Agent skill

Code Block Source Usage

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

Guidelines and rules for using the CodeBlockSource component, specifically handling how source files and code are read from the system in the Sona-UI repository.

MITAuto-check passedFrontend & Design

Install Code Block Source Usage

skills CLI

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

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

GitHub CLI

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

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

--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-source-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-source-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-source .gemini/skills/code-block-source-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-source-usage" agent skill from https://github.com/Dinil-Thilakarathne/sona-ui/tree/master/.agents/skills/code-block-source into .gemini/skills/code-block-source-usage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-block-source-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-source-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-source-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-source .github/skills/code-block-source-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-source-usage" agent skill from https://github.com/Dinil-Thilakarathne/sona-ui/tree/master/.agents/skills/code-block-source into .github/skills/code-block-source-usage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-block-source-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-source-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-source-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-source .opencode/skills/code-block-source-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-source-usage" agent skill from https://github.com/Dinil-Thilakarathne/sona-ui/tree/master/.agents/skills/code-block-source into .opencode/skills/code-block-source-usage/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-block-source-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-source-usage
GitHub stars: 118
Token cost: ~903 tokens
SKILL.md length: 351 words
Files: 1
Skills in repo: 10
Repo updated: Oct 7, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Guidelines and rules for using the CodeBlockSource component, specifically handling how source files and code are read from the system in the Sona-UI repository.

Works in 4 steps: Server Components Only → File Path Resolution → Graceful Error Handling → …
Frontend & Design work in your project
SKILL.md covers Rules & Constraints and Usage Example
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Code Block Source Usage is an agent skill from Dinil-Thilakarathne/sona-ui. Guidelines and rules for using the CodeBlockSource component, specifically handling how source files and code are read from the system in the Sona-UI repository.

Its SKILL.md is about 900 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Frontend & Design. It works with React. 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-source-usage skill to guideline and rules for using the CodeBlockSource component, specifically handling how source files and…”
“/code-block-source-usage”

Requirements

Node.js

Workflow steps

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

Server Components Only
File Path Resolution
Graceful Error Handling
Build Output Limits (Deployments)

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 Source Usage loads about 903 tokens when it runs. Until then it costs about 46 tokens; SKILL.md has 351 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~46
When it runs · the whole SKILL.md, loaded when a task matches: ~903

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). 351 words, ~903 tokens.

Download SKILL.mdSave it as .claude/skills/code-block-source-usage/SKILL.md (or your agent's skills folder).

name: code-block-source-usage
description: Guidelines and rules for using the CodeBlockSource component, specifically handling how source files and code are read from the system in the Sona-UI repository.

CodeBlockSource Component Guidelines

This skill details how CodeBlockSource actually reads files from the system and outlines the strict rules you must observe when integrating it into the project.

The CodeBlockSource relies on readFileContent (located in src/lib/file-utils.ts), which dynamically reads content from the disk using fs and path.

Rules & Constraints

When using CodeBlockSource or readFileContent, you must adhere to the following rules:

1. Server Components Only

CodeBlockSource is an asynchronous React Server Component that strictly uses the Node.js fs module to load file data.

Rule: You CANNOT import or use CodeBlockSource inside a component marked with "use client".
Reason: The fs module does not exist in the browser context and will cause bundling or runtime crashes.
Workaround: If you need code blocks in a client component, you must read the file in a parent server component, then pass the raw text string down to the basic CodeBlock component via the code prop.

2. File Path Resolution

All file paths passed into filePath are resolved relative to the absolute root directory of the project.

Rule: Always use paths originating from the root directory (e.g., src/components/... or public/...).
Rule: DO NOT use relative standard dot paths like ./my-file.tsx or ../components/my-file.tsx because readFileContent uses path.join(process.cwd(), filePath).

✅ Correct Example:

tsx

<CodeBlockSource filePath="src/components/code-block/code-block.tsx" language="tsx" />

❌ Incorrect Example:

tsx

// This will fail because it's relative to the current file, not process.cwd()
<CodeBlockSource filePath="./code-block.tsx" language="tsx" />

Show full SKILL.md (145 more words)Show less

3. Graceful Error Handling

If a file cannot be found (e.g., typo in the path, or a file was moved but the documentation wasn't updated), the application will not crash.

Behavior: readFileContent catches read exceptions, logs the exact error to the server console, and gracefully degrades by returning a string like: // Error reading file: <filePath>.
Rule: During development, if you see a crash comment in your UI code blocks, check the server terminal logs to identify the fs failure.

4. Build Output Limits (Deployments)

In platforms like Vercel (Next.js serverless functions), raw source files (like .tsx under src/) aren't always shipped to the production server runtime by default unless explicitly tracked.

Rule: If you find that CodeBlockSource works in local development but fails with missing file errors in production, you may need to enable experimental.outputFileTracingIncludes in your next.config.ts, or verify fs.readFile static analysis.

Usage Example

tsx

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

// This file must NOT have "use client";

export default function DocumentationPage() {
  return (
    <section>
      <h2>Button Component Reference</h2>
      
      {/* File read relative to project root */}
      <CodeBlockSource filePath="src/components/button/button.tsx" language="tsx">
        <CodeBlockPre lineNumbers>
          <CodeBlockCode />
        </CodeBlockPre>
      </CodeBlockSource>
    </section>
  );
}

Files

Just SKILL.md in .agents/skills/code-block-source of Dinil-Thilakarathne/sona-ui.

