Shadcn Code Block Streaming Agent

Streaming agent response. Built by composing Badge, Button, Code Block, Scroll Area. A free, open source shadcn code block example you can install with npx shadcn@latest add @reui/c-code-block-3 and edit as your own code.

Agent writing code in real time with a caret and stick-to-bottom.

For AI Agents

Hand your agent this brief or the ReUI MCP, not a screenshot. Free to install.

Best for: A route handler typed out 3 characters per tick, with a Generating badge, a Replay button and a ScrollArea that follows the caret

When to use

Assistant replies and agent output that stream code, or lines a reader picks to ask about
Code review of diffs, git patches and diagnostics, with accept, reject and fix actions
Docs snippets and terminal or test logs with line numbers, copy, wrap, folding and search

When not to use

A reply that mixes prose with fenced snippets in one message: use the Code Block AI Chat example
A full assistant conversation screen with thread list, transcript and composer: use the AI Chat blocks
A discount or promo code shown for a shopper to copy at checkout: use the Coupon blocks
A release console with environment lanes, a deploy history grid and streaming logs: use the Dev Ops blocks

Agent notes

target and the setLength timer fake the stream; pass your model's growing text as code and drive streaming from its status
Line specs such as highlightedLines, diff and folded count source lines from 1, whatever startLine prints in the gutter
maxLines caps height only on the built-in surface; with CodeBlockContent inside your own ScrollArea, cap that viewport yourself
Hoist transformers to module scope; a new array on every render re-tokenizes the whole file

Markdownhttps://reui.io/components/code-block/c-code-block-3.md

MCPget_example("c-code-block-3")

Installnpx shadcn@latest add @reui/c-code-block-3

Full index for agents:llms.txtReUI MCP setup

Shadcn Components in Code Block Streaming Agent

About Shadcn Code Block Streaming Agent

What You Can Build With Shadcn Code Block Streaming Agent

Composes Badge, Button, Code Block, Scroll Area, so it drops into any project already using those components.
Install it with the shadcn CLI: npx shadcn@latest add @reui/c-code-block-3
Open source and free, with the full source on this page to copy or adapt.

More Shadcn Code Block Examples

Basic Basic code block
Pinned Copy Pinned copy button
AI Chat AI chat with code fences
Diff Summary Diff with change summary
Transformer Diff Diff via shiki transformers
Highlights Highlighted lines and words
Focus Walkthrough Focus walkthrough
Terminal Output Terminal output
Long File Long file with expand
Diagnostics & Actions Line actions and diagnostics
Line Selection Line selection
Search In File Search in file

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Data Grid
Open-source shadcn data grid components for sorting and filtering, virtualized tables, and admin dashboards.

Frequently Asked Questions

When should I use Shadcn Code Block Streaming Agent?

Use it for a route handler typed out 3 characters per tick, with a Generating badge, a Replay button and a ScrollArea that follows the caret.

Shadcn Code Block as a whole fits:

Assistant replies and agent output that stream code, or lines a reader picks to ask about
Code review of diffs, git patches and diagnostics, with accept, reject and fix actions
Docs snippets and terminal or test logs with line numbers, copy, wrap, folding and search

For a reply that mixes prose with fenced snippets in one message, use the Code Block AI Chat example. For a full assistant conversation screen with thread list, transcript and composer, use the AI Chat blocks. For a discount or promo code shown for a shopper to copy at checkout, use the Coupon blocks. For a release console with environment lanes, a deploy history grid and streaming logs, use the Dev Ops blocks.

How do I install Shadcn Code Block Streaming Agent?

Run npx shadcn@latest add @reui/c-code-block-3. The CLI copies the source into your project, so you own the code and can edit it freely.

Is Shadcn Code Block Streaming Agent free to use?

Yes. Every ReUI component example is open source and free for personal and commercial projects.

Which components does Shadcn Code Block Streaming Agent use?

It composes Badge, Button, Code Block, Scroll Area. The shadcn CLI installs those alongside the example.

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