Agent skill

Internationalization I18n

Implements multi-language support using i18next, gettext, or Intl API with translation workflows and RTL support.

Install Internationalization I18n

skills CLI

$ npx skills add secondsky/claude-skills --skill internationalization-i18n -a claude-code

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

GitHub CLI

$ gh skill install secondsky/claude-skills internationalization-i18n --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/secondsky/claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/internationalization-i18n/skills/internationalization-i18n .claude/skills/internationalization-i18n && 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 "internationalization-i18n" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/internationalization-i18n/skills/internationalization-i18n into .claude/skills/internationalization-i18n/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "internationalization-i18n", 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/secondsky/claude-skills/tree/main/plugins/internationalization-i18n/skills/internationalization-i18n

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 secondsky/claude-skills --skill internationalization-i18n -a codex

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

GitHub CLI

$ gh skill install secondsky/claude-skills internationalization-i18n --agent codex

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

Manual copy

$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/internationalization-i18n/skills/internationalization-i18n .agents/skills/internationalization-i18n && 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 "internationalization-i18n" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/internationalization-i18n/skills/internationalization-i18n into .agents/skills/internationalization-i18n/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "internationalization-i18n", 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 secondsky/claude-skills --skill internationalization-i18n -a cursor

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

GitHub CLI

$ gh skill install secondsky/claude-skills internationalization-i18n --agent cursor

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

Manual copy

$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/internationalization-i18n/skills/internationalization-i18n .cursor/skills/internationalization-i18n && 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 "internationalization-i18n" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/internationalization-i18n/skills/internationalization-i18n into .cursor/skills/internationalization-i18n/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "internationalization-i18n", 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/secondsky/claude-skills.git --path plugins/internationalization-i18n/skills/internationalization-i18n

--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 secondsky/claude-skills --skill internationalization-i18n -a gemini-cli

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

GitHub CLI

$ gh skill install secondsky/claude-skills internationalization-i18n --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/secondsky/claude-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/internationalization-i18n/skills/internationalization-i18n .gemini/skills/internationalization-i18n && 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 "internationalization-i18n" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/internationalization-i18n/skills/internationalization-i18n into .gemini/skills/internationalization-i18n/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "internationalization-i18n", 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 secondsky/claude-skills internationalization-i18n

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 secondsky/claude-skills --skill internationalization-i18n -a github-copilot

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

Manual copy

$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/internationalization-i18n/skills/internationalization-i18n .github/skills/internationalization-i18n && 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 "internationalization-i18n" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/internationalization-i18n/skills/internationalization-i18n into .github/skills/internationalization-i18n/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "internationalization-i18n", 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 secondsky/claude-skills --skill internationalization-i18n -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 secondsky/claude-skills internationalization-i18n --agent opencode

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

Manual copy

$ git clone --depth 1 https://github.com/secondsky/claude-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/internationalization-i18n/skills/internationalization-i18n .opencode/skills/internationalization-i18n && 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 "internationalization-i18n" agent skill from https://github.com/secondsky/claude-skills/tree/main/plugins/internationalization-i18n/skills/internationalization-i18n into .opencode/skills/internationalization-i18n/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "internationalization-i18n", 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: internationalization-i18n
GitHub stars: 227
Token cost: ~595 tokens
SKILL.md length: 70 words
Files: 2 (incl. references)
Skills in repo: 168
Repo updated: Sep 28, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Implements multi-language support using i18next, gettext, or Intl API with translation workflows and RTL support.

Building multilingual applications
SKILL.md covers i18next Setup (React), Pluralization, Date/Number Formatting and RTL Support, plus 2 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
Handling date/currency formatting

What it does

Internationalization I18n is an agent skill from secondsky/claude-skills. Implements multi-language support using i18next, gettext, or Intl API with translation workflows and RTL support. Use when building multilingual applications, handling date/currency formatting, or supporting right-to-left languages.

Its SKILL.md is about 600 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/frameworks.md`).

It sits in Frontend & Design, covering Internationalization and Translation. The repository describes itself as: Production-ready skills for Claude Code CLI - Cloudflare, React, Tailwind v4, and AI integrations. The licence is MIT.

When your agent uses it

Building multilingual applications
Handling date/currency formatting
Supporting right-to-left languages

Example prompts

“Use the internationalization-i18n skill to implement multi-language support using i18next, gettext, or Intl API with translation workflows and RTL…”
“/internationalization-i18n”

Requirements

Python 3

What it can do on your machine

Read from SKILL.md and the folder at commit 8837836. 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 javascript and css).
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

Internationalization I18n loads about 595 tokens when it runs, and up to ~2k if it reads all its reference files. Until then it costs about 65 tokens; SKILL.md has 70 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~65
When it runs · the whole SKILL.md, loaded when a task matches: ~595
With references · SKILL.md plus every file in references/, read only if the agent opens them: ~2k

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 secondsky/claude-skills at commit 8837836, republished under its MIT licence (© secondsky). 70 words, ~595 tokens.

