Home / fusengine / agents · plugins/astro-expert/skills/astro-islands/SKILL.md · GitHub

astro-islands skillA

astro-islands is agent-read markdown (skill) from fusengine/agents: Use when adding interactivity to Astro pages via client:* directives or rendering dynamic server content with server:defer..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

What the file says

<objective>
Implements Astro's Islands Architecture: partial hydration via `client:load`, `client:idle`, `client:visible`, `client:media="(query)"`, and `client:only="framework"`, plus Server Islands via `server:defer` (with `slot="fallback"` placeholders) for personalized or auth-gated content rendered after initial page load without blocking SSR.

Also covers `transition:persist` for preserving component state across View Transitions, and prop serialization rules for data crossing the server/client boundary. Does not cover installing the underlying UI framework itself (astro-integrations) or Server Actions used inside islands (astro-actions) — those are separate skills.
</objective>

# Astro Islands Expert

Partial hydration architecture: zero JS by default, selective interactivity via directives.

## Agent Workflow (MANDATORY)

Before ANY implementation, spawn 3 agents in parallel, one `Agent` call each with a `name`:

1. **fuse-ai-pilot:explore-codebase** - Analyze existing components and hydration patterns
2. **fuse-ai-pilot:research-expert** - Verify latest Islands docs via Context7/Exa
3. **mcp__context7__query-docs** - Get client directive and server:defer examples
…

Read the whole file at its exact version.

How to install

Latest version
mdr add fusengine/agents/astro-islands@git:20260904.5f1d30f
Exact content
mdr add fusengine/agents/astro-islands@sha256:b3c8206a700bfa42

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

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Versions

versioncommittedcommitsizeaudit
git:20260904.5f1d30f latest2026-09-04 5f1d30f 4,365 BA view · diff
git:20260729.3b91eed2026-07-29 3b91eed 4,336 BA view · diff
git:20260715.2c1b77f2026-07-15 2c1b77f 3,791 BA view · diff
git:20260326.d0c22442026-03-26 d0c2244 3,791 BA view · diff
git:20260317.3052aa92026-03-17 3052aa9 3,671 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (4365 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

fusengine/agents · 28 stars · license MIT · pushed 2026-09-24 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_lkm7mkcfdf33r3to
GET https://markdownregistry.com/api/v1/resolve?ref=fusengine/agents/astro-islands
GET https://markdownregistry.com/api/v1/blob/b3c8206a700bfa42551afe5405a923ee06660eaaa128b8ebd7dc55cb0dee2d39

Your agent does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

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