import { checkRateLimit } from '@vercel/firewall';

export async function POST() {
  const { rateLimited } = await checkRateLimit('my-rate-limit-id');
  if (rateLimited) {
    return new Response('', {
      status: 429,
    });
  }
  // Implement logic guarded by rate limit
}

<h3 align="center">Vercel</h3>