Props the model invented
Gone. The agent sees the contract before it touches JSX.
Build UI with AI that follows your design system.
Userface makes agents compose screens from your real components, validates the result, shows the UI, and prepares a patch you can actually approve.
AI can move fast. Your UI still has to survive production.
Generic tools are impressive right up until they invent props, ignore states, and hand your team another cleanup sprint.
Screens you cannot see
Gone. Preview first, patch second.
Design-system drift
Caught before one-off UI becomes another cleanup sprint.
The loop that makes AI usable for UI.
Prompt. Contracts. Validation. Preview. Patch. No invisible output. No heroics after the fact.
Prompt->Contracts->Validation->Preview->Patch
Start where SaaS UI gets painful.
Billing forces tables, plan states, usage, payment methods, upgrade pressure, and failure paths. If AI can handle that, it can earn trust.
If you cannot see it, it does not exist.
The workbench puts chat, validation, preview, and patch approval in one place, so generated UI stops being a leap of faith.
The screen has to earn the patch.
Userface turns UI generation into a proof loop: context first, preview always, validation before code.
Context before generation
Attach contracts, files, patterns, and states before the first screen is built.
Preview before review
Inspect the generated interface while changes are still cheap.
Validation before trust
Catch invalid props, missing states, broken composition, and drift before they land.
Approval before code
Apply the patch only after the screen and diff tell the same story.
For teams that are done babysitting AI output.
The value is not more code. The value is getting a real screen that already knows the rules of your product.
Product engineers
Turn a prompt into a screen you can inspect, not a pile of JSX to babysit.
Frontend teams
Generate billing, settings, CRUD, and admin flows without losing control of the code path.
Design-system maintainers
Make every generated screen prove it used the system correctly before it lands.
Before you try it.
What is Userface?
A desktop AI workbench for turning prompts into validated UI previews and reviewable patches from your design-system contracts.
What does the app actually do?
It gives the agent your UI context, shows what it built, runs validation, and keeps the final patch under your approval.
What do I need to connect first?
Start with the screens and components your team already ships. Userface uses contracts and project context to keep generated UI inside that surface.
Can I use it with my design system?
Yes. That is the point: your design system becomes the source of truth the agent has to build against.