Marker

Displays an inline status, system note, bordered row, or labeled separator in a conversation.

Switched to a new branch

Thinking...

Conversation compacted

Explored 4 files

import { GitBranchIcon, SearchIcon } from "@/components/icons"
import { Marker, MarkerContent, MarkerIcon } from "@/components/ui/marker"
import { Spinner } from "@/components/ui/spinner"

export function MarkerDemo() {
  return (
    <div class="flex w-full max-w-sm flex-col gap-8 py-12">
      <Marker>
        <MarkerIcon>
          <GitBranchIcon />
        </MarkerIcon>
        <MarkerContent>Switched to a new branch</MarkerContent>
      </Marker>
      <Marker role="status">
        <MarkerIcon>
          <Spinner />
        </MarkerIcon>
        <MarkerContent class="shimmer">Thinking...</MarkerContent>
      </Marker>
      <Marker variant="separator">
        <MarkerContent>Conversation compacted</MarkerContent>
      </Marker>
      <Marker>
        <MarkerIcon>
          <SearchIcon />
        </MarkerIcon>
        <MarkerContent>Explored 4 files</MarkerContent>
      </Marker>
    </div>
  )
}

The Marker component displays inline conversation markers such as status updates, system notes, bordered rows, and labeled separators. Compose it with Message in a conversation thread.

Installation

pnpm dlx shadcnui-hono-jsx@latest add marker

npx shadcnui-hono-jsx@latest add marker

yarn dlx shadcnui-hono-jsx@latest add marker

bunx shadcnui-hono-jsx@latest add marker

Usage

import { Marker, MarkerContent, MarkerIcon } from "@/components/ui/marker"

<Marker>
  <MarkerIcon>
    <CheckIcon />
  </MarkerIcon>
  <MarkerContent>Explored 4 files</MarkerContent>
</Marker>

Composition

Use the following composition to build a marker:

Marker
├── MarkerIcon
└── MarkerContent

Features

Inline marker, bordered row, and labeled separator variants
Decorative icon slot that is hidden from assistive tech
Polymorphic root via render for link and button markers
Pairs with the shimmer utility for streaming status text
Customizable styling through the className prop on every part

Variants

Use variant to switch between an inline marker, bordered row, and labeled separator.

A default marker for inline notes.

A separator marker

A border marker for row boundaries.

import { Marker, MarkerContent } from "@/components/ui/marker"

export function MarkerVariantsDemo() {
  return (
    <div class="flex w-full max-w-sm flex-col gap-8 py-12">
      <Marker>
        <MarkerContent>A default marker for inline notes.</MarkerContent>
      </Marker>
      <Marker variant="separator">
        <MarkerContent>A separator marker</MarkerContent>
      </Marker>
      <Marker variant="border">
        <MarkerContent>A border marker for row boundaries.</MarkerContent>
      </Marker>
    </div>
  )
}

Variant	Description
`default`	An inline marker for status, notes, and actions.
`border`	A default marker with a bottom border under the row.
`separator`	A centered label with divider lines on each side.

Status

Set role="status" and include a Spinner for streaming or in-progress markers so updates are announced.

Compacting conversation

Running tests

import { Marker, MarkerContent, MarkerIcon } from "@/components/ui/marker"
import { Spinner } from "@/components/ui/spinner"

export function MarkerStatusDemo() {
  return (
    <div class="flex w-full max-w-sm flex-col gap-8 py-12">
      <Marker role="status">
        <MarkerIcon>
          <Spinner />
        </MarkerIcon>
        <MarkerContent>Compacting conversation</MarkerContent>
      </Marker>
      <Marker variant="separator" role="status">
        <MarkerIcon>
          <Spinner />
        </MarkerIcon>
        <MarkerContent>Running tests</MarkerContent>
      </Marker>
    </div>
  )
}

Shimmer

Add the shimmer utility class to MarkerContent for an animated streaming-text effect. The utility ships with the shadcn package — see the shimmer docs for installation.

Thinking...

Reading 4 files

import { Marker, MarkerContent } from "@/components/ui/marker"

export function MarkerShimmerDemo() {
  return (
    <div class="flex w-full max-w-sm flex-col gap-8 py-12">
      <Marker role="status">
        <MarkerContent class="shimmer">Thinking...</MarkerContent>
      </Marker>
      <Marker variant="separator" role="status">
        <MarkerContent class="shimmer">Reading 4 files</MarkerContent>
      </Marker>
    </div>
  )
}

Separator

Use the separator variant for labeled dividers, such as dates or section breaks, in a conversation.

Today

Worked for 42s

Conversation compacted

import { Marker, MarkerContent } from "@/components/ui/marker"

export function MarkerSeparatorDemo() {
  return (
    <div class="flex w-full max-w-sm flex-col gap-8 py-12">
      <Marker variant="separator">
        <MarkerContent>Today</MarkerContent>
      </Marker>
      <Marker variant="separator">
        <MarkerContent>Worked for 42s</MarkerContent>
      </Marker>
      <Marker variant="separator">
        <MarkerContent>Conversation compacted</MarkerContent>
      </Marker>
    </div>
  )
}

Border

Use the border variant for status rows that should keep the default marker alignment while separating the next row.

