AG-UI Protocol

This skill builds on ai-core. Read it first for critical rules.

Setup — Server Endpoint Producing AG-UI Events via SSE

import { chat, toServerSentEventsResponse } from '@tanstack/ai'
import { openaiText } from '@tanstack/ai-openai'

export async function POST(request: Request) {
  const { messages } = await request.json()
  const stream = chat({
    adapter: openaiText('gpt-5.6'),
    messages,
  })
  return toServerSentEventsResponse(stream)
}