What the reader should know before acting, with one fix.
Every shadcn style · one file
v2.1 · Updated Oct 21pnpm dlx shadcn@latest add https://notchset.dev/r/banner.jsonpnpm dlx shadcn@latest add https://notchset.dev/r/banner.jsonFree, no account or key. One command for every shadcn style. With the @notchset registry added, @notchset/<name> works too.
Works with React 18.3 or 19 on Tailwind CSS v4, in any shadcn project. What's tested
The CLI adds the styles to the CSS file named in components.json (tailwind.css). Check that it points at your global stylesheet, that the project uses Tailwind CSS v4, and that the file is imported in your root layout. Installed by hand: paste styles.css into that file.
Import it and pass your content. The props that matter most are listed next.
"use client";
import { CalendarX, SignalLow, Sparkles, Timer } from "lucide-react";
import { Banner } from "@/components/ui/notchset/banner";
export default function BannerDemo() {
return (
<div className="flex w-full max-w-[560px] flex-col gap-2">
<Banner icon={<Timer />} title="Closes in 6 days">Send the order form to Priya</Banner>
<Banner tone="warn" icon={<CalendarX />} title="Close date passed" action={{ label: "Update", onClick: () => {} }}>
3 days ago
</Banner>
<Banner tone="warn" icon={<SignalLow />} title="Quiet for 18 days" action={{ label: "Log a touch", onClick: () => {} }}>
last: Demo with the security team
</Banner>
<Banner tone="ok" icon={<Sparkles />} title="Airtable is set up." action={{ label: "Email Ana", onClick: () => {} }}>
Start the conversation with Ana.
</Banner>
</div>
);
}This example also uses lucide-react. Add it to your project too.
components/ui/notchset/banner.tsx
tone"neutral"
keyof typeof tonesicon–
React.ReactNodetitle–
React.ReactNodeRequired.
action–
{ label: string; onClick: () => void }The one action that fixes what the banner says.
actions–
React.ReactNodeWhen it takes a decision rather than one fix (Deny · Approve): the system's own buttons, at the end.
layout"bar"
"bar" | "card"Give your coding assistant the Markdown guide instead of screenshots.
https://notchset.dev/api/mcp (setup)v2.1.0 · 2026-10-21
A bad tone, for what needs fixing.
v2.0.0 · 2026-10-13
Released with the Notchset system.
The same file, at work in a finished app. Open it live and find it on its pages.