Switched to release-candidate

Reviewed 8 related files

Opened implementation notes

import { FileTextIcon, GitBranchIcon, SearchIcon } from "@/components/icons"
import { Marker, MarkerContent, MarkerIcon } from "@/components/ui/marker"

export function MarkerBorderDemo() {
  return (
    <div class="flex w-full max-w-sm flex-col gap-3 py-12">
      <Marker variant="border">
        <MarkerIcon>
          <GitBranchIcon />
        </MarkerIcon>
        <MarkerContent>Switched to release-candidate</MarkerContent>
      </Marker>
      <Marker variant="border">
        <MarkerIcon>
          <SearchIcon />
        </MarkerIcon>
        <MarkerContent>Reviewed 8 related files</MarkerContent>
      </Marker>
      <Marker variant="border">
        <MarkerIcon>
          <FileTextIcon />
        </MarkerIcon>
        <MarkerContent>Opened implementation notes</MarkerContent>
      </Marker>
    </div>
  )
}

With Icon

Use MarkerIcon to render an icon alongside the content. Use flex-col to stack the icon above the content.

Switched to a new branch

Explored 4 files

Syncing completed

import { BookOpenCheck, GitBranchIcon, SearchIcon } from "@/components/icons"
import { Marker, MarkerContent, MarkerIcon } from "@/components/ui/marker"

export function MarkerIconDemo() {
  return (
    <div class="flex w-full max-w-sm flex-col gap-12 py-12">
      <Marker>
        <MarkerIcon>
          <GitBranchIcon />
        </MarkerIcon>
        <MarkerContent>Switched to a new branch</MarkerContent>
      </Marker>
      <Marker variant="separator">
        <MarkerIcon>
          <SearchIcon />
        </MarkerIcon>
        <MarkerContent>Explored 4 files</MarkerContent>
      </Marker>
      <Marker class="flex-col">
        <MarkerIcon>
          <BookOpenCheck />
        </MarkerIcon>
        <MarkerContent>Syncing completed</MarkerContent>
      </Marker>
    </div>
  )
}

Links and Buttons

Turn a marker into a link or button with the render prop on Marker.

View the pull request

import { GitBranchIcon, RotateCcwIcon } from "@/components/icons"
import { Marker, MarkerContent, MarkerIcon } from "@/components/ui/marker"

export function MarkerLinkButtonDemo() {
  return (
    <div class="flex w-full max-w-sm flex-col gap-8 py-12">
      <Marker render={<a href="#links-and-buttons" />}>
        <MarkerIcon>
          <GitBranchIcon />
        </MarkerIcon>
        <MarkerContent>View the pull request</MarkerContent>
      </Marker>
      <Marker
        render={
          <button
            type="button"
            class="transition-colors hover:text-foreground"
            data-toast-trigger=""
            data-toast-title="You clicked the revert button"
          />
        }
      >
        <MarkerIcon>
          <RotateCcwIcon />
        </MarkerIcon>
        <MarkerContent>Revert this change</MarkerContent>
      </Marker>
    </div>
  )
}

import { Marker, MarkerContent } from "@/components/ui/marker"

export function MarkerLinkDemo() {
  return (
    <Marker render={<a href="#" />}>
      <MarkerContent>View the pull request</MarkerContent>
    </Marker>
  )
}

Accessibility

Marker is presentational by default. The correct semantics depend on how you use it, so choose the role based on intent rather than relying on a single default.

Status and Progress

For streaming or progress markers such as "Thinking..." or a running tool, set role="status" so assistive tech announces the update as it appears. Marker forwards role to the underlying element.

<Marker role="status">
  <MarkerIcon>
    <Spinner />
  </MarkerIcon>
  <MarkerContent>Compacting conversation</MarkerContent>
</Marker>

Labeled Separators

A separator that carries text, such as a date or a section label, needs no role. The divider lines are decorative CSS pseudo-elements, and the text is announced as ordinary content.

<Marker variant="separator">
  <MarkerContent>Today</MarkerContent>
</Marker>

Note: Do not add role="separator" to a labeled divider. A separator takes its accessible name from aria-label, not from its text, and its contents are treated as presentational, so the visible label would not be announced. Reserve role="separator" for a divider with no meaningful text.

Bordered Markers

A bordered marker keeps the same semantics as the default marker. The bottom border is decorative, so choose role="status", render, or no role based on the marker's purpose.

<Marker variant="border">
  <MarkerIcon>
    <FileTextIcon />
  </MarkerIcon>
  <MarkerContent>Opened implementation notes</MarkerContent>
</Marker>

Decorative Icons

MarkerIcon is decorative and hidden from assistive tech with aria-hidden, so the adjacent MarkerContent carries the meaning. For an icon-only marker, provide an aria-label or visible text so it is not announced as empty.

<Marker aria-label="Synced">
  <MarkerIcon>
    <CheckIcon />
  </MarkerIcon>
</Marker>

Interactive Markers

When a marker links or triggers an action, render it as a real <button> or <a> with the render prop so it is focusable and exposes the correct role. The accessible name comes from the marker text.

<Marker render={<a href="/files" />}>
  <MarkerIcon>
    <FileTextIcon />
  </MarkerIcon>
  <MarkerContent>Explored 4 files</MarkerContent>
</Marker>

Notes

render is supported on the server (element or function), like Base UI.
Accepts class instead of className.
Upstream documentation: shadcn/ui Marker. See also Differences from shadcn/ui.

API Reference

Marker

The root marker element. The file also exports markerVariants for composing the marker styles into custom components.

Prop	Type	Default	Description
`variant`	`"default" \| "border" \| "separator"`	`"default"`	The marker layout.
`render`	`ReactElement \| function`	-	Render as a different element, such as a link.
`className`	`string`	-	Additional classes to apply to the root element.

MarkerIcon

A decorative icon slot. Hidden from assistive tech with aria-hidden.

Prop	Type	Default	Description
`className`	`string`	-	Additional classes to apply to the icon slot.

MarkerContent

The marker text content.

Prop	Type	Default	Description
`className`	`string`	-	Additional classes to apply to the content slot.

Label Menubar