Agent skill

Code Block Usage

by Dinil-Thilakarathne in Dinil-Thilakarathne/sona-ui

Instructions and guidelines for using the code-block components (CodeBlock, CodeBlockSource, InternalCodeBlock) within the sona-ui repository.

MITAuto-check passedFrontend & Design

Install Code Block Usage

skills CLI

$ npx skills add Dinil-Thilakarathne/sona-ui --skill code-block-usage -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install Dinil-Thilakarathne/sona-ui code-block-usage --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/Dinil-Thilakarathne/sona-ui.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/code-block .claude/skills/code-block-usage && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "code-block-usage" agent skill from https://github.com/Dinil-Thilakarathne/sona-ui/tree/master/.agents/skills/code-block into .claude/skills/code-block-usage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-block-usage", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/Dinil-Thilakarathne/sona-ui/tree/master/.agents/skills/code-block

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add Dinil-Thilakarathne/sona-ui --skill code-block-usage -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install Dinil-Thilakarathne/sona-ui code-block-usage --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Dinil-Thilakarathne/sona-ui.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/code-block .agents/skills/code-block-usage && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "code-block-usage" agent skill from https://github.com/Dinil-Thilakarathne/sona-ui/tree/master/.agents/skills/code-block into .agents/skills/code-block-usage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-block-usage", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Dinil-Thilakarathne/sona-ui --skill code-block-usage -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install Dinil-Thilakarathne/sona-ui code-block-usage --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Dinil-Thilakarathne/sona-ui.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/code-block .cursor/skills/code-block-usage && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "code-block-usage" agent skill from https://github.com/Dinil-Thilakarathne/sona-ui/tree/master/.agents/skills/code-block into .cursor/skills/code-block-usage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-block-usage", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/Dinil-Thilakarathne/sona-ui.git --path .agents/skills/code-block

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add Dinil-Thilakarathne/sona-ui --skill code-block-usage -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install Dinil-Thilakarathne/sona-ui code-block-usage --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Dinil-Thilakarathne/sona-ui.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/code-block .gemini/skills/code-block-usage && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "code-block-usage" agent skill from https://github.com/Dinil-Thilakarathne/sona-ui/tree/master/.agents/skills/code-block into .gemini/skills/code-block-usage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-block-usage", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install Dinil-Thilakarathne/sona-ui code-block-usage

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add Dinil-Thilakarathne/sona-ui --skill code-block-usage -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/Dinil-Thilakarathne/sona-ui.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/code-block .github/skills/code-block-usage && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "code-block-usage" agent skill from https://github.com/Dinil-Thilakarathne/sona-ui/tree/master/.agents/skills/code-block into .github/skills/code-block-usage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-block-usage", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Dinil-Thilakarathne/sona-ui --skill code-block-usage -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install Dinil-Thilakarathne/sona-ui code-block-usage --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Dinil-Thilakarathne/sona-ui.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/code-block .opencode/skills/code-block-usage && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "code-block-usage" agent skill from https://github.com/Dinil-Thilakarathne/sona-ui/tree/master/.agents/skills/code-block into .opencode/skills/code-block-usage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-block-usage", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: code-block-usage
GitHub stars: 118
Token cost: ~1.3k tokens
SKILL.md length: 441 words
Files: 4
Skills in repo: 10
Repo updated: Oct 7, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Instructions and guidelines for using the code-block components (CodeBlock, CodeBlockSource, InternalCodeBlock) within the sona-ui repository.

Works in 3 steps: CodeBlock → CodeBlockSource → InternalCodeBlock
Frontend & Design work in your project
SKILL.md covers Available Components, Technical Dependencies, Best Practices and Reference Files
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Code Block Usage is an agent skill from Dinil-Thilakarathne/sona-ui. Instructions and guidelines for using the code-block components (CodeBlock, CodeBlockSource, InternalCodeBlock) within the sona-ui repository.

Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files (for example `reference/code-block-source.md`, `reference/code-block.md` and `reference/internal-code-block.md`).

It sits in Frontend & Design. The repository describes itself as: A modern UI component library built with React and TailwindCSS to help you build beautiful and accessible web applications faster. The licence is MIT.

When your agent uses it

Frontend & Design work in your project

Example prompts

“Use the code-block-usage skill to instruction and guidelines for using the code-block components (CodeBlock, CodeBlockSource, InternalCodeBlock)…”
“/code-block-usage”

Workflow steps

3 steps, taken from the step headings in SKILL.md.