Download SKILL.mdSave it as .claude/skills/internationalization-i18n/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.

name: internationalization-i18n
description: Implements multi-language support using i18next, gettext, or Intl API with translation workflows and RTL support. Use when building multilingual applications, handling date/currency formatting, or supporting right-to-left languages.
license: MIT

Internationalization (i18n)

Implement multi-language support with proper translation management and formatting.

i18next Setup (React)

javascript

import i18n from 'i18next';
import { initReactI18next } from 'react-i18next';
import LanguageDetector from 'i18next-browser-languagedetector';

i18n
  .use(LanguageDetector)
  .use(initReactI18next)
  .init({
    fallbackLng: 'en',
    interpolation: { escapeValue: false },
    resources: {
      en: { translation: { welcome: 'Welcome, {{name}}!' } },
      es: { translation: { welcome: '¡Bienvenido, {{name}}!' } }
    }
  });

// Usage
const { t } = useTranslation();
<h1>{t('welcome', { name: 'John' })}</h1>

Pluralization

javascript

// Translation file
{
  "items": "{{count}} item",
  "items_plural": "{{count}} items",
  "items_zero": "No items"
}

// Usage
t('items', { count: 0 })  // "No items"
t('items', { count: 1 })  // "1 item"
t('items', { count: 5 })  // "5 items"

Date/Number Formatting

javascript

// Dates
new Intl.DateTimeFormat('de-DE', {
  dateStyle: 'long',
  timeStyle: 'short'
}).format(new Date());

// Numbers
new Intl.NumberFormat('en-US', {
  style: 'currency',
  currency: 'USD'
}).format(1234.56);  // "$1,234.56"

// Relative time
new Intl.RelativeTimeFormat('en', { numeric: 'auto' })
  .format(-1, 'day');  // "yesterday"

RTL Support

css

/* Use logical properties */
.container {
  margin-inline-start: 1rem;  /* margin-left in LTR, margin-right in RTL */
  padding-inline-end: 1rem;
}

/* Direction attribute */
html[dir="rtl"] .icon {
  transform: scaleX(-1);
}

Additional Frameworks

See references/frameworks.md for:

React-Intl (Format.js) complete implementation
Python gettext with Flask/Babel
RTL language support patterns
ICU Message Format examples

Best Practices

Extract all user-facing strings
Use ICU message format for complex translations
Test with pseudo-localization
Support RTL from the start
Never concatenate translated strings
Use professional translators for production

Files

SKILL.md and 1 other file (references) in plugins/internationalization-i18n/skills/internationalization-i18n of secondsky/claude-skills.

SKILL.md
references/frameworks.md

Open the folder on GitHubat commit 8837836

Compare with similar skills

Internationalization I18n 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.

Internationalization I18n compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Internationalization I18n this skillsecondsky/claude-skills	227	—	~595	Automated safety check: Pass	MIT	11 days ago
Chatbox i18n Translatorchatboxai/chatbox	42k	—	~508	Automated safety check: Pass	GPL-3.0	15 days ago
Internationalization Workflow with i18niOfficeAI/AionUi	33k	1 repos	~1.9k	Automated safety check: Pass	Apache-2.0	1 mo ago
Enforce Rules For I18nmoeru-ai/airi	50k	—	~1.5k	Automated safety check: Pass	MIT	yesterday
Claude Desktop Chinese Localizationjavaht/claude-desktop-zh-cn	7.5k	—	~1.6k	Automated safety check: Pass	MIT	4 days ago
Translation ReviewDevolutions/UniGetUI	26k	—	~1.3k	Automated safety check: Pass	MIT	yesterday

Similar skills

Chatbox i18n Translator
chatboxai/chatbox
Translates new or changed i18n keys from a Chatbox Pro diff, staged changes or a commit range, writing the locale JSON files directly with a built-in glossary.
42k GitHub stars~508 tokensUpdated 15 days ago
Frontend & DesignAuto-check passed
Internationalization Workflow with i18n
iOfficeAI/AionUi
Standards for keeping all user-facing text translatable: read the i18n config first, use namespaced keys, reuse shared strings and follow the key naming rules.
33k GitHub starsUsed in 1 repo~1.9k tokens
Frontend & DesignAuto-check passed
Enforce Rules For I18n
moeru-ai/airi
Review pending AIRI translations on Crowdin in a batch, then sync them into the repository.
50k GitHub stars~1.5k tokensUpdated yesterday
Frontend & DesignAuto-check passed
Claude Desktop Chinese Localization
javaht/claude-desktop-zh-cn
Adds missing Simplified and Traditional Chinese translations to the Claude Desktop Chinese patch across three layers, then checks how many mappings actually hit.
7.5k GitHub stars~1.6k tokensUpdated 4 days ago
Frontend & DesignAuto-check passed
Translation Review
Devolutions/UniGetUI
Reviews UniGetUI .json language files for localization quality, detects parity issues, English-equal entries, wrong-script content, and cross-language outliers, then generates a dataset for…
26k GitHub stars~1.3k tokensUpdated yesterday
Frontend & DesignAuto-check passed
Frontend I18n
langflow-ai/langflow
Add, change, or review user-facing text in the Langflow frontend using the i18n system (i18next / react-i18next).
155k GitHub stars~1k tokensUpdated yesterday
Frontend & DesignAuto-check passed

