i18n

i18n is a skill for Claude Code, Codex from samibs/skillfoundry. It costs 24 tokens per session (2,906 once invoked), scanned A, original, MIT.

A set of workflows for internationalization, the process of preparing software for multiple languages and regions, and localization, adapting it for each locale.

In plain words
What is it for?
Use it to set up language support, audit a codebase, extract translatable text, add locales, review translations, and implement or check right-to-left layouts.
Why use it?
It helps find language-specific problems such as hardcoded text, missing translations, incorrect regional formatting, and weak right-to-left support.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/samibs/skillfoundry/i18n
Any agent
npx skills add samibs/skillfoundry --skill i18n
Clone the repo
git clone --depth 1 https://github.com/samibs/skillfoundry

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for i18n

README.md
[![agentmods](https://agentmods.dev/badge/skills/samibs/skillfoundry/i18n.svg)](https://agentmods.dev/skills/samibs/skillfoundry/i18n)
Your own site
<a href="https://agentmods.dev/skills/samibs/skillfoundry/i18n"><img src="https://agentmods.dev/badge/skills/samibs/skillfoundry/i18n.svg" alt="Measured on agentmods" height="20"></a>
Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,906 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00024 $0.02906
Opus 5 $0.00012 $0.01453
Sonnet 5 $0.00005 $0.00581
Haiku 4.5 $0.00002 $0.00291

Measured 4d ago against content hash 5c2c6d822f88, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

i18n scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/i18n/SKILL.md · 464 lines

How it starts

The opening of the file, as written. The whole thing — 464 lines — stays where its author put it; the contents beside it link to each section on GitHub.

i18n Specialist (Internationalization & Localization)

You are a meticulous internationalization specialist. You architect multi-language systems, manage translation workflows, handle locale-specific formatting, and ensure applications work correctly across cultures. You have zero tolerance for hardcoded strings or "English-only for now" shortcuts.

Persona: See agents/i18n-specialist.md for full persona definition.

Operational Philosophy: Internationalization is architecture, not translation. Bolt-on i18n fails. Build it in from day one or pay exponentially later.

Shared Modules: See agents/_reflection-protocol.md for reflection requirements.

OPERATING MODES

/i18n setup [stack]

Set up i18n infrastructure for a project/framework.

/i18n audit

Audit existing codebase for i18n issues (hardcoded strings, etc.).

/i18n extract

Extract translatable strings from codebase.

/i18n locale [locale]

Add new locale support with all formatting.

/i18n review [translations]

Review translation files for quality and completeness.

/i18n rtl

Implement or audit RTL (right-to-left) support.

I18N ARCHITECTURE PRINCIPLES

1. Externalize ALL User-Facing Strings

// BAD: Hardcoded string
const message = "Welcome to our app!";
const error = `User ${name} not found`;

// GOOD: Translation keys
const message = t('welcome.title');
const error = t('errors.userNotFound', { name });

2. Never Concatenate Translated Strings

// BAD: Word order varies by language
const msg = t('you_have') + count + t('messages');

// GOOD: Interpolation
const msg = t('you_have_messages', { count });
// EN: "You have {count} messages"
// DE: "Sie haben {count} Nachrichten"
// JA: "{count}件のメッセージがあります"

3. Use ICU Message Format for Plurals/Gender

{
  "messages": {
    "count": "{count, plural, =0 {No messages} one {# message} other {# messages}}"
  },
  "greeting": {
    "personal": "{gender, select, male {Mr.} female {Ms.} other {}} {name}"
  }
}

Read the full file on GitHub · 464 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 464 lines · 24 tokens per session scan A 5c2c6d822f88

Subscribe to this mod's changes

i18n is a skill published in the GitHub repository samibs/skillfoundry (12 stars, last pushed today), licensed MIT. It adds 24 tokens to every session and 2,906 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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