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.
npx skills add aj-geddes/useful-ai-prompts --skill internationalization-i18ngit clone --depth 1 https://github.com/aj-geddes/useful-ai-promptsWrote 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.
[](https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/internationalization-i18n)<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/internationalization-i18n"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/internationalization-i18n/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/internationalization-i18n"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/internationalization-i18n.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00060 | $0.00922 |
| Opus 5.5 | $0.00024 | $0.00369 |
| Sonnet 5.5 | $0.00012 | $0.00184 |
| Haiku 4.5 | $0.00006 | $0.00092 |
Grade A, and why
internationalization-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 2mo 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.
How it starts
The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Internationalization (i18n) & Localization
Table of Contents
Overview
Comprehensive guide to implementing internationalization and localization in applications. Covers message translation, pluralization, date/time/number formatting, RTL languages, and integration with popular i18n libraries.
When to Use
- Building multi-language applications
- Supporting international users
- Implementing language switching
- Formatting dates, times, and numbers for different locales
- Supporting RTL (right-to-left) languages
- Extracting and managing translation strings
- Implementing pluralization rules
- Setting up translation workflows
Quick Start
Minimal working example:
// i18n.ts
import i18next from "i18next";
import Backend from "i18next-http-backend";
import LanguageDetector from "i18next-browser-languagedetector";
await i18next
.use(Backend)
.use(LanguageDetector)
.init({
fallbackLng: "en",
debug: process.env.NODE_ENV === "development",
interpolation: {
escapeValue: false, // React already escapes
},
backend: {
loadPath: "/locales/{{lng}}/{{ns}}.json",
},
detection: {
order: ["querystring", "cookie", "localStorage", "navigator"],
caches: ["localStorage", "cookie"],
},
});
// ... (see reference guides for full implementation)
Reference Guides
Detailed implementations in the references/ directory:
| Guide | Contents |
|---|---|
| i18next (JavaScript/TypeScript) | i18next (JavaScript/TypeScript) |
| React-Intl (Format.js) | React-Intl (Format.js) |
| Python i18n (gettext) | Python i18n (gettext) |
| Date and Time Formatting | Date and Time Formatting |
| Number and Currency Formatting | Number and Currency Formatting |
| Pluralization Rules | Pluralization Rules |
| RTL (Right-to-Left) Language Support | RTL (Right-to-Left) Language Support |
| Translation Management | Translation Management |
| Locale Detection | Locale Detection |
| Server-Side i18n | Server-Side i18n |
What ships with it
11 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- references/date-and-time-formatting.md 2.2 KB
- references/i18next-javascripttypescript.md 3.6 KB
- references/locale-detection.md 1.1 KB
- references/number-and-currency-formatting.md 1.5 KB
- references/pluralization-rules.md 1.6 KB
- references/python-i18n-gettext.md 1.7 KB
- references/react-intl-formatjs.md 1.3 KB
- references/rtl-right-to-left-language-support.md 1.6 KB
- references/server-side-i18n.md 746 B
- references/translation-management.md 1.9 KB
- templates/component-template.tsx 318 B
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.
- 2mo ago First seen · 116 lines · 60 tokens per session scan A a17d7fbfca9e
internationalization-i18n is a skill published in the GitHub repository aj-geddes/useful-ai-prompts (376 stars, last pushed 8mo ago), licensed MIT. It adds 60 tokens to every session and 922 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-03.
internationalization-i18n compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| internationalization-i18naj-geddes/useful-ai-prompts | Skill | 376 | 8mo ago | MIT | A | 60 | Claude Code, Codex |
| intl-expansionalirezarezvani/claude-skills | Skill | 29k | yesterday | MIT | A | 27 | Claude Code |
| azure-ai-translation-text-pymicrosoft/skills | Skill | 3.2k | yesterday | MIT | A | 60 | Claude Code |
| chinese-documentationjnMetaCode/superpowers-zh | Skill | 8.5k | 11d ago | MIT | A | 62 | Claude Code |
| hardenfengshao1227/ccg-workflow | Skill | 6.0k | 5d ago | MIT | A | 62 | Claude Code |
| edit-sitemicrosoft/power-platform-skills | Skill | 1.1k | yesterday | MIT | A | 104 | Claude Code |
| asc-subscription-localizationrorkai/app-store-connect-cli-skills | Skill | 1.1k | yesterday | MIT | A | 60 | Claude Code |