curl --request POST \
  --url https://api.staging.payrails.io/auth/token/{clientId} \
  --header 'x-api-key: <api-key>'

import requests

url = "https://api.staging.payrails.io/auth/token/{clientId}"

headers = {"x-api-key": "<api-key>"}

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

print(response.text)

const options = {method: 'POST', headers: {'x-api-key': '<api-key>'}};

fetch('https://api.staging.payrails.io/auth/token/{clientId}', 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.staging.payrails.io/auth/token/{clientId}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_HTTPHEADER => [
    "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"
	"net/http"
	"io"
)

func main() {

	url := "https://api.staging.payrails.io/auth/token/{clientId}"

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

	req.Header.Add("x-api-key", "<api-key>")

	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.staging.payrails.io/auth/token/{clientId}")
  .header("x-api-key", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.staging.payrails.io/auth/token/{clientId}")

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

request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<api-key>'

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

{
  "access_token": "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwiaWF0IjoxNTE2MjM5MDIyLCJleHAiOjM2MDB9.YLbew8qP_oOG8uY_lYHsLRv8YS5VzXW80gfNV4_KsbMD3R4xkndHjiz2k0YE58Vo2xyZoCI43_EUH0UZBI9pwAkG8kXTwWPNf95ILTvFQnAnnhWFDZUn2A0pB59bfDoEzhJI3_sI0KydqAOpUwM5kAzPWwKre0-da7ds27DngGdy0bQeaqk1TlHr6bHYrq1zn05lI-wm7V3BdHSxSIky-BED27yhDkXsdL55I9DW_-79cmpStRsoWRU2g4ZvOrgjZ5v7GSyALx7QBYEDOjoG4OLiva2jGJ8OI1OBP7iECiWTznpABdNvpwhsFvb4fVWe3pt_nPUM-8YNxNHVHNmheg",
  "token_type": "Bearer",
  "expires_in": 3600
}

{
  "errors": [
    {
      "id": "a24bc325-3929-4d9d-9c08-b3aa532685b7",
      "code": "request.malformed",
      "detail": "The request has malformed syntax",
      "docUrl": "https://docs.payrails.com/docs/resources/error-codes#requestmalformed"
    }
  ]
}

{
  "errors": [
    {
      "id": "a24bc325-3929-4d9d-9c08-b3aa532685b7",
      "code": "request.unauthorized",
      "detail": "The request lacks necessary credentials to perform the specified action",
      "docUrl": "https://docs.payrails.com/docs/resources/error-codes#requestunauthorized"
    }
  ]
}