curl --request POST \
  --url https://api.everhour.com/allocations \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --data '
{
  "startDate": "2019-01-01",
  "endDate": "2019-12-31",
  "contractStartDate": "2019-03-01",
  "users": [
    79786,
    79787
  ],
  "timeOffType": 16539,
  "days": 24,
  "daysCarried": 24,
  "accrualFrequency": "daily",
  "restrictOverAllocation": false,
  "completed": false,
  "notes": "some notes"
}
'

import requests

url = "https://api.everhour.com/allocations"

payload = {
    "startDate": "2019-01-01",
    "endDate": "2019-12-31",
    "contractStartDate": "2019-03-01",
    "users": [79786, 79787],
    "timeOffType": 16539,
    "days": 24,
    "daysCarried": 24,
    "accrualFrequency": "daily",
    "restrictOverAllocation": False,
    "completed": False,
    "notes": "some notes"
}
headers = {
    "X-Api-Key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'X-Api-Key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    startDate: '2019-01-01',
    endDate: '2019-12-31',
    contractStartDate: '2019-03-01',
    users: [79786, 79787],
    timeOffType: 16539,
    days: 24,
    daysCarried: 24,
    accrualFrequency: 'daily',
    restrictOverAllocation: false,
    completed: false,
    notes: 'some notes'
  })
};

fetch('https://api.everhour.com/allocations', 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.everhour.com/allocations",
  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([
    'startDate' => '2019-01-01',
    'endDate' => '2019-12-31',
    'contractStartDate' => '2019-03-01',
    'users' => [
        79786,
        79787
    ],
    'timeOffType' => 16539,
    'days' => 24,
    'daysCarried' => 24,
    'accrualFrequency' => 'daily',
    'restrictOverAllocation' => false,
    'completed' => false,
    'notes' => 'some notes'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-Api-Key: <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"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.everhour.com/allocations"

	payload := strings.NewReader("{\n  \"startDate\": \"2019-01-01\",\n  \"endDate\": \"2019-12-31\",\n  \"contractStartDate\": \"2019-03-01\",\n  \"users\": [\n    79786,\n    79787\n  ],\n  \"timeOffType\": 16539,\n  \"days\": 24,\n  \"daysCarried\": 24,\n  \"accrualFrequency\": \"daily\",\n  \"restrictOverAllocation\": false,\n  \"completed\": false,\n  \"notes\": \"some notes\"\n}")

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

	req.Header.Add("X-Api-Key", "<api-key>")
	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))

}

HttpResponse<String> response = Unirest.post("https://api.everhour.com/allocations")
  .header("X-Api-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"startDate\": \"2019-01-01\",\n  \"endDate\": \"2019-12-31\",\n  \"contractStartDate\": \"2019-03-01\",\n  \"users\": [\n    79786,\n    79787\n  ],\n  \"timeOffType\": 16539,\n  \"days\": 24,\n  \"daysCarried\": 24,\n  \"accrualFrequency\": \"daily\",\n  \"restrictOverAllocation\": false,\n  \"completed\": false,\n  \"notes\": \"some notes\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.everhour.com/allocations")

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

request = Net::HTTP::Post.new(url)
request["X-Api-Key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"startDate\": \"2019-01-01\",\n  \"endDate\": \"2019-12-31\",\n  \"contractStartDate\": \"2019-03-01\",\n  \"users\": [\n    79786,\n    79787\n  ],\n  \"timeOffType\": 16539,\n  \"days\": 24,\n  \"daysCarried\": 24,\n  \"accrualFrequency\": \"daily\",\n  \"restrictOverAllocation\": false,\n  \"completed\": false,\n  \"notes\": \"some notes\"\n}"

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

{
  "id": 876534,
  "startDate": "2019-01-01",
  "endDate": "2019-12-31",
  "contractStartDate": "2019-03-01",
  "user": 79786,
  "timeOffType": 16539,
  "days": 24,
  "daysCarried": 24,
  "daysAllocated": 6.2,
  "daysUsed": 8,
  "accrualFrequency": "daily",
  "restrictOverAllocation": false,
  "completed": false,
  "notes": "some notes",
  "createdBy": 79562,
  "createdAt": "2018-06-01"
}