curl --request POST \
  --url https://{apiBaseUrl}/v2/session \
  --header 'Content-Type: application/json' \
  --data '
{
  "engineId": "2MIS",
  "guestSelectionMode": "Default",
  "display": {
    "culture": "fr-FR",
    "currency": "EUR",
    "countryCode": "FR"
  },
  "context": {
    "stayPeriod": {
      "arrivalDate": "2026-06-08T00:00:00Z",
      "departureDate": "2026-06-13T00:00:00Z"
    },
    "guests": [
      {
        "adults": 2,
        "children": 0,
        "infants": 0,
        "position": 1,
        "memberLevel": 0
      }
    ],
    "selectedHotelId": "10133",
    "selectedRoomCode": "29513",
    "highlightedRateCode": "32643",
    "promoCode": "DISCOUNT",
    "excludeMixedRates": false,
    "disableCrossSell": false,
    "isMobile": false
  },
  "metadata": {
    "customTrackingValues": {}
  }
}
'

const url = 'https://{apiBaseUrl}/v2/session';
const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    engineId: '2MIS',
    guestSelectionMode: 'Default',
    display: {culture: 'fr-FR', currency: 'EUR', countryCode: 'FR'},
    context: {
      stayPeriod: {arrivalDate: '2026-06-08T00:00:00Z', departureDate: '2026-06-13T00:00:00Z'},
      guests: [{adults: 2, children: 0, infants: 0, position: 1, memberLevel: 0}],
      selectedHotelId: '10133',
      selectedRoomCode: '29513',
      highlightedRateCode: '32643',
      promoCode: 'DISCOUNT',
      excludeMixedRates: false,
      disableCrossSell: false,
      isMobile: false
    },
    metadata: {customTrackingValues: {}}
  })
};

fetch(url, options)
  .then(res => res.json())
  .then(json => console.log(json))
  .catch(err => console.error(err));

import requests

url = "https://{apiBaseUrl}/v2/session"

payload = {
    "engineId": "2MIS",
    "guestSelectionMode": "Default",
    "display": {
        "culture": "fr-FR",
        "currency": "EUR",
        "countryCode": "FR"
    },
    "context": {
        "stayPeriod": {
            "arrivalDate": "2026-06-08T00:00:00Z",
            "departureDate": "2026-06-13T00:00:00Z"
        },
        "guests": [
            {
                "adults": 2,
                "children": 0,
                "infants": 0,
                "position": 1,
                "memberLevel": 0
            }
        ],
        "selectedHotelId": "10133",
        "selectedRoomCode": "29513",
        "highlightedRateCode": "32643",
        "promoCode": "DISCOUNT",
        "excludeMixedRates": False,
        "disableCrossSell": False,
        "isMobile": False
    },
    "metadata": { "customTrackingValues": {} }
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://{apiBaseUrl}/v2/session",
  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([
    'engineId' => '2MIS',
    'guestSelectionMode' => 'Default',
    'display' => [
        'culture' => 'fr-FR',
        'currency' => 'EUR',
        'countryCode' => 'FR'
    ],
    'context' => [
        'stayPeriod' => [
                'arrivalDate' => '2026-06-08T00:00:00Z',
                'departureDate' => '2026-06-13T00:00:00Z'
        ],
        'guests' => [
                [
                                'adults' => 2,
                                'children' => 0,
                                'infants' => 0,
                                'position' => 1,
                                'memberLevel' => 0
                ]
        ],
        'selectedHotelId' => '10133',
        'selectedRoomCode' => '29513',
        'highlightedRateCode' => '32643',
        'promoCode' => 'DISCOUNT',
        'excludeMixedRates' => false,
        'disableCrossSell' => false,
        'isMobile' => false
    ],
    'metadata' => [
        'customTrackingValues' => [
                
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

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

curl_close($curl);

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

using RestSharp;


var options = new RestClientOptions("https://{apiBaseUrl}/v2/session");
var client = new RestClient(options);
var request = new RestRequest("");
request.AddJsonBody("{\n  \"engineId\": \"2MIS\",\n  \"guestSelectionMode\": \"Default\",\n  \"display\": {\n    \"culture\": \"fr-FR\",\n    \"currency\": \"EUR\",\n    \"countryCode\": \"FR\"\n  },\n  \"context\": {\n    \"stayPeriod\": {\n      \"arrivalDate\": \"2026-06-08T00:00:00Z\",\n      \"departureDate\": \"2026-06-13T00:00:00Z\"\n    },\n    \"guests\": [\n      {\n        \"adults\": 2,\n        \"children\": 0,\n        \"infants\": 0,\n        \"position\": 1,\n        \"memberLevel\": 0\n      }\n    ],\n    \"selectedHotelId\": \"10133\",\n    \"selectedRoomCode\": \"29513\",\n    \"highlightedRateCode\": \"32643\",\n    \"promoCode\": \"DISCOUNT\",\n    \"excludeMixedRates\": false,\n    \"disableCrossSell\": false,\n    \"isMobile\": false\n  },\n  \"metadata\": {\n    \"customTrackingValues\": {}\n  }\n}", false);
var response = await client.PostAsync(request);

Console.WriteLine("{0}", response.Content);

HttpResponse<String> response = Unirest.post("https://{apiBaseUrl}/v2/session")
  .header("Content-Type", "application/json")
  .body("{\n  \"engineId\": \"2MIS\",\n  \"guestSelectionMode\": \"Default\",\n  \"display\": {\n    \"culture\": \"fr-FR\",\n    \"currency\": \"EUR\",\n    \"countryCode\": \"FR\"\n  },\n  \"context\": {\n    \"stayPeriod\": {\n      \"arrivalDate\": \"2026-06-08T00:00:00Z\",\n      \"departureDate\": \"2026-06-13T00:00:00Z\"\n    },\n    \"guests\": [\n      {\n        \"adults\": 2,\n        \"children\": 0,\n        \"infants\": 0,\n        \"position\": 1,\n        \"memberLevel\": 0\n      }\n    ],\n    \"selectedHotelId\": \"10133\",\n    \"selectedRoomCode\": \"29513\",\n    \"highlightedRateCode\": \"32643\",\n    \"promoCode\": \"DISCOUNT\",\n    \"excludeMixedRates\": false,\n    \"disableCrossSell\": false,\n    \"isMobile\": false\n  },\n  \"metadata\": {\n    \"customTrackingValues\": {}\n  }\n}")
  .asString();

{
  "sessionId": "924f66dc-1706-4f13-968f-4a35293e8d2b",
  "warnings": []
}

{
  "code": "InvalidHotelId"
}

{
  "code": "InvalidUserAuthentication",
  "message": "<string>"
}