More from secondsky/claude-skills

All 168 skills in this repo

Auto Animate
secondsky/claude-skills
AutoAnimate (@formkit/auto-animate) zero-config animations for React.
227 GitHub stars~2.9k tokensUpdated 11 days ago
Auto-check passed
Base UI React
secondsky/claude-skills
MUI Base UI unstyled React components with Floating UI. An agent skill from secondsky/claude-skills.
227 GitHub stars~1.9k tokensUpdated 11 days ago
Auto-check passed
Cloudflare Images
secondsky/claude-skills
This skill should be used when the user asks to "upload images to Cloudflare", "implement direct creator upload", "configure image transformations", "optimize WebP/AVIF", "create image variants"…
227 GitHub stars~3.6k tokensUpdated 11 days ago
Auto-check: notes
Cloudflare Nextjs
secondsky/claude-skills
Deploy Next.js to Cloudflare Workers via the OpenNext adapter (@opennextjs/cloudflare).
227 GitHub stars~5.3k tokensUpdated 11 days ago
Auto-check: notes
Cloudflare Sandbox
secondsky/claude-skills
Cloudflare Sandboxes SDK for secure code execution in Linux containers at edge.
227 GitHub stars~4.5k tokensUpdated 11 days ago
Auto-check passed
GitHub Project Automation
secondsky/claude-skills
GitHub repository automation (CI/CD, issue templates, Dependabot, CodeQL).
227 GitHub stars~4k tokensUpdated 11 days ago
Auto-check: notes

Questions about Internationalization I18n

What does Internationalization I18n do?

Implements multi-language support using i18next, gettext, or Intl API with translation workflows and RTL support. Internationalization I18n is an agent skill from secondsky/claude-skills. Implements multi-language support using i18next, gettext, or Intl API with translation workflows and RTL support.

When should I use Internationalization I18n?

Internationalization I18n fits situations like: building multilingual applications; handling date/currency formatting; supporting right-to-left languages.

How do I install Internationalization I18n in Claude Code?

Run `npx skills add secondsky/claude-skills --skill internationalization-i18n -a claude-code`. Or copy the skill folder (plugins/internationalization-i18n/skills/internationalization-i18n in secondsky/claude-skills) into .claude/skills/internationalization-i18n in your project. Claude Code loads it when a task matches its description.

How do I install Internationalization I18n in Codex?

Run `npx skills add secondsky/claude-skills --skill internationalization-i18n -a codex`. Or copy the skill folder (plugins/internationalization-i18n/skills/internationalization-i18n in secondsky/claude-skills) into .agents/skills/internationalization-i18n in your project. Codex loads it when a task matches its description.

Can I use Internationalization I18n 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 secondsky/claude-skills --skill internationalization-i18n -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/internationalization-i18n, .gemini/skills/internationalization-i18n, .github/skills/internationalization-i18n and .opencode/skills/internationalization-i18n in your project.

What does Internationalization I18n need to run?

SKILL.md names no scripts, command-line tools or credentials: Internationalization I18n is instructions for the agent only. Our summary lists: Python 3.

Does Internationalization I18n 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 Internationalization I18n 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 Internationalization I18n use?

Internationalization I18n is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Internationalization I18n use?

About 595 tokens (SKILL.md is roughly 2.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.4k tokens, read only when the agent opens those files.

What are the alternatives to Internationalization I18n?

Skills that share tags, products or a category with Internationalization I18n: Chatbox i18n Translator (chatboxai/chatbox, 42k stars), Internationalization Workflow with i18n (iOfficeAI/AionUi, 33k stars), Enforce Rules For I18n (moeru-ai/airi, 50k stars) and Claude Desktop Chinese Localization (javaht/claude-desktop-zh-cn, 7.5k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Internationalization I18n?

secondsky (a GitHub user) maintains it in secondsky/claude-skills, which has 227 GitHub stars. The repository holds 168 skills in this directory. The repository was last updated on September 28, 2026.

Source: secondsky/claude-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Internationalization I18n

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Internationalization (i18n)

i18next Setup (React)

Pluralization

Date/Number Formatting

RTL Support

Additional Frameworks

Best Practices

Files

Compare with similar skills

Similar skills

More from secondsky/claude-skills

Related

Questions about Internationalization I18n