Integrate Vercel AI SDK with streaming chat interface

[Copilot]

Adds interactive chat interface powered by Vercel AI SDK to demonstrate SecondOrder's meta-thinking capabilities in real-time.

Implementation

Chat API (app/api/chat/route.ts)

• Edge runtime endpoint with streaming via streamText and toUIMessageStreamResponse
• Input validation for messages array with proper error responses
• Custom system prompt focused on meta-cognition principles

Chat UI (components/chat/chat-interface.tsx)

• useChat hook with DefaultChatTransport (memoized to prevent re-instantiation)
• Message streaming with parts-based rendering
• Suggested prompts and status indicators

Landing Page Integration (app/page.tsx)

• New "Try it now" section with chat component
• Navigation link added to header

Dependencies

{
  "ai": "6.0.5",
  "@ai-sdk/openai": "1.1.3", 
  "@ai-sdk/react": "3.0.5"
}

Installed with --legacy-peer-deps due to React 19 peer dependency constraints in @ai-sdk/react@3.0.5.

Usage

// API route converts UI messages to model messages
const result = streamText({
  model: openai('gpt-4o-mini'),
  messages: await convertToModelMessages(messages),
});
return result.toUIMessageStreamResponse();

// Client uses memoized transport
const transport = useMemo(
  () => new DefaultChatTransport({ api: '/api/chat' }),
  []
);
const { messages, sendMessage, status } = useChat({ transport });

Configuration

Environment variable required:

OPENAI_API_KEY=sk-...

Documentation

• doc/vercel-ai-sdk-integration.md - Complete integration guide
• doc/INTEGRATION_SUMMARY.md - Architecture overview
• doc/QUICK_REFERENCE.md - Fast lookup guide
• Updated README with quick start

Security

• Input validation on API routes
• Type-safe throughout (TypeScript strict mode)
• CodeQL scan: 0 vulnerabilities
• Environment variables for secrets, no client exposure

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• fonts.googleapis.com
  • Triggering command: /usr/local/bin/node /usr/local/bin/node /home/REDACTED/work/secondorder-web/secondorder-web/node_modules/next/dist/compiled/jest-worker/processChild.js (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

Suggest how to integrate with Vercel AI SDK

---

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Project	Deployment	Review	Updated (UTC)
secondorder-web	Error		Jan 2, 2026 6:00am