curl --request POST \
  --url https://dash.getopenrails.com/api/gateway/sessions \
  --header 'Content-Type: application/json' \
  --data '
{
  "product": "<string>",
  "amount": 123,
  "customer": "jsmith@example.com",
  "redirectUrl": "<string>",
  "metadata": {},
  "environment": "sandbox",
  "idempotencyKey": "<string>",
  "clientReferenceId": "<string>"
}
'

import requests

url = "https://dash.getopenrails.com/api/gateway/sessions"

payload = {
    "product": "<string>",
    "amount": 123,
    "customer": "jsmith@example.com",
    "redirectUrl": "<string>",
    "metadata": {},
    "environment": "sandbox",
    "idempotencyKey": "<string>",
    "clientReferenceId": "<string>"
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    product: '<string>',
    amount: 123,
    customer: 'jsmith@example.com',
    redirectUrl: '<string>',
    metadata: {},
    environment: 'sandbox',
    idempotencyKey: '<string>',
    clientReferenceId: '<string>'
  })
};

fetch('https://dash.getopenrails.com/api/gateway/sessions', 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://dash.getopenrails.com/api/gateway/sessions",
  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([
    'product' => '<string>',
    'amount' => 123,
    'customer' => 'jsmith@example.com',
    'redirectUrl' => '<string>',
    'metadata' => [
        
    ],
    'environment' => 'sandbox',
    'idempotencyKey' => '<string>',
    'clientReferenceId' => '<string>'
  ]),
  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;
}

package main

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

func main() {

	url := "https://dash.getopenrails.com/api/gateway/sessions"

	payload := strings.NewReader("{\n  \"product\": \"<string>\",\n  \"amount\": 123,\n  \"customer\": \"jsmith@example.com\",\n  \"redirectUrl\": \"<string>\",\n  \"metadata\": {},\n  \"environment\": \"sandbox\",\n  \"idempotencyKey\": \"<string>\",\n  \"clientReferenceId\": \"<string>\"\n}")

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

	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://dash.getopenrails.com/api/gateway/sessions")
  .header("Content-Type", "application/json")
  .body("{\n  \"product\": \"<string>\",\n  \"amount\": 123,\n  \"customer\": \"jsmith@example.com\",\n  \"redirectUrl\": \"<string>\",\n  \"metadata\": {},\n  \"environment\": \"sandbox\",\n  \"idempotencyKey\": \"<string>\",\n  \"clientReferenceId\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://dash.getopenrails.com/api/gateway/sessions")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"product\": \"<string>\",\n  \"amount\": 123,\n  \"customer\": \"jsmith@example.com\",\n  \"redirectUrl\": \"<string>\",\n  \"metadata\": {},\n  \"environment\": \"sandbox\",\n  \"idempotencyKey\": \"<string>\",\n  \"clientReferenceId\": \"<string>\"\n}"

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

{
  "id": "<string>",
  "object": "checkout_session",
  "checkoutUrl": "<string>",
  "amount": 123,
  "currency": "<string>",
  "redirectUrl": "<string>",
  "customer": "jsmith@example.com",
  "metadata": {},
  "environment": "sandbox"
}

{
  "ok": false,
  "error": {
    "code": "<string>",
    "message": "<string>",
    "field": "<string>",
    "suggestion": "<string>",
    "issues": [
      {
        "path": "<string>",
        "code": "<string>",
        "message": "<string>"
      }
    ]
  }
}