import { buildClient } from '@datocms/cma-client-node';
async function run() {
  const client = buildClient({ apiToken: '<YOUR_API_TOKEN>' });
  
  const result = await client.uploads.bulkTag({
    tags: [
      'cats'
    ],
    uploads: [
      {
        type: 'upload',
        id: '666'
      }
    ]
  });
  
  console.log(result);
}
run();

[]