Dynamic API Routes in Next.js

API routes support dynamic routes, and follow the same file naming rules used for pages.

For example, the API route pages/api/post/[pid].js has the following code:

export default function handler(req, res) {
  const { pid } = req.query
  res.end(`Post: ${pid}`)
}

Now, a request to /api/post/abc will respond with the text: Post: abc.