fusengine/astro-i18n
plugins/astro-expert/skills/astro-i18n/SKILL.md
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.
$ install --global
skillsauthnpx skillsauth add fusengine/agents astro-i18nInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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SKILL.md
- name:
- astro-i18n
- description:
- 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:
- 7
- user-invocable:
- true
- references:
- references/routing-config.md, references/strategies.md, references/helper-functions.md, references/content-translation.md, references/sitemap-hreflang.md, references/fallback.md, references/templates/i18n-config.md, references/templates/locale-page.md, references/templates/language-switcher.md
- related-skills:
- astro-7, astro-content, astro-seo, solid-astro
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:i18nAPI 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
defaultLocaleand routing strategies - Generating locale-aware links with
getRelativeLocaleUrl() - Reading
Astro.currentLocalein components and pages - Adding
hreflangalternate 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/sitemapwithi18noption for SEO - Fallback locales — configure
fallbackto 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
getRelativeLocaleUrlwithout configuringsitein Astro config
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