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SKILL verified MIT Self-run

Astro I18n

skill-fusengine-agents-astro-i18n · by fusengine

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.

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Install

$ agentstack add skill-fusengine-agents-astro-i18n

✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • Prompt-injection patterns
  • Secret / credential exfiltration
  • Dangerous shell & filesystem operations
  • Untrusted network calls
  • Known-malicious package signatures

What it can access

  • Network access No
  • Filesystem access No
  • Shell / process execution No
  • Environment & secrets No
  • Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

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Reliability & compatibility

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Declared compatibility

Claude CodeClaude Desktop

Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

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About

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 files
  2. fuse-ai-pilot:research-expert - Verify latest Astro i18n docs via Context7/Exa
  3. 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](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 Practices

  1. Use getRelativeLocaleUrl() — never hardcode locale prefixes in links
  2. Astro.currentLocale — read locale in components, not from URL manually
  3. Content Collections per locale — organize translated content in src/content/[type]/[locale]/
  4. Sitemap hreflang — always configure @astrojs/sitemap with i18n option for SEO
  5. 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

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.