COUNTCOUNT
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CustomersUpdate a customer contact

Update a customer contact

PUT/partners/customers/{uuid}/contacts/{contactUuid}

Updates one contact on a customer.

A partial update — send only the fields you want to change, but send at least one. The same field allowlist as Add a customer contact applies.

HMAC signature + Bearer access token
Try this request
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Path parameters

uuiduuidrequired

The customer UUID.

contactUuiduuidrequired

The contact UUID, as returned under `id` on a contact.

Request body

firstNamestring

Contact's first name. Must be a non-empty string if sent.

lastNamestring

Contact's last name.

emailstring

Contact's email address.

phonestring

Contact's phone number.

isPrimaryboolean

Marks this contact as the primary one.

Responses

200The updated contact, returned under `updatedContact`.
400Empty body, or a field has the wrong type.
404Customer or contact not found.
401Missing or invalid HMAC signature, expired timestamp, or invalid Bearer token. Troubleshoot
403The credential does not have access to this workspace or resource. Troubleshoot
429Rate limit exceeded (100 requests per minute per clientId). Retry after the Retry-After header. Troubleshoot
PUThttps://api.getcount.com/partners/customers/{uuid}/contacts/{contactUuid}
Request
import crypto from 'node:crypto';

const BASE_URL = 'https://api.getcount.com';
const CLIENT_ID = process.env.COUNT_CLIENT_ID;
const CLIENT_SECRET = process.env.COUNT_CLIENT_SECRET;
const ACCESS_TOKEN = process.env.COUNT_ACCESS_TOKEN;

const method = 'PUT';
const signingPath = '/customers/3fa85f64-5717-4562-b3fc-2c963f66afa6/contacts/3fa85f64-5717-4562-b3fc-2c963f66afa6';
const timestamp = Math.floor(Date.now() / 1000).toString();
const body = {
  "email": "john.doe@acme.com",
  "isPrimary": true
};
const bodyString = JSON.stringify(body);

const bodyHash = crypto.createHash('sha256').update(bodyString).digest('hex');
const baseString = `${method}:${signingPath}:${timestamp}:${bodyHash}`;
const signature = crypto.createHmac('sha256', CLIENT_SECRET).update(baseString).digest('hex');

const response = await fetch(`${BASE_URL}/partners/customers/3fa85f64-5717-4562-b3fc-2c963f66afa6/contacts/3fa85f64-5717-4562-b3fc-2c963f66afa6`, {
  method,
  headers: {
    'x-client-id': CLIENT_ID,
    'x-timestamp': timestamp,
    'x-signature': signature,
    'Content-Type': 'application/json',
    Authorization: `Bearer ${ACCESS_TOKEN}`,
  },
  body: bodyString,
});

console.log(await response.json());
Response · 200
{
  "status": "success",
  "message": "Success on updating contact John",
  "data": {
    "updatedContact": {
      "id": "a5da3577-bf85-4e3a-aa73-df85ca69bc67",
      "firstName": "John",
      "lastName": "Doe",
      "email": "john.doe@acme.com",
      "phone": "+1234567890",
      "isPrimary": true,
      "createdAt": "2026-01-15T10:30:00.000Z",
      "updatedAt": "2026-01-28T14:22:30.000Z"
    }
  }
}