curl --request POST \
  --url https://client-api.dev.finhost.io/v2/transfer/internal \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "amount": "42",
  "from": {
    "type": "individual",
    "accountId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  },
  "recipient": {
    "type": "account",
    "accountId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "reference": "internalreference"
  }
}
'

import requests

url = "https://client-api.dev.finhost.io/v2/transfer/internal"

payload = {
    "amount": "42",
    "from": {
        "type": "individual",
        "accountId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
    },
    "recipient": {
        "type": "account",
        "accountId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "reference": "internalreference"
    }
}
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({
    amount: '42',
    from: {type: 'individual', accountId: '3c90c3cc-0d44-4b50-8888-8dd25736052a'},
    recipient: {
      type: 'account',
      accountId: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
      reference: 'internalreference'
    }
  })
};

fetch('https://client-api.dev.finhost.io/v2/transfer/internal', 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://client-api.dev.finhost.io/v2/transfer/internal",
  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([
    'amount' => '42',
    'from' => [
        'type' => 'individual',
        'accountId' => '3c90c3cc-0d44-4b50-8888-8dd25736052a'
    ],
    'recipient' => [
        'type' => 'account',
        'accountId' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
        'reference' => 'internalreference'
    ]
  ]),
  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://client-api.dev.finhost.io/v2/transfer/internal"

	payload := strings.NewReader("{\n  \"amount\": \"42\",\n  \"from\": {\n    \"type\": \"individual\",\n    \"accountId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n  },\n  \"recipient\": {\n    \"type\": \"account\",\n    \"accountId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n    \"reference\": \"internalreference\"\n  }\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://client-api.dev.finhost.io/v2/transfer/internal")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"amount\": \"42\",\n  \"from\": {\n    \"type\": \"individual\",\n    \"accountId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n  },\n  \"recipient\": {\n    \"type\": \"account\",\n    \"accountId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n    \"reference\": \"internalreference\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://client-api.dev.finhost.io/v2/transfer/internal")

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  \"amount\": \"42\",\n  \"from\": {\n    \"type\": \"individual\",\n    \"accountId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n  },\n  \"recipient\": {\n    \"type\": \"account\",\n    \"accountId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n    \"reference\": \"internalreference\"\n  }\n}"

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

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "operationId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}

{
  "message": "Amount is too big for this payment method"
}

{
  "message": "Sender has no contract"
}

{
  "message": "Sender not found"
}