---
title: "Monitor Astro sites"
canonical: "https://lemwatch.com/monitor/astro"
framework: "Astro"
last_verified: "2026-08-11"
source: "https://lemwatch.com"
---

# Monitor Astro sites

Monitor Astro sites for build drift, hydration errors, and stale islands.

## Common failure modes

- Partial hydration JS bundles missing after CDN purge
- View Transitions failing on cross-origin navigations
- Sitemap integration outputting wrong canonical host

## Typical hosts

- Netlify
- Vercel
- Cloudflare Pages
- GitHub Pages

## How we fingerprint this stack

astro-island custom elements and /_astro/ asset paths

_Canonical HTML page: https://lemwatch.com/monitor/astro_