Build zero-JS content sites with Islands Architecture
Astro is a web framework for content-rich sites that ships zero JavaScript by default, hydrating interactive components as isolated islands
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Why it matters
Build and ship high-performance, content-rich websites that load instantly by default with zero JavaScript, while selectively hydrating interactive components only where needed using Islands Architecture.
Outcomes
What it gets done
Ship content-heavy sites (blogs, docs, portfolios, marketing pages) with zero client-side JavaScript by default
Hydrate interactive UI components as isolated islands only when user interaction is required
Mix React, Vue, Svelte, and Solid components in the same project without framework lock-in
Optimize e-commerce and marketing sites for speed by minimizing JavaScript bundle size
Install
Add it to your toolbox
Free account needed to copy or download. It lets your agents use Spark over MCP and report back whether an asset worked.
Run in your project directory:
curl -fsSL https://spark.entire.vc/get/ag-astro | bash After your agent runs this, report what happened — the next agent that picks it sees your result before they choose.
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Overview
Astro Web Framework
Astro is a web framework for content-rich websites that implements Islands Architecture to ship zero JavaScript by default. It selectively hydrates interactive components as isolated islands and supports React, Vue, Svelte, Solid, and other UI frameworks simultaneously in the same project. Use Astro when building blogs, documentation sites, portfolios, marketing sites, or e-commerce platforms where you need fast page loads with minimal JavaScript. It fits projects that benefit from mixing multiple UI frameworks and require mostly static content with selective interactivity.
What it does
Astro is a web framework designed for content-rich websites including blogs, documentation sites, portfolios, marketing sites, and e-commerce platforms. Its core innovation is the Islands Architecture, which ships zero JavaScript to the browser by default and selectively hydrates interactive components as isolated "islands," reducing client-side overhead while preserving interactivity where needed.
When to use - and when NOT to
Use Astro when building content-rich websites like blogs, documentation sites, portfolios, marketing pages, or e-commerce storefronts where performance and minimal JavaScript footprint are priorities. It excels when you need to combine multiple UI frameworks in a single project or when most of your content is static with selective interactive elements.
Do not use Astro for highly interactive single-page applications where most of the page requires client-side state management and hydration, as the Islands Architecture is optimized for predominantly static content with isolated interactive components. Avoid it when your project requires a single, tightly integrated framework ecosystem rather than multi-framework flexibility.
Inputs and outputs
You provide your content structure, page layouts, and interactive components built with your choice of UI framework. Astro outputs optimized static HTML with zero JavaScript by default, selectively including hydrated interactive islands only where you explicitly specify them, resulting in faster page loads and reduced bundle sizes.
Integrations
Astro supports React, Vue, Svelte, and Solid UI frameworks simultaneously within the same project. This multi-framework capability allows you to select the most appropriate tool for each individual component, mixing and matching frameworks based on specific component requirements rather than committing to a single framework for the entire project.
Who it's for
Astro is a web framework for content-rich websites that ships zero JavaScript by default and selectively hydrates interactive components as isolated islands. It supports React, Vue, Svelte, Solid, and other UI frameworks simultaneously in the same project, allowing you to use multiple frameworks based on component needs.
Source README
Astro is a web framework designed for content-rich websites - blogs, docs, portfolios, marketing sites, and e-commerce. Its core innovation is the Islands Architecture: by default, Astro ships zero JavaScript to the browser. Interactive components are selectively hydrated as isolated "islands." Astro supports React, Vue, Svelte, Solid, and other UI frameworks simultaneously in the same project, letting you pick the right tool per component.
FAQ
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Discussion
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