Alloy

Open Alloy and start from what already exists. Pull in the live screens your team already ships, then link your component library and design tokens so everything you assemble matches production. From there, map the user journey you want to test—onboarding, checkout, billing, or an admin flow—and arrange the steps on a canvas. You’re not drawing from scratch; you’re composing with the same building blocks your product uses today, so behavior, layout, and copy feel familiar to stakeholders and customers.

To explore alternatives fast, drive changes two ways. Type natural requests to Alloy—insert a confirmation step, switch the layout to two columns, simulate a failed API call—and it updates the flow. Then fine-tune in the visual editor: tweak props on a component, adjust spacing, swap variants, or connect form fields to validation rules. Test different breakpoints, empty and error states, and micro-interactions without code. Because the prototype behaves like the product, you can compare paths, measure friction, and lock a direction before a single ticket hits engineering.

Use Alloy to align the room quickly. Share a link and collect comments in context. Invite a PM, designer, or legal reviewer to propose edits on the same canvas. Run a short customer session where participants click through a realistic scenario—change plan, update profile, recover password—and watch where they hesitate. When you’re ready, export clear, component-level specs so engineers know which variant, state, and responsive rules to implement, cutting back-and-forth and preventing rework. more