as good as the context you give them. Vague prompts = generic UI.

I got tired of the 5-round correction loop after asking Claude Code or Cursor to "build a dashboard" and getting something completely off. Wrong components, wrong stack, no design constraints.

So I built UIPrompt — a planning canvas + AI context generator.

Here's the workflow:

1. Open UIPrompt, lay out your UI frames and components on a canvas
2. Write per-component instructions ("this button triggers the payment flow, use shadcn/ui Button variant=default")
3. Set your stack once — framework, styling, component library, icons, state management
4. Export → structured XML system prompt

Drop that XML into your agent (or use the MCP server if you're on Claude Code) and it has everything: what to build, how to build it, what constraints to follow, how things connect.

The difference is significant. Instead of "build me a hero section," your agent gets a precise spec with visual profile, mandatory constraints, and per-component context already filled in.

Launched on Product Hunt today: https://uiprompt.app

Works with Claude Code, Cursor, Copilot, Codex, Gemini CLI, Windsurf and more.