astro-islands SKILL.md skillA

This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.

astro-islands from fusengine/claude-plugins is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add fusengine/claude-plugins/astro-islands@git:20260904.5f1d30f

Pins git:20260904.5f1d30f in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
fusengine/claude-plugins
Path
plugins/astro-expert/skills/astro-islands/SKILL.md
Versions recorded
5
Latest version
git:20260904.5f1d30f, committed Sep 4, 2026
First version recorded
Mar 17, 2026
Size
4,365 bytes
Repository stars
34
License
MIT

Use when adding interactivity to Astro pages via client:* directives or rendering dynamic server content with server:defer.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file 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

The exact contents, by fingerprint
mdr add fusengine/claude-plugins/astro-islands@sha256:b3c8206a700bfa42

The line at the top of this page pins the label git:20260904.5f1d30f, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_vma25fn4fasy3z4y.svg)](https://markdownregistry.com/a/art_vma25fn4fasy3z4y)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Mar 17, 2026 and Sep 4, 2026, about one every 43 days.

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. Fixed automatic checks with no AI involved, so the same checks give the 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/claude-plugins · 34 stars · license MIT · pushed 2026-10-30 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_vma25fn4fasy3z4y
GET https://markdownregistry.com/api/v1/resolve?ref=fusengine/claude-plugins/astro-islands
GET https://markdownregistry.com/api/v1/blob/b3c8206a700bfa42551afe5405a923ee06660eaaa128b8ebd7dc55cb0dee2d39

Your AI assistant 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.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in fusengine/claude-plugins

Other files named astro-islands

astro-islands SKILL.md skill
fusengine/agents · plugins/astro-expert/skills/astro-islands/SKILL.md · Use when adding interactivity to Astro pages via client:* directives or rendering dynamic server content with…
git:20260904.5f1d30f · audit A · 34 stars

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