How do I install the Astro I18N skill?

Run npx skillmds@latest add fusengine/astro-i18n-3 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.

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Which AI agents work with Astro I18N?

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Is Astro I18N free to use?

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Who published Astro I18N?

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

Astro I18N by fusengine — Agent Skill

Name: Astro I18N
Rating: 4.2 (5 reviews)
Author: fusengine

Astro I18N

Use when implementing internationalization in Astro, configuring i18n routing, setting up locale strategies, using getRelativeLocaleUrl/getAbsoluteLocaleUrl, handling Astro.currentLocale, or adding hreflang tags with sitemap.

fusengine Updated Sep 22, 2026

File contents

Astro i18n

Agent Workflow (MANDATORY)

Before ANY implementation, use TeamCreate to spawn 3 agents:

fuse-ai-pilot:explore-codebase - Analyze existing routing, content collections, and locale files
fuse-ai-pilot:research-expert - Verify latest Astro i18n docs via Context7/Exa
mcp__context7__query-docs - Check astro:i18n API and sitemap integration

After implementation, run fuse-ai-pilot:sniper for validation.

Overview

When to Use

Building multilingual Astro sites with locale-prefixed URLs
Configuring defaultLocale and routing strategies
Generating locale-aware links with getRelativeLocaleUrl()
Reading Astro.currentLocale in components and pages
Adding hreflang alternate links via @astrojs/sitemap
Translating content using Content Collections per locale

Built-in i18n (Astro 3.5+)

Astro's built-in i18n system provides:

File-based locale routing via src/pages/[locale]/
Routing strategies for URL prefix behavior
URL helper functions from astro:i18n
Middleware-based routing logic
Fallback locale configuration

Reference Guide

Concepts

Topic	Reference	When to Consult
Routing config	routing-config.md	Setup and config options
Strategies	strategies.md	prefix-always vs prefix-other-locales
Helper functions	helper-functions.md	getRelativeLocaleUrl and all helpers
Content translation	content-translation.md	Translating content collections
Sitemap hreflang	sitemap-hreflang.md	SEO alternate links
Fallback	fallback.md	Missing translation fallback

Templates

Template	When to Use
i18n-config.md	Full i18n configuration
locale-page.md	Page component with locale awareness
language-switcher.md	Language switcher component

Best Practices

Use getRelativeLocaleUrl() — never hardcode locale prefixes in links
Astro.currentLocale — read locale in components, not from URL manually
Content Collections per locale — organize translated content in src/content/[type]/[locale]/
Sitemap hreflang — always configure @astrojs/sitemap with i18n option for SEO
Fallback locales — configure fallback to prevent 404s for missing translations

Forbidden

Hardcoding locale strings in URL paths
Parsing the URL manually to detect locale (use Astro.currentLocale)
Skipping hreflang configuration for SEO-sensitive sites
Using getRelativeLocaleUrl without configuring site in Astro config

---name: astro-i18n-3description: Use when implementing internationalization in Astro, configuring i18n routing, setting up locale strategies, using getRelativeLocaleUrl/getAbsoluteLocaleUrl, handling Astro.currentLocale, or adding hreflang tags with sitemap.---# Astro i18n## Agent Workflow (MANDATORY)Before ANY implementation, use `TeamCreate` to spawn 3 agents:1. **fuse-ai-pilot:explore-codebase** - Analyze existing routing, content collections, and locale files2. **fuse-ai-pilot:research-expert** - Verify latest Astro i18n docs via Context7/Exa3. **mcp__context7__query-docs** - Check `astro:i18n` API and sitemap integrationAfter implementation, run **fuse-ai-pilot:sniper** for validation.---## Overview### When to Use- Building multilingual Astro sites with locale-prefixed URLs- Configuring `defaultLocale` and routing strategies- Generating locale-aware links with `getRelativeLocaleUrl()`- Reading `Astro.currentLocale` in components and pages- Adding `hreflang` alternate links via `@astrojs/sitemap`- Translating content using Content Collections per locale### Built-in i18n (Astro 3.5+)Astro's built-in i18n system provides:- File-based locale routing via `src/pages/[locale]/`- Routing strategies for URL prefix behavior- URL helper functions from `astro:i18n`- Middleware-based routing logic- Fallback locale configuration---## Reference Guide### Concepts| Topic | Reference | When to Consult ||-------|-----------|-----------------|| Routing config | [routing-config.md](references/routing-config.md) | Setup and config options || Strategies | [strategies.md](references/strategies.md) | prefix-always vs prefix-other-locales || Helper functions | [helper-functions.md](references/helper-functions.md) | getRelativeLocaleUrl and all helpers || Content translation | [content-translation.md](references/content-translation.md) | Translating content collections || Sitemap hreflang | [sitemap-hreflang.md](references/sitemap-hreflang.md) | SEO alternate links || Fallback | [fallback.md](references/fallback.md) | Missing translation fallback |### Templates| Template | When to Use ||----------|-------------|| [i18n-config.md](references/templates/i18n-config.md) | Full i18n configuration || [locale-page.md](references/templates/locale-page.md) | Page component with locale awareness || [language-switcher.md](references/templates/language-switcher.md) | Language switcher component |---## Best Practices1. **Use `getRelativeLocaleUrl()`** — never hardcode locale prefixes in links2. **`Astro.currentLocale`** — read locale in components, not from URL manually3. **Content Collections per locale** — organize translated content in `src/content/[type]/[locale]/`4. **Sitemap hreflang** — always configure `@astrojs/sitemap` with `i18n` option for SEO5. **Fallback locales** — configure `fallback` to prevent 404s for missing translations---## Forbidden- Hardcoding locale strings in URL paths- Parsing the URL manually to detect locale (use `Astro.currentLocale`)- Skipping hreflang configuration for SEO-sensitive sites- Using `getRelativeLocaleUrl` without configuring `site` in Astro config

Frequently asked questions