Open the folder on GitHubat commit 9a72ffe

Compare with similar skills

Code Block Source 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 Source Usage compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Code Block Source Usage this skillDinil-Thilakarathne/sona-ui	118	—	~903	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
React Router Developmentremix-run/react-router	57k	1 repos	~1.5k	Automated safety check: Pass	MIT	2 days ago
React UI State PatternsChrisWiles/claude-code-showcase	6.1k	8 repos	~1.6k	Automated safety check: Pass	None	9 mo ago
GSAP Core Animationgreensock/gsap-skills	16k	4 repos	~3.7k	Automated safety check: Pass	MIT	2 mo ago

Similar skills

Web Artifacts Builder
anthropics/skills
Official
Builds multi-component claude.ai HTML artifacts as a small React, TypeScript and Tailwind project, then bundles it into one shareable HTML file.
180k GitHub starsUsed in 41 repos~769 tokens
Frontend & DesignAuto-check passed
React Doctor
makeplane/plane
Scans React code for lint, accessibility, bundle size and architecture issues, reports a health score and checks that changes do not lower it.
61k GitHub starsUsed in 12 repos~657 tokens
Frontend & DesignAuto-check passed
React Router Development
remix-run/react-router
Guides work on React Router apps by first identifying whether the app uses Framework, Data or Declarative mode, then loading the matching reference and the installed package docs.
57k GitHub starsUsed in 1 repo~1.5k tokens
Frontend & DesignAuto-check passed
React UI State Patterns
ChrisWiles/claude-code-showcase
Sets patterns for React interfaces: when to show loading spinners or skeletons, how to surface errors, how to disable buttons during async work and how to handle empty lists.
6.1k GitHub starsUsed in 8 repos~1.6k tokens
Frontend & DesignAuto-check passed
GSAP Core Animation
greensock/gsap-skills
Covers the GSAP core API for tweens, easing, staggers, defaults and matchMedia, and when to choose GSAP over CSS animations or other JavaScript animation libraries.
16k GitHub starsUsed in 4 repos~3.7k tokens
Frontend & DesignAuto-check passed
LobeHub Interactive Prototype
lobehub/lobehub
Builds single-file interactive HTML prototypes rendered with the real LobeHub UI components and written as production-style React, so they can later be split into files.
83k GitHub stars~1.6k tokensUpdated today
Frontend & DesignAuto-check passed

More from Dinil-Thilakarathne/sona-ui

All 10 skills in this repo

Oklch Skill
Dinil-Thilakarathne/sona-ui
OKLCH color space for web projects. An agent skill from Dinil-Thilakarathne/sona-ui.
118 GitHub starsUsed in 1 repo~1.2k tokens
Auto-check passed
Sona UI
Dinil-Thilakarathne/sona-ui
Discover and integrate Sona UI registry components. An agent skill from Dinil-Thilakarathne/sona-ui.
118 GitHub stars~1.1k tokensUpdated yesterday
Auto-check passed
Smooth Shadow Ring
Dinil-Thilakarathne/sona-ui
A skill your agent uses when styling any elevated surface (card, dialog, popover, dropdown, menu, tooltip, sheet, toast) in a Tailwind project that has shadow-plugin installed.
118 GitHub starsUsed in 1 repo~1k tokens
Auto-check passed
Add Sona Component
Dinil-Thilakarathne/sona-ui
Integrate a new component into the Sona UI library end to end — the full per-component pipeline of writing the component, demo, docs, registry entry, nav link, playground controls, regenerating the…
118 GitHub stars~2.2k tokensUpdated yesterday
Auto-check passed
Component Anatomy
Dinil-Thilakarathne/sona-ui
Create a source-backed Inspection Board around an existing Sona UI component for social demonstrations and later documentation experiments.
118 GitHub stars~1.9k tokensUpdated yesterday
Auto-check passed
Design Motion Principles
Dinil-Thilakarathne/sona-ui
Motion and interaction design expert based on Emil Kowalski, Jakub Krehel, and Jhey Tompkins' techniques.
118 GitHub starsUsed in 1 repo~1.7k tokens
Auto-check passed

Works with

React

Questions about Code Block Source Usage

What does Code Block Source Usage do?

Guidelines and rules for using the CodeBlockSource component, specifically handling how source files and code are read from the system in the Sona-UI repository. Code Block Source Usage is an agent skill from Dinil-Thilakarathne/sona-ui. Guidelines and rules for using the CodeBlockSource component, specifically handling how source files and code are read from the system in the Sona-UI repository.

When should I use Code Block Source Usage?

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

How do I install Code Block Source Usage in Claude Code?

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

How do I install Code Block Source Usage in Codex?

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

Can I use Code Block Source 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-source-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-source-usage, .gemini/skills/code-block-source-usage, .github/skills/code-block-source-usage and .opencode/skills/code-block-source-usage in your project.

What does Code Block Source Usage need to run?

SKILL.md names no scripts, command-line tools or credentials: Code Block Source Usage is instructions for the agent only. Our summary lists: Node.js.

Does Code Block Source 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 Source 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 Source Usage use?

Code Block Source 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 Source Usage use?

About 903 tokens (SKILL.md is roughly 3.6k 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 Source Usage?

Skills that share tags, products or a category with Code Block Source Usage: Web Artifacts Builder (anthropics/skills, 180k stars), React Doctor (makeplane/plane, 61k stars), React Router Development (remix-run/react-router, 57k stars) and React UI State Patterns (ChrisWiles/claude-code-showcase, 6.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Code Block Source 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 Source Usage

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

CodeBlockSource Component Guidelines

Rules & Constraints

1. Server Components Only

2. File Path Resolution

3. Graceful Error Handling

4. Build Output Limits (Deployments)

Usage Example

Files

Compare with similar skills

Similar skills

More from Dinil-Thilakarathne/sona-ui

Related

Questions about Code Block Source Usage