curl --request POST \
  --url https://api.sonderplan.com/v2/project/phase \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "Deliverables due to client",
  "project_id": 2776,
  "type_id": 2,
  "start": 1669802192,
  "end": 1670234192,
  "color_background": "#B0A7F1",
  "color_text": "#000000"
}
'

import requests

url = "https://api.sonderplan.com/v2/project/phase"

payload = {
    "name": "Deliverables due to client",
    "project_id": 2776,
    "type_id": 2,
    "start": 1669802192,
    "end": 1670234192,
    "color_background": "#B0A7F1",
    "color_text": "#000000"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    name: 'Deliverables due to client',
    project_id: 2776,
    type_id: 2,
    start: 1669802192,
    end: 1670234192,
    color_background: '#B0A7F1',
    color_text: '#000000'
  })
};

fetch('https://api.sonderplan.com/v2/project/phase', 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.sonderplan.com/v2/project/phase",
  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([
    'name' => 'Deliverables due to client',
    'project_id' => 2776,
    'type_id' => 2,
    'start' => 1669802192,
    'end' => 1670234192,
    'color_background' => '#B0A7F1',
    'color_text' => '#000000'
  ]),
  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;
}

package main

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

func main() {

	url := "https://api.sonderplan.com/v2/project/phase"

	payload := strings.NewReader("{\n  \"name\": \"Deliverables due to client\",\n  \"project_id\": 2776,\n  \"type_id\": 2,\n  \"start\": 1669802192,\n  \"end\": 1670234192,\n  \"color_background\": \"#B0A7F1\",\n  \"color_text\": \"#000000\"\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))

}

HttpResponse<String> response = Unirest.post("https://api.sonderplan.com/v2/project/phase")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"name\": \"Deliverables due to client\",\n  \"project_id\": 2776,\n  \"type_id\": 2,\n  \"start\": 1669802192,\n  \"end\": 1670234192,\n  \"color_background\": \"#B0A7F1\",\n  \"color_text\": \"#000000\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.sonderplan.com/v2/project/phase")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"name\": \"Deliverables due to client\",\n  \"project_id\": 2776,\n  \"type_id\": 2,\n  \"start\": 1669802192,\n  \"end\": 1670234192,\n  \"color_background\": \"#B0A7F1\",\n  \"color_text\": \"#000000\"\n}"

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

{
  "success": {
    "id": 1
  }
}

{
  "error": {
    "code": "404",
    "message": "Requested resource was not found"
  }
}