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Agent skill

I18n

by exelearning in exelearning/exelearning

Add or change source-level localized strings using (), c() or the Nunjucks trans filter; not catalog extraction.

AGPL-3.0Auto-check passedFrontend & Design

Install I18n

skills CLI
$ npx skills add exelearning/exelearning --skill i18n -a claude-code

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

GitHub CLI
$ gh skill install exelearning/exelearning 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/exelearning/exelearning.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/i18n .claude/skills/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/

Facts

Skill name
i18n
GitHub stars
145
Token cost
~812 tokens
SKILL.md length
314 words
Files
1
Skills in repo
17
Repo updated
First seen
Licence
AGPL-3.0

At a glance

Add or change source-level localized strings using (), c() or the Nunjucks trans filter; not catalog extraction.

  • Tasks that involve Internationalization
  • SKILL.md covers When to Use, Key Files, Patterns and Commands, plus 2 more sections
  • Calls make
  • Tasks that involve Translation

What it does

I18n is an agent skill from exelearning/exelearning. Add or change source-level localized strings using (), c() or the Nunjucks trans filter; not catalog extraction.

Its SKILL.md is about 810 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, covering Internationalization and Translation. The repository describes itself as: eXeLearning is an AGPL-licensed free/libre tool to create and publish open educational resources. The licence is AGPL-3.0.

When your agent uses it

  • Tasks that involve Internationalization
  • Tasks that involve Translation

Example prompts

  • “/i18n”

What it can do on your machine

Read from SKILL.md and the folder at commit 319b5d2. 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

    Shell commands in SKILL.md call:

    • make

    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

I18n loads about 812 tokens when it runs. Until then it costs about 30 tokens; SKILL.md has 314 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~30
When it runs · the whole SKILL.md, loaded when a task matches
~812

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 exelearning/exelearning at commit 319b5d2, republished under its AGPL-3.0 licence (© exelearning). 314 words, ~812 tokens.

Download SKILL.mdSave it as .claude/skills/i18n/SKILL.md (or your agent's skills folder).
name
i18n
description
Add or change source-level localized strings using _(), c_() or the Nunjucks trans filter; not catalog extraction.

Skill: Internationalization (i18n)

Completion: verify-change.

Parent: AGENTS.md | Related: frontend-module

When to Use

Adding source-level translatable strings or changing GUI/content locale behavior. Catalog edits require an explicit translation request and the xlf-translate procedure.

Key Files

  • translations/messages.*.xlf — translation files (en, es, ca, va, eu, gl, pt, eo, ro, etc.)
  • src/services/translation.ts — server-side translation service
  • public/app/locate/ — client-side localization helpers
  • views/*.njk — Nunjucks templates (use | trans filter)

Documentation: doc/development/internationalization.md

Patterns

JavaScript (public/app/):

javascript
button.title = `${_('Undo')} (Ctrl+Z)`;      // GUI string — translated per user's locale
const label = c_('Learning objectives');        // Content string — translated per content locale

Nunjucks (views/):

nunjucks
<button>{{ 'Save' | trans }}</button>
_() vs c_() — When to Use Which
FunctionContextExample
_()GUI strings (menus, tooltips, buttons)_('Save'), _('Undo')
c_()Content strings (exported with the project)c_('Learning objectives')

The distinction matters because the GUI language and the content language can differ (e.g., Spanish teacher creating English-language content).

Commands

bash
make fix                                 # Lint; use verify-change for affected behavior

make translations and make translations-cleanup are never run by agents. Key extraction and all XLF changes are managed by a dedicated separate process. See the prohibition below.

Gotchas

  • NEVER touch any file under translations/. This is a hard rule. Do not run make translations, do not add or remove <trans-unit> elements, do not write or edit <target> values. Code-localization PRs must not modify catalogs; explicitly requested translation work uses xlf-translate separately. Translation key extraction is handled by a separate automated process outside of code PRs.
  • Never hardcode English strings in UI code — even "OK" or "Cancel" must use _().
  • _() vs c_() confusion — using the wrong function means the string is translated in the wrong context. GUI strings → _(), content strings → c_().
  • Forgetting | trans in Nunjucks — raw English strings will appear in the UI for non-English users.
  • Static build config drift — if translated strings appear in config parameters, ensure both server and static builder use the same shared function. Duplicated config leads to untranslated strings in one of the two builds. Example: PR #1564.

Done When

  • All user-facing strings use _() / c_() / | trans
  • No file under translations/ has been modified
  • make translations has NOT been run
  • No hardcoded English in UI
  • make fix passes clean

© exelearning, AGPL-3.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/i18n of exelearning/exelearning.

Open the folder on GitHubat commit 319b5d2

Compare with similar skills

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.

I18n compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
I18n this skillexelearning/exelearning145—~812Automated safety check: PassAGPL-3.0
Chatbox i18n Translatorchatboxai/chatbox42k—~508Automated safety check: PassGPL-3.0
Internationalization Workflow with i18niOfficeAI/AionUi33k1 repos~1.9kAutomated safety check: PassApache-2.0
Enforce Rules For I18nmoeru-ai/airi50k—~1.5kAutomated safety check: PassMIT
Claude Desktop Chinese Localizationjavaht/claude-desktop-zh-cn7.5k—~1.6kAutomated safety check: PassMIT
Translation ReviewDevolutions/UniGetUI26k—~1.3kAutomated safety check: PassMIT

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 13 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 today
    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 2 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).

    156k GitHub stars~1k tokensUpdated today
    Frontend & DesignAuto-check passed

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  • Idevice

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  • Verify Change

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  • Websocket Yjs

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Categories

Questions about I18n

What does I18n do?

Add or change source-level localized strings using (), c() or the Nunjucks trans filter; not catalog extraction. I18n is an agent skill from exelearning/exelearning. Add or change source-level localized strings using (), c() or the Nunjucks trans filter; not catalog extraction.

When should I use I18n?

I18n fits situations like: tasks that involve Internationalization; tasks that involve Translation.

How do I install I18n in Claude Code?

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

How do I install I18n in Codex?

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

Can I use 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 exelearning/exelearning --skill 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/i18n, .gemini/skills/i18n, .github/skills/i18n and .opencode/skills/i18n in your project.

What does I18n need to run?

Going by SKILL.md and its folder, I18n needs the command-line tools its instructions call (make).

Does 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 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 I18n use?

I18n is published under the AGPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does I18n use?

About 812 tokens (SKILL.md is roughly 3.2k 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 I18n?

Skills that share tags, products or a category with 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 I18n?

exelearning (a GitHub organization) maintains it in exelearning/exelearning, which has 145 GitHub stars. The repository holds 17 skills in this directory. The repository was last updated on October 7, 2026.

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