How do I install the I18N Handbook skill?

Run npx skillmds@latest add bh611627/i18n-handbook in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

What does the I18N Handbook skill do?

Internationalization for Next.js App Router - locale routing, message files, and RTL layout checks It is listed under Web & Frontend on SkillMD.

Is I18N Handbook safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with I18N Handbook?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is I18N Handbook free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published I18N Handbook?

bh611627 (@bh611627) published this skill. Their other Agent Skills are listed on their SkillMD profile.

I18N Handbook by bh611627 — Agent Skill

Name: I18N Handbook
Author: bh611627

File contents

Instructions

When to Use

Use for locales, routing, message files, RTL notes.
Prefer seo-expert for hreflang and locale metadata depth.
Prefer next-server-patterns for locale-aware RSC.

Plan i18n for Next.js App Router without locking to one vendor library unless the repo already uses it.

Routing: [locale] segment vs subdomain - pros for SEO and DX; pick one.
Message catalogs: namespace per feature; avoid mega JSON files.
SEO: hreflang pairs, canonical per locale, localized titles in metadata.
RTL: dir on html or layout wrapper; mirror spacing where needed.
Dates and numbers: Intl or established lib - match stack.

Outcomes

Locale routing sketch + message file tree + SEO checklist.

Output Rules

Bullets; no full translation file content unless user provides strings.

Scope and boundaries

In scope: routing, catalogs, metadata, RTL checklist.
Out of scope: legal translation procurement, TMS integration.

Safety

Read-only; do not call paid translation APIs.

Troubleshooting

404 on locale: middleware matcher and default redirect.
Wrong locale flash: cookie vs accept-language priority documented.

Related skills

seo-expert - hreflang and locale metadata
next-server-patterns - locale-aware RSC
markdown-pipeline - localized MDX

GitHub: https://github.com/bh611627/skillcodex/tree/main/skills/i18n-handbook/SKILL.md
npm: https://www.npmjs.com/package/@skillcodex/skills

Frequently asked questions