curl --request POST \
  --url https://api.fastcac.com/v1/test_helpers/businesses/monitors/{monitor_id}/changes \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "status": "INACTIVE"
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({status: 'INACTIVE'})
};

fetch('https://api.fastcac.com/v1/test_helpers/businesses/monitors/{monitor_id}/changes', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.fastcac.com/v1/test_helpers/businesses/monitors/{monitor_id}/changes"

payload = { "status": "INACTIVE" }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.fastcac.com/v1/test_helpers/businesses/monitors/{monitor_id}/changes"

	payload := strings.NewReader("{\n  \"status\": \"INACTIVE\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.fastcac.com/v1/test_helpers/businesses/monitors/{monitor_id}/changes",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'status' => 'INACTIVE'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

{
  "object": "business_monitor",
  "id": "mon_5Rfxqm9UQ4xlFxXoJeFCaT",
  "number": "7654321",
  "type": "RC",
  "type_label": "Company",
  "name": "ADA FOODS LIMITED",
  "status": "INACTIVE",
  "active": false,
  "external_id": "merchant-4471",
  "state": "active",
  "paid_through": "2026-11-27T15:16:04Z",
  "last_checked_at": null,
  "last_changed_at": "2026-10-28T15:16:05Z",
  "amount_charged": null,
  "created_at": "2026-10-28T15:16:04Z"
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "request_id": "<string>",
    "details": {}
  }
}

{
  "error": {
    "type": "authentication_error",
    "code": "api_key_missing",
    "message": "Send your API key as `Authorization: Bearer <key>`.",
    "param": null,
    "request_id": "req_8r9FEwNmLuxQORZX5Qhvkd0q"
  }
}

{
  "error": {
    "type": "permission_error",
    "code": "test_mode_only",
    "message": "The test helper only works with a test key.",
    "param": null,
    "request_id": "req_gX65JwIgM2XO4SGn00mDcVUk"
  }
}

{
  "error": {
    "type": "not_found_error",
    "code": "resource_missing",
    "message": "No such registration: reg_0000000000000000000000.",
    "param": "id",
    "request_id": "req_PLJYvLLT2WjhIywrPjlhgIGv"
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "request_id": "<string>",
    "details": {}
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "<string>",
    "message": "<string>",
    "param": "<string>",
    "request_id": "<string>",
    "details": {}
  }
}