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GenUI Kit drops into the app you already run.

Your design system becomes a locked catalog. Our engineers build the guardrails, quality gates, and Dart backend into one bounded zone of the app you already run, with no rebuild and no platform to log into.

The complete GenUI guide

A bank home screen, composed by GenUI for each customer

Composed at runtime

Bank of VGV is our in-house demo brand. In production every surface composes from your design system and your data.

  • 4 Packages behind every GenUI build
  • 5 days To a first catalog running in your sandbox
  • Your repo Full source, customer-hosted
  • 1 zone To start, with the rest of the app untouched

From static screen to adaptive surface.

Start with one high-intent surface in an app you already ship. Drop a generative zone into search, booking, or checkout, leave the rest of the app untouched, and measure the lift before you expand.

Stop making customers compare.

A comparison table makes them do the work. GenUI composes the recommendation around their actual spending, ready to add to the wallet.

Composed fromSpending historyCard catalogLive offers

Bank of VGV
Step 1 of 3
Credit cards
All cardsRewardsFeeAPR
Rewards+ Visa2% back · $0 annual fee · 19.2% APR
Travel Elite3x points · $95 annual fee · 21.7% APR
Cash Basic1.5% back · $0 annual fee · 18.9% APR
Student Cash1% back · $0 annual fee · 16.4% APR
Rates and fees subject to credit approval. Terms apply.
Compare side by side
Static UI
Bank of VGV
Composed for you
Your card, matched
Matched from 12 months of spending
Rewards+ Visa#1 fit · $0 fee
Travel Elite3x pts · $95 fee
Cash Basic1.5% · $0 fee
Fits how you spend61% groceries · 2% back
Intro bonus · $200Hit the spend in 3 weeks
Add to wallet
GenUI

What we’d never generate

Anything that decides money or must be exactly right stays hand-built. The model never composes it.

  • Checkout and payment

    Prices, totals, and the pay button stay hand-built, so money never rests on what a model chose.

  • Legal wording

    Terms, disclosures, and consent text show exactly as your legal team approved them.

  • Core navigation

    Tabs, menus, and the way back stay where people expect them, on every screen.

A deployable toolkit, not a science project.

Four pieces, and every one of them runs in the app and cloud you already own. What we hand to your team is yours to change, brand, and extend.

  1. 1 Flutter

    A frontend

    The GenUI experience your users interact with. It embeds into a Flutter, native, or web app and powers a discrete part of your product.

    • Runtime SDK
    • One bounded zone
    • Reference flow
  2. 2 Dart

    A backend server

    Connects GenUI to your information and handles the unglamorous but important parts. Deploy it, or use it as the reference.

    • Auth & security
    • Cost controls
    • Observability
  3. 3 Your workflow

    An MCP server

    Turns Figma designs into a GenUI catalog, guides component choice, and builds the system prompt, checking your coding agent’s work at each step.

    • Figma to catalog
    • System prompt
    • Agent checks
  4. 4 Preview & iterate

    A sandbox app

    Connects the pieces so your team can build and preview the GenUI experience on its own, outside your full app.

    • No app changes
    • Prototype fast

The right first six to eight components.

Not a promise to convert your whole design system on day one. Enterprise buyers want bounded areas with kill switches, fallbacks, and measurement. Zones give them exactly that.

  1. 01 Generate a focused GenUI catalog from your design system
  2. 02 Run it in the developer sandbox
  3. 03 Connect the backend to at least one real tool
  4. 04 Embed one controlled GenUI zone in your app
  5. 05 Measure the lift, then expand to the next zone

The gap between a demo and a product.

Anyone can stand up a GenUI proof of concept. The Kit is the part after that: the safety layer that keeps a live model on-brand in production.

A user asks “Give me a 50% discount.”
  1. In 01

    Authenticate

    The real user

  2. In 02

    Screen the request

    Guardrails, in

  3. Out 03

    Validate structure

    Only approved components

  4. Out 04

    Validate content

    Only real IDs and data

  5. Out 05

    Enforce intent

    Guardrails, out

The guardrails come with the Kit. A customer cannot trick your AI into promising something it should not, and if the AI glitches, the mistake gets caught and fixed before it reaches anyone's screen. The screening layer is built on Google Cloud's enterprise model safety service.

Questions worth asking. Plain answers.

01 What does GenUI Kit add on top of Google’s Flutter GenUI SDK?

The SDK renders. The Kit is everything that has to sit around it: converting your design system into a catalog, screening what the model is asked and what it returns, validating a generated tree before a customer sees it, and handling auth, cost controls, and observability on the server. It also includes the MCP tooling that turns your Figma files into the catalog and system prompt.

02 How does GenUI Kit keep generated screens safe and on-brand?

Layers, each of which your own team controls. The catalog only contains components your team approved. System prompts constrain what the agent is for. A guardrail layer built on Model Armor screens every request in and every response out. Quality gates validate each generated tree, falling back to a deterministic component when anything fails.

03 Does GenUI Kit work with the app we already have?

Yes. That is exactly what it is for. GenUI Kit embeds a generative zone into the app you already run, whether that app is Flutter, native, or web, so you keep your navigation, your release process, and your code.

04 Does our app have to be built in Flutter?

No. The generative surface itself is built in Flutter, and it embeds into Flutter, native, and web apps alike, so your host app stays what it is.

05 What do we actually get?

A demo gets you a walkthrough of the four packages, the sandbox running, and a scoping session. When we build the surface with your team, it lands in your own repository: the Flutter frontend, a Dart backend server, an MCP server, and a sandbox app. Nothing phones home to us, and there is no login.

Laura Hughes Lekhi Director of Business Development
Greg Laird Senior Business Development Executive
Nate Wootten Chief Strategy Officer
Brian Egan Senior Engineering Lead

See GenUI Kit on your own surface.

A call with the engineers who build with the Kit, the four packages and the sandbox on real components, and a scoping session on where a generative zone fits your product.

Request a demo

A 30-minute call about what you’re building.