# migrate

Plans and runs a move to Astro or an Astro version upgrade. Useful when an existing app has to be taken apart piece by piece instead of rewritten blind.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 363 installs · ★ 14
- Author: incluud
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/incluud/astro-agent-skills/tree/HEAD/skills/migrate/SKILL.md
- Updated: 2026-04-23
- HTML: https://affpapa.org/en/nevibecode/skills/incluud-migrate

## What it does

The skill kicks in when you move a project from another framework to Astro, turn a static site into Astro, or upgrade an existing Astro codebase. It starts with an inventory: routing, shared shells, data sources, styling, interactive components, image handling, deployment and runtime needs. That decides whether the target ends up static, hybrid or server-rendered.

Then it walks the migration: pick the shape, map concepts instead of copying files, rebuild routing and data flow, keep interactivity in islands. Shared wrappers go to `src/layouts/`, routes to `src/pages/`, structured content to `src/content/`. Framework components stay only where they still earn their place; static content usually becomes `.astro`. Validation covers route parity, metadata and head output, images, forms, keyboard navigation and the build.

There is a separate section for Astro upgrades. For Astro 6 it lists the breakpoints: Node 22.12.0 or newer, content collections in `src/content.config.*` with a `loader` for every collection, `Astro.glob()` replaced by `import.meta.glob()` or `getCollection()`, `<ViewTransitions />` swapped for `<ClientRouter />`. Any leftover `legacy.collections` config has to go. Check the runtime before you dig into code, because some post-upgrade failures are just a Node version mismatch.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add incluud/astro-agent-skills --skill migrate -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/migrate/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/migrate/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add incluud/astro-agent-skills --skill migrate -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/migrate/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add incluud/astro-agent-skills --skill migrate -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/migrate/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install incluud/astro-agent-skills migrate
```

2. **Manually: put the files in place**
- File: `.github/skills/migrate/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add incluud/astro-agent-skills --skill migrate -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/incluud/astro-agent-skills --path skills/migrate
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/migrate/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add incluud/astro-agent-skills --skill migrate -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/incluud/astro-agent-skills/tree/HEAD/skills/migrate/SKILL.md

## When to use it
- move a static site to Astro without a full rewrite
- split a Next.js or Nuxt app into Astro pages and interactive islands
- port a Gatsby content pipeline to content collections
- upgrade Astro across a major version without missing breaking changes
- verify route and metadata parity after a migration

## Example prompts
- migrate this project to Astro, start by inventorying the current system
- move routes and shared shells into src/pages and src/layouts, keep interactivity as islands
- upgrade the project to Astro 6 and check the breakpoints from the guide

## Source text · SKILL.md · MIT

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BEGIN THIRD-PARTY FILE f0b8868ee01dca93
```text
---
name: migrate
description: Plan and execute migrations to Astro or between Astro versions with minimal regressions.
---

# Migrate to Astro

Use this skill when moving a project from another framework to Astro, converting a static site into Astro, or upgrading an existing Astro codebase.

If `astro-best-practices` is available, apply it alongside this skill so the migrated result follows good Astro defaults rather than just reproducing the old system mechanically.

## Workflow

### 1. Inventory the current system

Before changing code, identify:

- routing structure
- layout/shared shell patterns
- data sources
- styling strategy
- interactive components
- image handling
- deployment/runtime requirements

This determines whether the target should be static, hybrid, or server-rendered.

### 2. Choose the migration shape

Common patterns:

- static HTML to Astro pages and layouts
- Next.js or Nuxt to Astro pages plus framework islands
- Gatsby content/data flows to content collections
- Astro major-version upgrades using the official upgrade guide

Prefer an incremental migration plan when the existing app has meaningful runtime behavior or a large interactive surface.

### 3. Map concepts instead of copying files blindly

Typical mappings:

| Source | Astro target |
| --- | --- |
| shared app shell | layout |
| route component | page or dynamic route |
| markdown/content pipeline | content collection |
| framework-only widget | island with client directive |
| image helper | `astro:assets` or the project’s current image strategy |

Keep framework components only where they still add value. Static content should usually become `.astro`.

### 4. Rebuild the routing and data flow

For each migrated slice:

- recreate routes in `src/pages/`
- move shared wrappers into `src/layouts/`
- migrate structured content into `src/content/`
- replace framework-specific fetching patterns with Astro frontmatter or content APIs

When a page was using `getStaticPaths`-style route generation before, rebuild it explicitly in Astro rather than simulating the old framework lifecycle.

### 5. Handle interactivity as islands

Do not port an entire framework app into Astro unchanged unless that is a deliberate compatibility bridge.

Instead:

- keep the static shell in `.astro`
- preserve framework components for interactive islands
- choose client directives intentionally
- minimize the hydrated surface
```
END THIRD-PARTY FILE f0b8868ee01dca93

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