Add up the organisations you can see

curl --request GET \
  --url https://api.sandbox.flowpayroll.ai/v1/administration/organisations/summary \
  --header 'X-Auth-Token: <api-key>'

import requests

url = "https://api.sandbox.flowpayroll.ai/v1/administration/organisations/summary"

headers = {"X-Auth-Token": "<api-key>"}

response = requests.get(url, headers=headers)

print(response.text)

const options = {method: 'GET', headers: {'X-Auth-Token': '<api-key>'}};

fetch('https://api.sandbox.flowpayroll.ai/v1/administration/organisations/summary', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.sandbox.flowpayroll.ai/v1/administration/organisations/summary",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "X-Auth-Token: <api-key>"
  ],
]);

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

curl_close($curl);

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

package main

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

func main() {

	url := "https://api.sandbox.flowpayroll.ai/v1/administration/organisations/summary"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("X-Auth-Token", "<api-key>")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.sandbox.flowpayroll.ai/v1/administration/organisations/summary")
  .header("X-Auth-Token", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.sandbox.flowpayroll.ai/v1/administration/organisations/summary")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["X-Auth-Token"] = '<api-key>'

response = http.request(request)
puts response.read_body

{
  "message": {
    "text": "<string>",
    "token": "<string>",
    "tokenArguments": [
      {
        "name": "<string>",
        "value": "<unknown>"
      }
    ]
  },
  "content": {
    "data": {
      "organisationCount": 123,
      "employees": {
        "totalEmployeeCount": 123,
        "activeEmployeeCount": 123,
        "leaverEmployeeCount": 123
      },
      "payroll": {
        "from": "<string>",
        "to": "<string>",
        "organisationsPaid": 123,
        "payslips": 123,
        "employeesPaid": 123,
        "gross": 123,
        "net": 123,
        "employerCost": 123
      },
      "largestOrganisations": [
        {
          "organisationId": "<string>",
          "name": "<string>",
          "activeEmployeeCount": 123
        }
      ]
    },
    "metadata": {
      "dateFormat": "<string>",
      "dateTimeFormat": "<string>",
      "paginationToken": "<string>"
    }
  },
  "validationIssues": [
    {
      "field": "<string>",
      "reason": "<string>",
      "reasonToken": "<string>",
      "reasonTokenArguments": [
        {
          "name": "<string>",
          "value": "<unknown>"
        }
      ]
    }
  ]
}

{
  "message": {
    "text": "<string>",
    "token": "<string>",
    "tokenArguments": [
      {
        "name": "<string>",
        "value": "<unknown>"
      }
    ]
  },
  "content": {
    "data": "<unknown>",
    "metadata": {
      "dateFormat": "<string>",
      "dateTimeFormat": "<string>",
      "paginationToken": "<string>"
    }
  },
  "validationIssues": [
    {
      "field": "<string>",
      "reason": "<string>",
      "reasonToken": "<string>",
      "reasonTokenArguments": [
        {
          "name": "<string>",
          "value": "<unknown>"
        }
      ]
    }
  ]
}

{
  "message": {
    "text": "<string>",
    "token": "<string>",
    "tokenArguments": [
      {
        "name": "<string>",
        "value": "<unknown>"
      }
    ]
  },
  "content": {
    "data": "<unknown>",
    "metadata": {
      "dateFormat": "<string>",
      "dateTimeFormat": "<string>",
      "paginationToken": "<string>"
    }
  },
  "validationIssues": [
    {
      "field": "<string>",
      "reason": "<string>",
      "reasonToken": "<string>",
      "reasonTokenArguments": [
        {
          "name": "<string>",
          "value": "<unknown>"
        }
      ]
    }
  ]
}

{
  "message": {
    "text": "<string>",
    "token": "<string>",
    "tokenArguments": [
      {
        "name": "<string>",
        "value": "<unknown>"
      }
    ]
  },
  "content": {
    "data": "<unknown>",
    "metadata": {
      "dateFormat": "<string>",
      "dateTimeFormat": "<string>",
      "paginationToken": "<string>"
    }
  },
  "validationIssues": [
    {
      "field": "<string>",
      "reason": "<string>",
      "reasonToken": "<string>",
      "reasonTokenArguments": [
        {
          "name": "<string>",
          "value": "<unknown>"
        }
      ]
    }
  ]
}

{
  "message": {
    "text": "<string>",
    "token": "<string>",
    "tokenArguments": [
      {
        "name": "<string>",
        "value": "<unknown>"
      }
    ]
  },
  "content": {
    "data": "<unknown>",
    "metadata": {
      "dateFormat": "<string>",
      "dateTimeFormat": "<string>",
      "paginationToken": "<string>"
    }
  },
  "validationIssues": [
    {
      "field": "<string>",
      "reason": "<string>",
      "reasonToken": "<string>",
      "reasonTokenArguments": [
        {
          "name": "<string>",
          "value": "<unknown>"
        }
      ]
    }
  ]
}