COUNTCOUNT
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CustomersAdd a customer contact

Add a customer contact

POST/partners/customers/{uuid}/contacts

Adds a contact person to a customer.

Only `firstName` is required. Fields outside the list below are dropped before the contact is written, so an `id` in the body is ignored — the contact is addressed by its route parameter.

HMAC signature + Bearer access token
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Path parameters

uuiduuidrequired

The customer UUID.

Request body

firstNamestringrequired

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

lastNamestring

Contact's last name.

emailstring

Contact's email address.

phonestring

Contact's phone number.

isPrimaryboolean

Marks this contact as the primary one.

Responses

201Contact created.
400firstName missing, or a field has the wrong type (for example a numeric name or a string isPrimary).
404Customer 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
POSThttps://api.getcount.com/partners/customers/{uuid}/contacts
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 = 'POST';
const signingPath = '/customers/3fa85f64-5717-4562-b3fc-2c963f66afa6/contacts';
const timestamp = Math.floor(Date.now() / 1000).toString();
const body = {
  "firstName": "John",
  "lastName": "Doe",
  "email": "john@acme.com",
  "phone": "+1234567890",
  "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`, {
  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 · 201
{
  "status": "success",
  "message": "success on adding contact to your contacts",
  "data": {
    "contact": {
      "id": "a5da3577-bf85-4e3a-aa73-df85ca69bc67",
      "firstName": "John",
      "lastName": "Doe",
      "email": "john@acme.com",
      "phone": "+1234567890",
      "isPrimary": true,
      "createdAt": "2026-01-15T10:30:00.000Z",
      "updatedAt": "2026-01-28T14:22:30.000Z"
    }
  }
}