const { result, error } = await unprice.customers.reportUsage({
  customerId: "cus_1234567890",
  featureSlug: "tokens",
  usage: 30,
  idempotenceKey: "123e4567-e89b-12d3-a456-426614174000",
  metadata: {
    action: "create",
    country: "US"
  }
});

if (error) {
  // handle potential network or bad request error
  // a link to our docs will be in the `error.docs` field
  console.error(error.message);
  return;
}

console.log(result);

{
  "success": true,
  "message": "Usage reported successfully",
  "cacheHit": false,
  "remaining": 970
}