HeroUI v2 to v3 Migration Guide

This skill helps agents migrate HeroUI v2 applications to v3. HeroUI v3 introduces breaking changes: compound components, no Provider, Tailwind v4, and removed hooks.

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Installation

curl -fsSL https://heroui.com/install | bash -s heroui-migration

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CRITICAL: Always Fetch Migration Docs Before Applying

Do NOT assume v2 patterns work in v3. Always fetch migration guides before implementing changes.

Key v2 → v3 Changes

Feature	v2 (Migrate From)	v3 (Migrate To)
Provider	<HeroUIProvider> required	No Provider needed
Component API	Flat props: <Card title="x">	Compound: <Card><Card.Header>
Event handlers	onClick	onPress
Styling	classNames prop	className prop
Hooks	useSwitch, useDisclosure, etc.	Compound components, useOverlayState
Packages	@heroui/system, @heroui/theme	@heroui/react, @heroui/styles

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Accessing Migration Documentation

For migration details, examples, and step-by-step guides, always fetch documentation:

Using Scripts

# List all available component migration guides
node scripts/list_migration_guides.mjs

# Get main migration workflow (full or incremental)
node scripts/get_migration_guide.mjs full
node scripts/get_migration_guide.mjs incremental

# Get component-specific migration guides
node scripts/get_component_migration_guides.mjs button
node scripts/get_component_migration_guides.mjs button card modal

# Get styling migration guide
node scripts/get_styling_migration_guide.mjs

# Get hooks migration guide
node scripts/get_hooks_migration_guide.mjs

Direct URLs

Migration docs (preview): use a concrete guide URL from the examples below, and never fetch a URL that still contains a placeholder.

Examples:

• Full migration: .../agent-guide-full.mdx
• Incremental: .../agent-guide-incremental.mdx
• Button: .../button.mdx
• Styling: .../styling.mdx
• Hooks: .../hooks.mdx

Override base URL with HEROUI_MIGRATION_DOCS_BASE when docs are merged to production.

MCP Alternative

When using Cursor or other MCP clients, configure the Migration MCP server for tool-based access:

{
  "mcpServers": {
    "heroui-migration": {
      "url": "https://migration-mcp.heroui.com"
    }
  }
}

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Migration Strategies

Full Migration

• Best for: Projects that can dedicate focused time; teams comfortable with temporarily broken code
• Migrate all component code first (project broken during migration)
• Switch dependencies to v3
• Complete styling migration

Incremental Migration

• Best for: Projects that must stay functional; large codebases migrating gradually
• Set up coexistence (pnpm aliases or component packages)
• Migrate components one-by-one
• Both v2 and v3 coexist during migration

Always fetch the agent guide before starting: node scripts/get_migration_guide.mjs full or incremental

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Core Principles

1. Fetch first: Use scripts to get migration guides before applying changes
2. Compound components: v3 uses Card.Header, Card.Title, Button with children—not flat props
3. No Provider: Remove HeroUIProvider when migrating
4. onPress not onClick: All interactive components use onPress
5. Workflow: Analyze → Migrate components → Switch deps → Styling migration

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Migration Workflow Summary

1. Create migration branch
2. Analyze project (HeroUI imports, component usage)
3. Fetch main guide: node scripts/get_migration_guide.mjs full
4. Migrate components in batches (fetch component guides per batch)
5. Switch dependencies to v3
6. Fetch styling guide: node scripts/get_styling_migration_guide.mjs
7. Apply styling updates

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Preview Mode

This skill targets the staging deployment of the docs/migration branch. Once docs are merged to main and live on heroui.com, set HEROUI_MIGRATION_DOCS_BASE=https://heroui.com/docs/react/migration or update the default in scripts.