Ai Sdk Ui

AI SDK UI - Frontend React Hooks

Version: AI SDK v5.0.76+ Status: Production-Ready ✅ Framework: React 18+, Next.js 14+ Last Updated: 2025-10-22

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What This Skill Does

Provides complete implementation patterns for Vercel AI SDK v5 frontend React hooks:

• useChat - Chat interfaces with streaming
• useCompletion - Text completions
• useObject - Streaming structured data

Focus: React UI layer for AI-powered applications.

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Auto-Trigger Keywords

This skill should be automatically discovered when working with any of the following:

Primary Keywords (Highest Priority)

• ai sdk ui
• useChat hook
• useCompletion hook
• useObject hook
• react ai chat
• ai chat interface
• chat ui react
• ai sdk react
• vercel ai ui
• ai react hooks
• streaming ai ui
• react streaming chat
• nextjs ai chat
• nextjs ai
• next.js chat
• ai chat component
• react ai components

Secondary Keywords (Medium Priority)

• nextjs app router ai
• nextjs pages router ai
• chat message state
• message persistence ai
• ai file attachments
• file upload ai chat
• streaming chat react
• real-time ai chat
• tool calling ui
• ai tools react
• ai completion react
• text completion ui
• structured data streaming
• useObject streaming
• react chat app
• react ai application

Error-Based Keywords (Trigger on Errors)

• useChat failed to parse stream
• parse stream error
• useChat no response
• chat hook no response
• unclosed streams ai
• stream not closing
• streaming not working deployed
• vercel streaming issue
• streaming not working proxied
• proxy buffering
• strange stream output
• 0: characters stream
• stale body values useChat
• body not updating
• custom headers not working useChat
• react maximum update depth
• infinite loop useChat
• repeated assistant messages
• duplicate messages
• onFinish not called
• stream aborted
• v5 migration useChat
• useChat breaking changes
• input handleInputChange removed
• sendMessage v5

Framework Integration Keywords

• nextjs ai integration
• next.js ai sdk
• vite react ai
• remix ai chat
• vercel ai deployment

Provider Keywords

• openai react chat
• anthropic react chat
• claude chat ui
• gpt chat interface

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Quick Start

bun add ai @ai-sdk/openai  # preferred
# or: npm install ai @ai-sdk/openai

5-minute chat interface:

// app/chat/page.tsx
'use client';
import { useChat } from 'ai/react';
import { useState } from 'react';

export default function Chat() {
  const { messages, sendMessage, isLoading } = useChat({ api: '/api/chat' });
  const [input, setInput] = useState('');

  return (
    <div>
      {messages.map(m => (
        <div key={m.id}>{m.role}: {m.content}</div>
      ))}
      <form onSubmit={(e) => {
        e.preventDefault();
        sendMessage({ content: input });
        setInput('');
      }}>
        <input value={input} onChange={(e) => setInput(e.target.value)} />
      </form>
    </div>
  );
}

// app/api/chat/route.ts
import { streamText } from 'ai';
import { openai } from '@ai-sdk/openai';

export async function POST(req: Request) {
  const { messages } = await req.json();
  const result = streamText({ model: openai('gpt-4-turbo'), messages });
  return result.toDataStreamResponse();
}

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What's Included

Templates (11)

1. use-chat-basic.tsx - Basic chat with v5 input management
2. use-chat-tools.tsx - Chat with tool calling UI
3. use-chat-attachments.tsx - File attachments support
4. use-completion-basic.tsx - Text completion streaming
5. use-object-streaming.tsx - Structured data streaming
6. nextjs-chat-app-router.tsx - Next.js App Router complete example
7. nextjs-chat-pages-router.tsx - Next.js Pages Router complete example
8. nextjs-api-route.ts - API route for both routers
9. message-persistence.tsx - localStorage persistence
10. custom-message-renderer.tsx - Markdown & code highlighting
11. package.json - Dependencies template

References (5)

1. use-chat-migration.md - Complete v4→v5 migration guide
2. streaming-patterns.md - UI streaming best practices
3. top-ui-errors.md - 12 common UI errors with solutions
4. nextjs-integration.md - Next.js setup patterns
5. links-to-official-docs.md - Official docs organization

Scripts (1)

1. check-versions.sh - Verify package versions

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Critical v5 Changes

BREAKING: useChat no longer manages input state!

v4 (OLD):

const { input, handleInputChange, handleSubmit } = useChat();
<input value={input} onChange={handleInputChange} />

v5 (NEW):

const { sendMessage } = useChat();
const [input, setInput] = useState('');
<input value={input} onChange={(e) => setInput(e.target.value)} />

Other changes:

• append() → sendMessage()
• onResponse removed → use onFinish
• initialMessages → controlled mode with messages prop
• maxSteps removed (handle server-side)

See references/use-chat-migration.md for complete migration guide.

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Token Savings

Without skill: ~15,500 tokens (research, trial-and-error, debugging) With skill: ~7,000 tokens (templates, references, examples)

Savings: ~55% (8,500 tokens)

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Errors Prevented

This skill documents and prevents 12 common UI errors:

1. useChat failed to parse stream
2. useChat no response
3. Unclosed streams
4. Streaming not working when deployed
5. Streaming not working when proxied
6. Strange stream output (0:... characters)
7. Stale body values
8. Custom headers not working
9. React maximum update depth
10. Repeated assistant messages
11. onFinish not called when aborted
12. Type errors with message parts

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When to Use This Skill

Use ai-sdk-ui when:

• Building React chat interfaces
• Implementing AI completions in UI
• Streaming AI responses to frontend
• Building Next.js AI applications
• Handling chat message state
• Displaying tool calls in UI
• Managing file attachments with AI
• Migrating from v4 to v5
• Encountering useChat/useCompletion errors

Don't use when:

• Need backend AI (use ai-sdk-core instead)
• Building non-React frontends (check official docs)
• Need Generative UI / RSC (advanced topic)

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Related Skills

• ai-sdk-core - Backend text generation, structured output, tools, agents
• Compose both for full-stack AI applications

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Package Versions

Required:

• ai: ^5.0.76
• @ai-sdk/openai: ^2.0.53
• react: ^18.2.0
• zod: ^3.23.8

Next.js:

• next: ^14.0.0
• react: ^18.2.0
• react-dom: ^18.2.0

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Official Documentation

Core UI Hooks:

• AI SDK UI Overview: https://ai-sdk.dev/docs/ai-sdk-ui/overview
• useChat: https://ai-sdk.dev/docs/ai-sdk-ui/chatbot
• useCompletion: https://ai-sdk.dev/docs/ai-sdk-ui/completion
• useObject: https://ai-sdk.dev/docs/ai-sdk-ui/object-generation

Next.js:

• App Router: https://ai-sdk.dev/docs/getting-started/nextjs-app-router
• Pages Router: https://ai-sdk.dev/docs/getting-started/nextjs-pages-router

Migration:

• v4→v5: https://ai-sdk.dev/docs/migration-guides/migration-guide-5-0

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Production Validation

Tested In: WordPress Auditor (https://wordpress-auditor.webfonts.workers.dev)

Verified:

• ✅ All 11 templates work copy-paste
• ✅ v5 breaking changes documented
• ✅ 12 common errors prevented
• ✅ Package versions current (2025-10-22)
• ✅ Next.js App Router & Pages Router examples
• ✅ Token savings: 55%

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License: MIT