Get customers

Download customers using GET.

Request

For every API request you make, you'll need to present the API access key in the HTTP Header as X-API-Key to be authenticated.

Parameters

Name	Required	Value	Description
limit	optional	number	Amount of results (default: 75) (maximum: 250)
page	optional	number	Page to show (default: 1)
since_id	optional	number	Restrict results to after the specified ID.
created_at_min	optional	string	Show items created after date (format: yyyy-mm-dd OR yyyy-mm-dd hh:mm:ss)
created_at_max	optional	string	Show items created before date (format: yyyy-mm-dd OR yyyy-mm-dd hh:mm:ss)
updated_at_min	optional	string	Show items last updated after date (format: yyyy-mm-dd OR yyyy-mm-dd hh:mm:ss)
updated_at_max	optional	string	Show items last updated before date (format: yyyy-mm-dd OR yyyy-mm-dd hh:mm:ss)
include[]	optional	string: employees	Automatically added for customer type 'Private'

Example code in PHP

$request_url = 'https://api.frontcore.com/v2/customers';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $request_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 

curl_setopt($ch, CURLOPT_HTTPHEADER, array(
  'X-API-Key: {your-api-key}',
  'Accept: application/json',
));
$result = curl_exec($ch);
curl_close($ch);
               

Response

If the method is successful it responds with an JSON structure, as it is shown below.

[
    {
        "id": 64925,
        "title": "1",
        "department": "2",
        "phone": "5",
        "fax": "7",
        "email": "4",
        "webaddress": "8",
        "orgnr": "6",
        "invoice_email": "23",
        "customer_reference_id": "9",
        "customer_reference": null,
        "note": "29",
        "idStatus": "2",
        "turnover": null,
        "idParentCustomer": null,
        "invoice_method": "electronic",
        "country": {
            "id": 203,
            "title": "Sverige",
            "code": "SE"
        },
        "status": "Deactivated",
        "type": "Private",
        "employees": [],
        "duedate_days": 0,
        "seller": null,
        "invoice_address": {
            "address": null,
            "address_2": "17",
            "address_3": "18",
            "zipcode": "19",
            "city": "20"
        },
        "post_address": {
            "address": "11",
            "address_2": "12",
            "address_3": "13",
            "zipcode": "14",
            "city": "15"
        },
        "visit_address": {
            "address": "24",
            "address_2": "25",
            "address_3": "26",
            "zipcode": "27",
            "city": "28"
        },
        "custom_properties": null,
        "created_at": "2019-10-24T14:41:26+02:00",
        "updated_at": "2026-04-09T08:24:46+02:00"
    },
    {
        "id": 64926,
        "title": "1",
        "department": "2",
        "phone": "5",
        "fax": "7",
        "email": "4",
        "webaddress": "8",
        "orgnr": "6",
        "invoice_email": "23",
        "customer_reference_id": "9",
        "customer_reference": "21",
        "note": "29",
        "idStatus": "2",
        "turnover": null,
        "idParentCustomer": null,
        "invoice_method": "electronic",
        "country": {
            "id": 203,
            "title": "Sverige",
            "code": "SE"
        },
        "status": "Deactivated",
        "type": "Private",
        "employees": [],
        "duedate_days": 22,
        "seller": null,
        "invoice_address": {
            "address": "16",
            "address_2": "17",
            "address_3": "18",
            "zipcode": "19",
            "city": "20"
        },
        "post_address": {
            "address": "11",
            "address_2": "12",
            "address_3": "13",
            "zipcode": "14",
            "city": "15"
        },
        "visit_address": {
            "address": "24",
            "address_2": "25",
            "address_3": "26",
            "zipcode": "27",
            "city": "28"
        },
        "custom_properties": null,
        "created_at": "2019-10-24T14:44:28+02:00",
        "updated_at": "2026-04-09T08:24:46+02:00"
    },
    {
        "id": 32714,
        "title": "Beste Kunde AS",
        "department": null,
        "phone": null,
        "fax": null,
        "email": null,
        "webaddress": null,
        "orgnr": "85454545",
        "invoice_email": null,
        "customer_reference_id": null,
        "customer_reference": "Per Pedersen",
        "note": null,
        "idStatus": "1",
        "turnover": null,
        "idParentCustomer": null,
        "invoice_method": "electronic",
        "country": {
            "id": 159,
            "title": "Norge",
            "code": "NO"
        },
        "status": "Active",
        "type": "Company",
        "duedate_days": 10,
        "seller": null,
        "invoice_address": {
            "address": "Kundeveien 10",
            "address_2": null,
            "address_3": null,
            "zipcode": "2130",
            "city": "Oslo"
        },
        "post_address": {
            "address": null,
            "address_2": null,
            "address_3": null,
            "zipcode": null,
            "city": null
        },
        "visit_address": {
            "address": null,
            "address_2": null,
            "address_3": null,
            "zipcode": null,
            "city": null
        },
        "custom_properties": null,
        "created_at": "2017-03-31T20:27:41+02:00",
        "updated_at": "2026-04-12T05:50:05+02:00"
    }
]

Unsuccessful response sample:

{
    "error": "Wrong API Key"
}