Scroll Thread
A process, a timeline or a story in steps, with a single curving thread that draws itself as the reader scrolls and lights each step when it reaches it. It follows the page, or scrolls inside its own panel with `contained`.
Ready for AI tools one file typed props installs by name prompt included
The decision inside it
The thread is measured through the steps
The path is routed through where each step's heading actually lands, so long and short steps keep their node at any width and after any re-wrap. A fixed SVG path drifts off its steps at the first breakpoint. Reduced motion draws it complete.
Installation
How you get it
Paste this into Claude Code, Cursor, Codex or any coding agent. It installs the file and uses it as it is, instead of writing a new one.
Use Layro's Scroll Thread for this.
Install it: npx shadcn@latest add @layro/scroll-thread
(the @layro registry is set up in components.json, with LAYRO_KEY in .env.local)
Import it from @/components/ui/scroll-thread.
Do not rewrite or restyle it. Pass my data through its props
and keep its built-in states.For the full brief with every prop and the mistakes assistants usually make, use Copy prompt above. Free components install through the @layro registry with your CLI token: see the Namespaced tab.
When to use it
Use Scroll Thread for a sequence read top to bottom: a changelog, a how-it-works, a story. The line draws down to the step you are reading.
Usage
import { ScrollThread } from "@/components/ui/scroll-thread";
const RELEASES = [
{ eyebrow: "Oct 14 · v2.4", title: "Agent approvals on mobile", body: "Approve or reject a run from your phone." },
{ eyebrow: "Sep 30 · v2.3", title: "Billing pages, twice as fast", body: "Invoices load before the first paint." },
];
export function Changelog() {
return <ScrollThread items={RELEASES} />;
}API
“Copy prompt” above puts a full brief on your clipboard — install command, dependencies, props, and the mistakes an assistant usually makes with this component.
Props
Read from the component’s own TypeScript interface when the site is built, so this table cannot drift from the file you install.
| Prop | Type | Notes |
|---|---|---|
itemsrequired | ScrollThreadItem[] | — |
contained | boolean | Scroll inside its own box rather than with the page. |
height | number | Height of the box when `contained`, in px. Default 440. |
threadClassName | string | Colour class for the drawn thread, read as `text-*`. Default blue. |
Dependencies
npm packages
clsxframer-motiontailwind-mergeLayro foundations, installed alongside it
layro-themeLifetime access
Every component, and everything we ship next.
- All 132 components, source included
- Every template, and everything released after you buy
- shadcn CLI or download — React 18/19, Tailwind v4
- One payment. No subscription.
More in Creative
All Creative components
Orbit Stack
FreeTestimonial cards on a slow orbit around your headline.
Agent Orb
FreeOne living shape for a voice assistant: idle, listening, thinking, speaking.
Thinking Shimmer
FreeA model's reasoning as a moving window that folds into a receipt.
Token Stream
FreeStreaming text that flows evenly instead of landing in bursts.
Tool Call Trail
FreeAn agent's tool calls drawn as a path, with a spark on the step running now.
Contour Field
FreeTopographic lines that shift slowly behind a section and part around the pointer.