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Code Block

Line Callouts

A code walkthrough with callouts: marked lines get a numbered circle, and a legend under the listing explains every number in words.

React + Tailwind, shadcn-compatible: press “Copy for AI” and your Cursor or Claude Code agent installs it with the shadcn CLI.

What you can change

  • the listing rows through the lines array
  • the callouts through the notes array with a line number and a text
  • the file path through path

A link for your AI agent: preview, code and instructions.

Preview

1440pxHost theme
Line Callouts — A code walkthrough with callouts: marked lines get a numbered circle, and a legend under the listing explains every number in words.

Use it with AI

  1. 1. Copy the link.
  2. 2. Write to your agent in your own words and drop the link into the sentence.
  3. 3. The agent opens the link and installs the component from the registry.
AI
1Pick it here

put this on the home page as the hero:

https://vibeui.club/c/codeblock-018?lang=en&theme=dark

2Paste into the chat
3Get it in your project

Not sure where to paste it? Step-by-step guide

Show the full instructions

What the link says, spelled out. Use it when your agent cannot open links — paste this text instead.

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How to use

<Codeblock018
  path="middleware.ts"
  showLegend={true}
/>

A sample call. The agent installs the component itself from the registry via the “Copy for AI” link.

Settings

File
path · default: middleware.ts
Legend
showLegend · default: on
Background
background · default: theme colour

More in Code Block

FAQ

How do I add Line Callouts with Cursor or Claude Code?
Press “Copy for AI” on this page and paste it into your agent's chat. The instruction contains the shadcn CLI install command, the dependencies and what to keep, so the agent installs this exact component instead of recreating a lookalike.
What does Line Callouts depend on?
No npm packages beyond React and Tailwind CSS.
What can I change in Line Callouts?
Adapt: the listing rows through the lines array; the callouts through the notes array with a line number and a text; the file path through path. Keep as installed: the local --vibeui-codeblock-018-* palette — do not swap it for your theme tokens; the circle in ::after: moved into the markup it lands in the clipboard and breaks the pasted code; numbering the legend with a counter: hand-typed numbers eventually drift away from the callouts.
Is Line Callouts free?
Yes. The preview is open without an account; with a free account you can copy up to 20 components a month.

For developers

npx shadcn@latest add https://vibeui.club/r/pro/codeblock-018.json

This command needs a signed link: sign in and open “Component source” below — it issues a working link valid for 30 minutes. All install options

Technical notes

The component is self-contained: one file, zero dependencies, its own palette in the local --vibeui-codeblock-018-* variables. Server component: no hooks. The numbered circle is printed by ::after through content: attr(data-note), so the explanations do not go into the clipboard along with the code. The numbers in the legend are counted by a CSS counter from the list item order, and the numbers in the code come from the same map — they cannot diverge. An empty line is given a min-height: a block span with no content would collapse to zero and the spacing between the pieces of code would be lost. The block is light and carries its own surface.

Tags

  • code
  • annotation
  • docs
  • light
Component source

The same file your agent installs. Here in case you would rather copy it by hand.

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