curl --request POST \
  --url https://api.synctera.com/v2/ach/gateways \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "url": "https://fintech.com/ach/auth",
  "custom_headers": {
    "Content-Type": [
      "text/html",
      "application/json"
    ],
    "Host": [
      "https://host.com"
    ]
  },
  "disabled": false,
  "max_wait_ms": 1500
}
'

import requests

url = "https://api.synctera.com/v2/ach/gateways"

payload = {
    "url": "https://fintech.com/ach/auth",
    "custom_headers": {
        "Content-Type": ["text/html", "application/json"],
        "Host": ["https://host.com"]
    },
    "disabled": False,
    "max_wait_ms": 1500
}
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({
    url: 'https://fintech.com/ach/auth',
    custom_headers: {'Content-Type': ['text/html', 'application/json'], Host: ['https://host.com']},
    disabled: false,
    max_wait_ms: 1500
  })
};

fetch('https://api.synctera.com/v2/ach/gateways', 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.synctera.com/v2/ach/gateways",
  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([
    'url' => 'https://fintech.com/ach/auth',
    'custom_headers' => [
        'Content-Type' => [
                'text/html',
                'application/json'
        ],
        'Host' => [
                'https://host.com'
        ]
    ],
    'disabled' => false,
    'max_wait_ms' => 1500
  ]),
  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.synctera.com/v2/ach/gateways"

	payload := strings.NewReader("{\n  \"url\": \"https://fintech.com/ach/auth\",\n  \"custom_headers\": {\n    \"Content-Type\": [\n      \"text/html\",\n      \"application/json\"\n    ],\n    \"Host\": [\n      \"https://host.com\"\n    ]\n  },\n  \"disabled\": false,\n  \"max_wait_ms\": 1500\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.synctera.com/v2/ach/gateways")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"url\": \"https://fintech.com/ach/auth\",\n  \"custom_headers\": {\n    \"Content-Type\": [\n      \"text/html\",\n      \"application/json\"\n    ],\n    \"Host\": [\n      \"https://host.com\"\n    ]\n  },\n  \"disabled\": false,\n  \"max_wait_ms\": 1500\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.synctera.com/v2/ach/gateways")

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  \"url\": \"https://fintech.com/ach/auth\",\n  \"custom_headers\": {\n    \"Content-Type\": [\n      \"text/html\",\n      \"application/json\"\n    ],\n    \"Host\": [\n      \"https://host.com\"\n    ]\n  },\n  \"disabled\": false,\n  \"max_wait_ms\": 1500\n}"

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

{
  "tenant": "abcdef_ghijkl",
  "created": "2010-05-06T12:23:34.321Z",
  "custom_headers": {
    "Content-Type": [
      "text/html",
      "application/json"
    ],
    "Host": [
      "https://host.com"
    ]
  },
  "disabled": false,
  "id": "b01db9c7-78f2-4a99-8aca-1231d32f9b96",
  "max_wait_ms": 1500,
  "updated": "2010-05-06T12:23:34.321Z",
  "url": "https://fintech.com/ach/auth"
}

{
  "code": "BAD_REQUEST_BODY",
  "detail": "missing required fields: first_name, dob",
  "status": 400,
  "title": "Bad Request Body",
  "type": "https://dev.synctera.com/errors/bad-request-body"
}

{
  "code": "BAD_REQUEST_BODY",
  "detail": "missing required fields: first_name, dob",
  "status": 400,
  "title": "Bad Request Body",
  "type": "https://dev.synctera.com/errors/bad-request-body"
}

{
  "code": "BAD_REQUEST_BODY",
  "detail": "missing required fields: first_name, dob",
  "status": 400,
  "title": "Bad Request Body",
  "type": "https://dev.synctera.com/errors/bad-request-body"
}