Alloy

Alloy is an AI prototyping tool for teams that want to create interactive demos from their existing product. It supports browser capture or codebase connection, cloud sharing, and handoff to GitHub, MCP, or Figma-related workflows.

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Overview

Alloy is an AI prototyping tool that turns an existing product into an editable prototype. It is designed for teams that want to explore changes using their real codebase, components, and pages instead of rebuilding interfaces from scratch.

The product supports two main starting points: capture a page instantly with the browser extension, or connect a codebase for deeper prototyping and production-code output. Sessions run in the cloud, can be shared with teammates or customers, and can be pushed onward to GitHub or exported through MCP and Figma-related workflows.

Features

Start from your existing product

Capture a page from the browser extension or connect your codebase, then work from the product you already have instead of rebuilding screens from scratch.

Interactive prototype sessions

Prompt changes in a cloud session while Alloy runs the app in a sandbox, showing a live preview as you iterate.

Cloud sharing and collaboration

Share sessions by link, invite teammates, or send prototypes to customers so feedback can happen in the browser without local setup.

Connected workflows

Use integration sources such as Linear, Jira, Slack, Intercom, Notion, and Dovetail to turn requests, research, and work items into prototypes.

Export and handoff paths

Push changes to GitHub as a pull request, export sessions, or access them through MCP for downstream use.

Design and admin controls

Apply design system controls and import from Figma when needed, with support tiers that include admin roles and early access to new features.

Use Cases

Explore product changes in context
Product teams can turn an existing page or workflow into a prototype to test changes without rebuilding the whole app from scratch.
Convert incoming work into demos
Designers and PMs can use Slack, Linear, Jira, Notion, or Dovetail inputs to turn requests, issues, or research notes into interactive prototypes.
Review ideas with stakeholders
Teams can share a cloud session with colleagues or customers to collect comments before pushing a change onward to GitHub.
Adopt in controlled environments
Enterprise teams can use higher-tier security and admin features, including SAML/SCIM and API access, when prototyping needs to fit existing controls.
Work from established design systems
Teams that already maintain a component library or design system can prototype against their existing product structure to keep output aligned with current UI patterns.

Pros and Cons

Pros

Works from an existing product, codebase, or captured page instead of starting from a blank canvas.
Supports cloud sessions that can be shared with teammates or customers.
Includes a broad set of integrations across product, collaboration, support, sales, and engineering tools.
Offers a free plan plus paid and enterprise options for different team sizes.
Provides enterprise-oriented controls such as SAML/SCIM, API access, and account management on higher tiers.

Cons

Figma import is not currently available, according to the FAQ.
Connecting a codebase requires admin permissions and about 15 minutes of setup time.
The security page says SOC 2 Type II is in progress rather than already completed.

FAQ

How do I start using Alloy with my existing product?

Alloy lets you either connect your codebase or use the browser extension. The extension is described as requiring no setup and enabling instant capture, while codebase connection requires admin permissions and around 15 minutes of setup time.

What kind of workflow does Alloy support?

Alloy is positioned around prototyping from an existing product rather than starting from screenshots or a blank canvas. It can run your app in a sandbox, use your component library and design system, and export sessions to GitHub, MCP, or Figma.

What pricing options does Alloy offer?

Yes. The pricing page lists a Free plan, a Pro plan at $20 per user per month, and an Enterprise plan with custom pricing. Enterprise includes items such as API access, account management, SAML + SCIM, and custom terms.

Can teams share and collaborate on prototypes in Alloy?

Alloy supports external sharing, team collaboration, and cloud sessions that can be shared with teammates or customers. The site also lists integrations for tools such as Linear, Jira, Slack, Intercom, and others.

Does Alloy support Figma import?

For Figma import, the site says not right now. It recommends capturing the actual web app for best results, and notes that you can export an Alloy prototype to Figma later.