CodeBlock
CodeBlockSource
InternalCodeBlock

What it can do on your machine

Read from SKILL.md and the folder at commit 9a72ffe. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Code Block Usage loads about 1.3k tokens when it runs. Until then it costs about 40 tokens; SKILL.md has 441 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~40
When it runs · the whole SKILL.md, loaded when a task matches: ~1.3k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from Dinil-Thilakarathne/sona-ui at commit 9a72ffe, republished under its MIT licence (© Dinil-Thilakarathne). 441 words, ~1,274 tokens.

Download SKILL.mdSave it as .claude/skills/code-block-usage/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.

name: code-block-usage
description: Instructions and guidelines for using the code-block components (CodeBlock, CodeBlockSource, InternalCodeBlock) within the sona-ui repository.

Code Block Components in Sona-UI

This skill describes how to correctly utilize the suite of code-block components available within the sona-ui repository: CodeBlock, CodeBlockSource, and InternalCodeBlock. These components provide rich syntax highlighting using Shiki, line highlighting, and diff support.

Available Components

1. `CodeBlock`

Location: src/components/code-block/code-block.tsx

This is the main foundational block that creates a context-aware boundary. It provides elements like tabs, header, line numbers, and floating copy capabilities.

Usage: Use CodeBlock when you need maximum granular control over the UI, explicitly laying out headers, tabs, or applying specific stylings to the <pre> wrapper.

tsx

import { CodeBlock, CodeBlockHeader, CodeBlockPre, CodeBlockCode } from "@/components/code-block/code-block";

<CodeBlock code={"const x = 1;"} language="typescript" showDiff={false} highlightLines={[1]}>
  <CodeBlockHeader filename="example.ts" />
  <CodeBlockPre lineNumbers={true}>
    <CodeBlockCode />
  </CodeBlockPre>
</CodeBlock>

Props:

code (string): The raw code to be highlighted.
language (string): The syntax highlighting language (default: javascript).
floatingCopy (boolean): Shows a floating copy button overlay.
highlightLines (number[] | string): Array of line numbers to highlight differently.
focusLines (number[] | string): Blurs out lines that are not in focus.
showDiff (boolean): Indicates deleted/added lines using the [data-diff] lines internally.

2. `CodeBlockSource`

Location: src/components/code-block/code-block-source.tsx

This component takes a filePath (or falls back to code prop) to dynamically read the exact source code of a file from the disk and pass it down into the CodeBlock.

Usage: Ideal for documentation pages where you want the code block to stay intrinsically synchronized with the file's current truth instead of manually copy-pasting code snippets into your TSX. Requires usage within a server component since it performs filesystem reads (readFileContent).

tsx

import { CodeBlockSource } from "@/components/code-block/code-block-source";

// Usage in a server component
<CodeBlockSource filePath="src/components/button/button.tsx" language="tsx">
  <CodeBlockPre>
    <CodeBlockCode />
  </CodeBlockPre>
</CodeBlockSource>

3. `InternalCodeBlock`

Location: src/components/code-block/internal-code-block.tsx

A pre-wired abstraction perfectly suited for simple code block rendering without boilerplate.

Usage: When you just want to pass code, language, and filename and get a standard block structure.

tsx

import { InternalCodeBlock } from "@/components/code-block/internal-code-block";

<InternalCodeBlock
  code="console.log('Hello');"
  language="javascript"
  filename="hello.js"
/>

Show full SKILL.md (183 more words)Show less

Technical Dependencies

When modifying or working with these components, be aware of the following cross-dependencies:

Shiki: Handles syntax highlighting dynamically.
Base UI: Components like <Menu> and styling merge utilities (@base-ui/react/use-render, @base-ui/react/merge-props).
Icons: lucide-react for standard UI icons and @icons-pack/react-simple-icons for language-specific glyphs.
Internal Components:
- Tabs from @/components/tabs/tabs
- ScrollArea from @/components/scroll-area/scroll-area
- CopyButton from ../copy-button/copy-button
- readFileContent from @/lib/file-utils (For CodeBlockSource)

Best Practices

Prefer CodeBlockSource for internal code: When referencing files already within the sona-ui repository, use CodeBlockSource with absolute paths relative to root or workspace relative paths that readFileContent supports. This keeps documentation synced with reality.
Handle Context properly: CodeBlockHeader, CodeBlockPre, CodeBlockLanguage, CodeBlockCode, etc., must be placed inside <CodeBlock>, as they consume context (like lines, nodes, code, showDiff).
Use the built-in diff functionality: When showcasing changes to code, instead of manually typing - and +, use showDiff and let the component's internal shiki parsing colorize the deltas appropriately via the standard patch formatting.

