curl --request POST \
  --url https://int-data.moneydesktop.com/institutions/search \
  --header 'Content-Type: application/vnd.mx.nexus.v1+json' \
  --header 'MD-SESSION-TOKEN: <api-key>' \
  --data '
{
  "institution": {
    "account_types": "deprecated",
    "name": "MX Bank",
    "supports_account_identification": false,
    "supports_account_verification": false,
    "supports_transaction_history": true,
    "url": "https://mx.com"
  }
}
'

import requests

url = "https://int-data.moneydesktop.com/institutions/search"

payload = { "institution": {
        "account_types": "deprecated",
        "name": "MX Bank",
        "supports_account_identification": False,
        "supports_account_verification": False,
        "supports_transaction_history": True,
        "url": "https://mx.com"
    } }
headers = {
    "MD-SESSION-TOKEN": "<api-key>",
    "Content-Type": "application/vnd.mx.nexus.v1+json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'MD-SESSION-TOKEN': '<api-key>',
    'Content-Type': 'application/vnd.mx.nexus.v1+json'
  },
  body: JSON.stringify({
    institution: {
      account_types: 'deprecated',
      name: 'MX Bank',
      supports_account_identification: false,
      supports_account_verification: false,
      supports_transaction_history: true,
      url: 'https://mx.com'
    }
  })
};

fetch('https://int-data.moneydesktop.com/institutions/search', 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://int-data.moneydesktop.com/institutions/search",
  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([
    'institution' => [
        'account_types' => 'deprecated',
        'name' => 'MX Bank',
        'supports_account_identification' => false,
        'supports_account_verification' => false,
        'supports_transaction_history' => true,
        'url' => 'https://mx.com'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/vnd.mx.nexus.v1+json",
    "MD-SESSION-TOKEN: <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"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://int-data.moneydesktop.com/institutions/search"

	payload := strings.NewReader("{\n  \"institution\": {\n    \"account_types\": \"deprecated\",\n    \"name\": \"MX Bank\",\n    \"supports_account_identification\": false,\n    \"supports_account_verification\": false,\n    \"supports_transaction_history\": true,\n    \"url\": \"https://mx.com\"\n  }\n}")

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

	req.Header.Add("MD-SESSION-TOKEN", "<api-key>")
	req.Header.Add("Content-Type", "application/vnd.mx.nexus.v1+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://int-data.moneydesktop.com/institutions/search")
  .header("MD-SESSION-TOKEN", "<api-key>")
  .header("Content-Type", "application/vnd.mx.nexus.v1+json")
  .body("{\n  \"institution\": {\n    \"account_types\": \"deprecated\",\n    \"name\": \"MX Bank\",\n    \"supports_account_identification\": false,\n    \"supports_account_verification\": false,\n    \"supports_transaction_history\": true,\n    \"url\": \"https://mx.com\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://int-data.moneydesktop.com/institutions/search")

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

request = Net::HTTP::Post.new(url)
request["MD-SESSION-TOKEN"] = '<api-key>'
request["Content-Type"] = 'application/vnd.mx.nexus.v1+json'
request.body = "{\n  \"institution\": {\n    \"account_types\": \"deprecated\",\n    \"name\": \"MX Bank\",\n    \"supports_account_identification\": false,\n    \"supports_account_verification\": false,\n    \"supports_transaction_history\": true,\n    \"url\": \"https://mx.com\"\n  }\n}"

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

{
  "institutions": [
    {
      "code": "mxbank",
      "created_at": "2016-09-21T22:03:55.000Z",
      "guid": "INS-1572a04c-912b-59bf-5841-332c7dfafaef",
      "forgot_password_url": "https://www.mx.com/forgot-password",
      "forgot_username_url": "https://www.mx.com/forgot-username",
      "has_checking_account": "https://www.mx.com/forgot-username",
      "has_credit_card_accounts": true,
      "has_investment_accounts": true,
      "has_line_of_credit_accounts": true,
      "has_loan_accounts": true,
      "has_mortgage_accounts": true,
      "has_savings_accounts": true,
      "is_disabled_by_client": false,
      "is_hidden": true,
      "is_test": true,
      "iso_country_code": [
        "US",
        "CA"
      ],
      "medium_logo_url": "https://content.moneydesktop.com/storage/MD_Assets/Ipad%20Logos/100x100/INS-1572a04c-912b-59bf-5841-332c7dfafaef_100x100.png",
      "name": "MX Bank",
      "popularity": 72644,
      "small_logo_url": "https://content.moneydesktop.com/storage/MD_AssetsIpad%20Logos/50x50/INS-1572a04c-912b-59bf-5841-332c7dfafaef_50x50.png",
      "supports_account_identification": true,
      "supports_account_verification": true,
      "supports_oauth": true,
      "supports_transaction_history": false,
      "trouble_signing_in_url": "https://www.mx.com/trouble-signing-in",
      "updated_at": "2022-04-11T17:38:27.000Z",
      "url": "https://www.mx.com"
    }
  ]
}