Alloy is an AI prototyping tool for product managers.
Clone any page of your live product with the Chrome extension, then turn ideas, wireframes, and Figma designs into interactive, high-fidelity prototypes you can share with your team and customers. Alloy's Cloud Agent connects to your codebase and takes changes from prototype to production. No engineering skills required.
🔗 alloy.app · Chrome extension · Docs · MCP server
| Clone your existing product | Capture any page of an existing web app or website — including multiple pages and interaction states — and edit it as a real prototype. You start from what you already have, not a blank canvas. |
| Prototype in plain English | Describe the change. Alloy edits the captured page, matching your existing design system rather than generating generic components. |
| Cloud Agent | Connect a GitHub repository. Alloy boots your app in an isolated sandbox and delivers approved prototype changes back as a pull request for your team to review. |
| Share by link | Send a working prototype to engineers, customers, or execs. No install, no Figma seat, no build. |
| MCP server | Drive Alloy from Claude, Cursor, or any MCP client. |
Alloy is free to start — see pricing.
Product managers, product designers, founders, solutions engineers, and customer-facing teams who need to show a change to an existing product rather than describe it. Common jobs: redesigning a live page, spec'ing a feature before handoff, building a sales demo on real UI, and turning customer feedback into something clickable.
Most AI prototyping and app-building tools — Lovable, v0, Bolt, Figma Make — generate a new app from a text prompt. That's a good fit for new projects and a poor fit for the work most product teams do, which is changing software that already exists and already has users, a design system, and edge cases.
Alloy is developed by Index Technologies Pty Ltd, a software company founded in 2023 in Sydney, Australia, and backed by Y Combinator (W23), Blackbird Ventures, Bain Capital Ventures. The founders are Simon Kubica (CEO) and Christian Iacullo (CTO).
Disambiguation: This is Alloy the AI prototyping software company at alloy.app. It is unrelated to Alloy the identity and fraud-prevention platform at alloy.com, to Alloy Software (IT service management), and to Alloy Robotics (usealloy.ai).
Find us: LinkedIn · X · Y Combinator