Reference Files

If you need to bootstrap these components into another standalone project, full source code for the components is provided in the reference/ block of this skill.

code-block.tsx
code-block-source.tsx
internal-code-block.tsx

Files

SKILL.md and 3 other files in .agents/skills/code-block of Dinil-Thilakarathne/sona-ui.

SKILL.md
reference/code-block-source.md
reference/code-block.md
reference/internal-code-block.md

Open the folder on GitHubat commit 9a72ffe

Compare with similar skills

Code Block Usage next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Code Block Usage compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Code Block Usage this skillDinil-Thilakarathne/sona-ui	118	—	~1.3k	Automated safety check: Pass	MIT	yesterday
Web Artifacts Builderanthropics/skills	180k	41 repos	~769	Automated safety check: Pass	Apache-2.0	3 days ago
React Doctormakeplane/plane	61k	12 repos	~657	Automated safety check: Pass	AGPL-3.0	yesterday
Impeccablebestofjs/bestofjs	3.1k	27 repos	~2.6k	Automated safety check: Pass	MIT	4 days ago
Figma Design System Builderwarpdotdev/warp	65k	2 repos	~4.4k	Automated safety check: Pass	AGPL-3.0	today
Web Interface Guidelines Reviewervercel-labs/openreview	1.7k	98 repos	~308	Automated safety check: Pass	None	7 mo ago

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Questions about Code Block Usage

What does Code Block Usage do?

Instructions and guidelines for using the code-block components (CodeBlock, CodeBlockSource, InternalCodeBlock) within the sona-ui repository. Code Block Usage is an agent skill from Dinil-Thilakarathne/sona-ui. Instructions and guidelines for using the code-block components (CodeBlock, CodeBlockSource, InternalCodeBlock) within the sona-ui repository.

When should I use Code Block Usage?

Code Block Usage fits situations like: frontend & Design work in your project.

How do I install Code Block Usage in Claude Code?

Run `npx skills add Dinil-Thilakarathne/sona-ui --skill code-block-usage -a claude-code`. Or copy the skill folder (.agents/skills/code-block in Dinil-Thilakarathne/sona-ui) into .claude/skills/code-block-usage in your project. Claude Code loads it when a task matches its description.

How do I install Code Block Usage in Codex?

Run `npx skills add Dinil-Thilakarathne/sona-ui --skill code-block-usage -a codex`. Or copy the skill folder (.agents/skills/code-block in Dinil-Thilakarathne/sona-ui) into .agents/skills/code-block-usage in your project. Codex loads it when a task matches its description.

Can I use Code Block Usage in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Dinil-Thilakarathne/sona-ui --skill code-block-usage -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/code-block-usage, .gemini/skills/code-block-usage, .github/skills/code-block-usage and .opencode/skills/code-block-usage in your project.

What does Code Block Usage need to run?

SKILL.md names no scripts, command-line tools or credentials: Code Block Usage is instructions for the agent only.

Does Code Block Usage access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Code Block Usage safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Code Block Usage use?

Code Block Usage is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Code Block Usage use?

About 1.3k tokens (SKILL.md is roughly 5.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Code Block Usage?

Skills that share tags, products or a category with Code Block Usage: Web Artifacts Builder (anthropics/skills, 180k stars), React Doctor (makeplane/plane, 61k stars), Impeccable (bestofjs/bestofjs, 3.1k stars) and Figma Design System Builder (warpdotdev/warp, 65k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Code Block Usage?

Dinil-Thilakarathne (a GitHub user) maintains it in Dinil-Thilakarathne/sona-ui, which has 118 GitHub stars. The repository holds 10 skills in this directory. The repository was last updated on October 7, 2026.

Source: Dinil-Thilakarathne/sona-ui on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Code Block Usage

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Code Block Components in Sona-UI

Available Components

1. CodeBlock

2. CodeBlockSource

3. InternalCodeBlock

Technical Dependencies

Best Practices

Reference Files

Files

Compare with similar skills

Similar skills

More from Dinil-Thilakarathne/sona-ui

Related

Questions about Code Block Usage

1. `CodeBlock`

2. `CodeBlockSource`

3. `InternalCodeBlock`