pages/api/nodes.js

export default function handler(req, res) {
  if (req.method === 'GET') {
    res.status(200).json({ message: 'Nodes API endpoint' })
  } else if (req.method === 'POST') {
    const { name, type, model, apiKey, brief } = req.body
    res.status(201).json({ 
      id: `node-${Date.now()}`,
      name, 
      type, 
      model, 
      apiKey, 
      brief 
    })
  } else {
    res.status(405).json({ message: 'Method not allowed' })
  }
}