astro

Astro is an all-in-one web framework for building fast, content-focused websites. It uses an islands architecture that ships zero JavaScript by default, hydrating only interactive components on demand. Components from React, Svelte, Vue, Solid, and Preact can coexist in a single project.

When to use: Content-driven sites (blogs, docs, marketing), portfolios, e-commerce storefronts, any site where most pages are primarily static with isolated interactive regions.

When NOT to use: Highly interactive single-page applications (dashboards, real-time collaboration tools), apps requiring full client-side routing with shared global state across all components.

Astro web framework patterns for content-driven sites. Covers content collections with Zod schemas and loaders, island architecture with selective hydration directives, view transitions with ClientRouter, server-side and hybrid rendering modes, server islands, Astro DB with astro:db, middleware with onRequest, and framework integrations (React, Svelte, Vue). Use when building content-driven websites, configuring island hydration strategies, setting up view transitions, choosing between static and server rendering, integrating UI framework components, defining content collection schemas, or adding middleware. Source: oakoss/agent-skills.