Briefs leave decisions unstated
A ticket can describe the outcome without defining hierarchy, spacing, interaction states, or responsive behavior.
Give your coding agent the frontend context your brief leaves out.
Inspect real foundations, components, states, responsive rules, flows, and source before the agent writes your UI. Keep control of the implementation and start closer to something coherent.
The agent can write JSX. It still needs the system.
A brief explains what to build. A screenshot shows one moment. A component library supplies primitives. None of them explains how the full interface system should behave.
Without those relationships, the agent invents them. The result may compile, but the missing decisions return later as inconsistent states, brittle layouts, and review churn.
Screenshots hide behavior
One captured state cannot explain what changes across breakpoints, loading states, errors, navigation, and complete flows.
The missing context becomes rework
Developers end up correcting structure and edge cases after the agent has already spread weak assumptions across the UI.
discovery
Kit
foundations/
components/
blocks/
DESIGN.md
Button / primary
state: default · hover · loading
layout: intrinsic width · 42px height
responsive: label preserved
Source and behavior stay connected.
Inspect the system. Then let the agent build.
Browse the same interface source yourself, then give the coding agent a portable reference it can follow throughout implementation and review.
export function BillingPanel() {
return <AccountLayout>
<UsageSummary />
<PaymentMethods />
</AccountLayout>
}
Review
States coveredResponsive rules keptSource adapted
delivery
Everything your agent needs to stop guessing.
InterfaceKit keeps the decisions behind the screen connected, so both you and the coding agent can inspect the same source before implementation drifts.
Inspectable source
Read and copy authored code instead of relying on an opaque generation step.
Components with states
Keep variants, loading, empty, error, and active behavior attached to each building block.
Responsive rules
See how hierarchy and layout relationships change across desktop, tablet, and mobile.
Complete product blocks
Understand how components compose into larger surfaces and real application flows.
Tokens and foundations
Give color, typography, spacing, borders, and layout decisions a shared source.
Interaction behavior
Reference navigation, actions, overlays, and transitions together with the rendered UI.
Agent-readable resources
Let the coding agent retrieve precise Markdown for the resource it is implementing.
Fits the workflow you have
Use the reference inside the editor and repository without introducing another integration.
Easy to revisit in review
Return to the exact system decision when implementation details need another pass.
Built to be adapted
Keep the useful system while changing what should be specific to your product and codebase.
Don’t ship another forgettable app.
Give your agent structured interface references from products that set the standard, then turn them into something unmistakably yours.