curl --request POST \
  --url https://testnet.walletkit.com/transactions/preview-bundle \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "from": "<string>",
  "unsigned_transactions": [
    {
      "to": "<string>",
      "value": "<string>",
      "input": "<string>",
      "gasLimit": "<string>",
      "maxPriorityFeePerGas": "<string>",
      "maxFeePerGas": "<string>",
      "nonce": "<string>"
    }
  ]
}
'

import requests

url = "https://testnet.walletkit.com/transactions/preview-bundle"

payload = {
    "from": "<string>",
    "unsigned_transactions": [
        {
            "to": "<string>",
            "value": "<string>",
            "input": "<string>",
            "gasLimit": "<string>",
            "maxPriorityFeePerGas": "<string>",
            "maxFeePerGas": "<string>",
            "nonce": "<string>"
        }
    ]
}
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({
    from: '<string>',
    unsigned_transactions: [
      {
        to: '<string>',
        value: '<string>',
        input: '<string>',
        gasLimit: '<string>',
        maxPriorityFeePerGas: '<string>',
        maxFeePerGas: '<string>',
        nonce: '<string>'
      }
    ]
  })
};

fetch('https://testnet.walletkit.com/transactions/preview-bundle', 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://testnet.walletkit.com/transactions/preview-bundle",
  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([
    'from' => '<string>',
    'unsigned_transactions' => [
        [
                'to' => '<string>',
                'value' => '<string>',
                'input' => '<string>',
                'gasLimit' => '<string>',
                'maxPriorityFeePerGas' => '<string>',
                'maxFeePerGas' => '<string>',
                'nonce' => '<string>'
        ]
    ]
  ]),
  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://testnet.walletkit.com/transactions/preview-bundle"

	payload := strings.NewReader("{\n  \"from\": \"<string>\",\n  \"unsigned_transactions\": [\n    {\n      \"to\": \"<string>\",\n      \"value\": \"<string>\",\n      \"input\": \"<string>\",\n      \"gasLimit\": \"<string>\",\n      \"maxPriorityFeePerGas\": \"<string>\",\n      \"maxFeePerGas\": \"<string>\",\n      \"nonce\": \"<string>\"\n    }\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://testnet.walletkit.com/transactions/preview-bundle")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"from\": \"<string>\",\n  \"unsigned_transactions\": [\n    {\n      \"to\": \"<string>\",\n      \"value\": \"<string>\",\n      \"input\": \"<string>\",\n      \"gasLimit\": \"<string>\",\n      \"maxPriorityFeePerGas\": \"<string>\",\n      \"maxFeePerGas\": \"<string>\",\n      \"nonce\": \"<string>\"\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://testnet.walletkit.com/transactions/preview-bundle")

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  \"from\": \"<string>\",\n  \"unsigned_transactions\": [\n    {\n      \"to\": \"<string>\",\n      \"value\": \"<string>\",\n      \"input\": \"<string>\",\n      \"gasLimit\": \"<string>\",\n      \"maxPriorityFeePerGas\": \"<string>\",\n      \"maxFeePerGas\": \"<string>\",\n      \"nonce\": \"<string>\"\n    }\n  ]\n}"

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

[
  {
    "from": "<string>",
    "to": "<string>",
    "contract": {
      "address": "<string>",
      "name": "<string>",
      "logo_url": "<string>",
      "token": {
        "uuid": "<string>",
        "contract_address": "<string>",
        "name": "<string>",
        "symbol": "<string>",
        "decimals": 123,
        "display_decimals": 123,
        "logo_url": "<string>"
      },
      "nft": {
        "contract_address": "<string>",
        "name": "<string>",
        "image_url": "<string>",
        "symbol": "<string>"
      }
    },
    "function_name": "<string>",
    "arguments": {},
    "simulation": {
      "success": true,
      "asset_changes": [
        {
          "amount": "<string>",
          "raw_amount": "<string>",
          "from": "<string>",
          "to": "<string>",
          "token": {
            "uuid": "<string>",
            "contract_address": "<string>",
            "name": "<string>",
            "symbol": "<string>",
            "decimals": 123,
            "display_decimals": 123,
            "logo_url": "<string>"
          },
          "nft": {
            "owner_wallet_address": "<string>",
            "contract_address": "<string>",
            "token_id": "<string>",
            "metadata": {
              "name": "<string>",
              "description": "<string>",
              "image": "<string>"
            }
          }
        }
      ],
      "error": "<string>"
    }
  }
]

{
  "error": "<string>",
  "code": "<string>"
}

{
  "error": "<string>",
  "code": "<string>"
}

{
  "error": "<string>",
  "code": "<string>"
}

{
  "error": "<string>",
  "code": "<string>"
}