Update a customer

import { createAdminClient } from '@spree/admin-sdk'

const client = createAdminClient({
  baseUrl: 'https://your-store.com',
  secretKey: 'sk_xxx',
})

const customer = await client.customers.update('cus_UkLWZg9DAJ', {
  first_name: 'Updated',
  tags: ['wholesale', 'vip'],
})

spree api patch /customers/{id} -d '{"first_name":"Updated","tags":["wholesale","vip"]}'

{
  "id": "cus_UkLWZg9DAJ",
  "email": "jane@example.com",
  "first_name": "Updated",
  "last_name": "Doe",
  "phone": null,
  "accepts_email_marketing": false,
  "full_name": "Updated Doe",
  "available_store_credit_total": "0",
  "display_available_store_credit_total": "$0.00",
  "login": "jane@example.com",
  "metadata": {},
  "last_sign_in_at": null,
  "current_sign_in_at": null,
  "created_at": "2026-07-24T18:10:52.362Z",
  "updated_at": "2026-07-24T18:10:52.666Z",
  "sign_in_count": 0,
  "failed_attempts": 0,
  "last_sign_in_ip": null,
  "current_sign_in_ip": null,
  "tags": [],
  "internal_note_html": null,
  "default_billing_address_id": null,
  "default_shipping_address_id": null,
  "orders_count": 0,
  "total_spent": "0.0",
  "display_total_spent": "$0.00",
  "last_order_completed_at": null,
  "customer_group_ids": []
}