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ai-sdk-5

Migrate React chat features to AI SDK v5 with DefaultChatTransport and UIMessage parts.

1|Updated Jan 18, 2026
Search Tags:#react#streaming#vercel#chat#migrate#ai-sdk#transport
One-click install
npx skills add https://github.com/valec3/AGENTS.md --skill ai-sdk-5-valec3
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: ai-sdk-5
Source: https://github.com/valec3/AGENTS.md/tree/main/REFERENCES/GentlemanProgramming/skill/ai-sdk-5
Command: npx skills add https://github.com/valec3/AGENTS.md --skill ai-sdk-5-valec3

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps developers migrate and adapt chat features to Vercel AI SDK v5, addressing breaking changes from v4 and aligning code with new imports, transports, and UI message structures.

Core Features & Use Cases

  • Migration guidance for AI SDK v5 usage in React UIs and server routes.
  • Updated import paths, transport setup, and the UIMessage parts architecture demonstrated with examples.
  • Use Case: Refactor an existing AI chat feature to leverage v5 transports, streaming responses, and tool integrations.

Quick Start

Start by updating your chat component to import from @ai-sdk/react, configure DefaultChatTransport with your API, and adapt UI messages to the parts structure to enable streaming.

Frequently Asked Questions about ai-sdk-5

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I migrate my React chat app to AI SDK v5?▼

To migrate your React chat app to AI SDK v5, update your imports to pull from @ai-sdk/react, replace previous chat configurations with DefaultChatTransport, and adapt UI messages to the new parts data structure to enable streaming.

What is DefaultChatTransport in Vercel AI SDK v5?▼

DefaultChatTransport in Vercel AI SDK v5 is the new mechanism for configuring chat API connections. It replaces previous v4 configurations to enable streaming responses and tool integrations within your React UI and backend routes.

How does the UIMessage parts data structure work in AI SDK v5?▼

The UIMessage parts data structure in AI SDK v5 organizes chat messages into discrete parts for rendering streaming responses and tool integrations. It requires adapting existing UI components to map over these parts instead of rendering plain text strings.

Can I use AI SDK v5 streaming and tool integrations with my existing backend routes?▼

Yes, AI SDK v5 streaming and tool integrations work with existing backend routes. You must update your server-side code to align with v5 breaking changes, ensuring proper transport setup and UIMessage parts architecture are implemented correctly.

Why does my chat streaming break after updating to Vercel AI SDK v5?▼

Chat streaming breaks after updating to Vercel AI SDK v5 due to breaking changes from v4. Fix this by updating imports from @ai-sdk/react, configuring DefaultChatTransport, and migrating UI messages to the parts data structure.

Do I need to update imports to @ai-sdk/react for AI SDK v5?▼

Yes, you need to update imports to @ai-sdk/react for AI SDK v5. This is a required breaking change from v4 that ensures your React chat components can access the new transports and UIMessage parts architecture correctly.

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