Builder for Prototyping

Prototype product ideas
in your real app

Share a working preview your team can click through, comment on, and build from.

START PROTOTYPING BOOK A DEMO

Build with your design system

Builder works from your components, tokens, and patterns. The prototype looks and behaves like the product you ship.

Share a link anyone can open

Send stakeholders, customers, and teammates a preview URL. They walk through it and comment right on the prototype, so you learn what works while changes are easy.

Skip the rebuild

The prototype is already code, connected to your repo. After sign-off, engineering continues from the same work.

Cross-functional prototyping

Give every team a better way to shape the idea

Test the experience in the actual product

Share the prototype with users, then refine the interaction, copy, and states until it works the way they expect.

Design annotations and comments on a live prototype

Prototype with the systems your team already uses

Use your framework

Prototype inside the frontend your product already runs on, with the routes and patterns that decide what can ship.

Connect your existing data

Pull in the product data and content your app already uses, so the prototype runs on live data.

Keep your Git workflow

Move promising prototype work into the review process your engineering team already trusts.

Extend with MCP connectors

Connect tickets, docs, and internal tools so Builder can pull in the context around the idea.

Enterprise-ready

Security your platform team
can sign off on

Builder is built for engineering teams that need AI-assisted development and publishing workflows without giving up security, governance, or production control.

No training on your dataThird-party LLMs never train on your data. On Enterprise plans, Builder doesn't either.

Private connectivityRun behind your firewall. Builder connects to internal Git, registries, and APIs over a private link.

Access controls and governanceSSO, roles, and permissions control who can create, edit, and share prototypes.

SOC 2 Type IICompliant and audited, with enterprise rollout support when you need it.

Customer stories

Designs that shipped as designed

“Builder hits this nice middle ground… it’s structured enough for developers to stay in control, but flexible enough to let other teams move fast without creating chaos.”

Tom WolfStaff Engineer at LegalZoom

“A page that took three engineers a month to build can now be created in a couple of days.”

Gregory QuickStaff Engineer at Storyblocks

“Builder makes everyone’s lives easier, it makes it easier for us to maintain, and it makes it easier for the brand teams to maintain.”

Tyler HozieDirector of Technology at Anheuser-Busch

“Thanks to Builder, we diverted 20% of our development budget from content management maintenance to strategic growth initiatives like optimizing conversions and increasing member loyalty.”

Tim CollinsCTO at TechStyle Fashion Group

“With Builder, we’re able to see the same quality results that were only previously possible through reliance on our engineering team, who now have capacity to tackle higher-value projects.”

Dave KingCTO at Everlane

“Our developer team is ecstatic about working with Builder. They’re far and away the best vendor that we work with in terms of customer service, development processes, and documentation.”

Colin TracyDirector of Engineering at Black Rifle Coffee Company

FAQs

Get answers to common questions

Both. Teams explore early ideas in Builder, and approved work stays connected to code instead of starting over. Plenty of explorations stay throwaway. The ones that earn a yes keep going.

A Figma prototype simulates the experience. Builder builds it in code, with your indexed components and design tokens, so what stakeholders click is what your team can ship. Figma stays where design exploration happens. Builder is where the direction becomes software.

Most AI prototype tools start from a blank canvas, and their output has to be rebuilt by your engineers. Builder starts from your repo and design system, so an approved prototype moves to a branch instead of a rewrite.

Anyone. PMs and designers work from prompts and the visual editor in the browser. Engineers can open the same branch in their own tools. Roles and permissions decide who can do what.

Yes. Prototype work reaches production the same way any change does: a branch, a pull request, and your team’s review.

Yes. Start from a prompt, brief, or Figma file. Connecting the repo and design system makes prototypes more realistic and gives approved work somewhere to go, but it isn’t required on day one.

Prototype the idea. Keep the path to production.

Start from a prompt, ticket, or Figma file, and give your team something to click.