curl --request POST \
  --url https://api.everhour.com/expenses \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --data '
{
  "category": 236046,
  "date": "2019-04-04",
  "amount": 2278,
  "attachments": [
    123
  ],
  "billable": true,
  "details": "Transportation notes",
  "project": "as:333045610521453",
  "quantity": 17,
  "user": 6
}
'

import requests

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

payload = {
    "category": 236046,
    "date": "2019-04-04",
    "amount": 2278,
    "attachments": [123],
    "billable": True,
    "details": "Transportation notes",
    "project": "as:333045610521453",
    "quantity": 17,
    "user": 6
}
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({
    category: 236046,
    date: '2019-04-04',
    amount: 2278,
    attachments: [123],
    billable: true,
    details: 'Transportation notes',
    project: 'as:333045610521453',
    quantity: 17,
    user: 6
  })
};

fetch('https://api.everhour.com/expenses', 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/expenses",
  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([
    'category' => 236046,
    'date' => '2019-04-04',
    'amount' => 2278,
    'attachments' => [
        123
    ],
    'billable' => true,
    'details' => 'Transportation notes',
    'project' => 'as:333045610521453',
    'quantity' => 17,
    'user' => 6
  ]),
  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/expenses"

	payload := strings.NewReader("{\n  \"category\": 236046,\n  \"date\": \"2019-04-04\",\n  \"amount\": 2278,\n  \"attachments\": [\n    123\n  ],\n  \"billable\": true,\n  \"details\": \"Transportation notes\",\n  \"project\": \"as:333045610521453\",\n  \"quantity\": 17,\n  \"user\": 6\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/expenses")
  .header("X-Api-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"category\": 236046,\n  \"date\": \"2019-04-04\",\n  \"amount\": 2278,\n  \"attachments\": [\n    123\n  ],\n  \"billable\": true,\n  \"details\": \"Transportation notes\",\n  \"project\": \"as:333045610521453\",\n  \"quantity\": 17,\n  \"user\": 6\n}")
  .asString();

require 'uri'
require 'net/http'

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

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  \"category\": 236046,\n  \"date\": \"2019-04-04\",\n  \"amount\": 2278,\n  \"attachments\": [\n    123\n  ],\n  \"billable\": true,\n  \"details\": \"Transportation notes\",\n  \"project\": \"as:333045610521453\",\n  \"quantity\": 17,\n  \"user\": 6\n}"

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

{
  "amount": 2278,
  "attachments": [
    {
      "id": 514,
      "name": "avatar.jpg",
      "token": "9a04b8a1fb99cbfadf3386ad6a338c14"
    }
  ],
  "billable": true,
  "category": 236046,
  "date": "2019-04-04",
  "details": "Transportation notes",
  "id": 234718,
  "project": "as:333045610521453",
  "quantity": 17,
  "user": 6
}