curl --request POST \
  --url https://api.gelato.cloud/rpc/{chainId} \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <x-api-key>' \
  --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "eth_sendUserOperation",
  "params": [
    {
      "sender": "0x....",
      "nonce": "0x....",
      "factory": "0x....",
      "factoryData": "0x....",
      "callData": "0x....",
      "signature": "0x....",
      "maxFeePerGas": "0x....",
      "maxPriorityFeePerGas": "0x....",
      "callGasLimit": "0x....",
      "verificationGasLimit": "0x....",
      "preVerificationGas": "0x....",
      "paymaster": "0x....",
      "paymasterData": "0x....",
      "paymasterPostOpGasLimit": "0x....",
      "paymasterVerificationGasLimit": "0x....",
      "eip7702Auth": {
        "address": "0x....",
        "chainId": "0x....",
        "nonce": "0x....",
        "r": "0x....",
        "s": "0x....",
        "yParity": "0x...."
      }
    },
    "0x0000000071727De22E5E9d8BAf0edAc6f37da032"
  ]
}
'

import requests

url = "https://api.gelato.cloud/rpc/{chainId}"

payload = {
    "id": 1,
    "jsonrpc": "2.0",
    "method": "eth_sendUserOperation",
    "params": [
        {
            "sender": "0x....",
            "nonce": "0x....",
            "factory": "0x....",
            "factoryData": "0x....",
            "callData": "0x....",
            "signature": "0x....",
            "maxFeePerGas": "0x....",
            "maxPriorityFeePerGas": "0x....",
            "callGasLimit": "0x....",
            "verificationGasLimit": "0x....",
            "preVerificationGas": "0x....",
            "paymaster": "0x....",
            "paymasterData": "0x....",
            "paymasterPostOpGasLimit": "0x....",
            "paymasterVerificationGasLimit": "0x....",
            "eip7702Auth": {
                "address": "0x....",
                "chainId": "0x....",
                "nonce": "0x....",
                "r": "0x....",
                "s": "0x....",
                "yParity": "0x...."
            }
        },
        "0x0000000071727De22E5E9d8BAf0edAc6f37da032"
    ]
}
headers = {
    "X-API-Key": "<x-api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'X-API-Key': '<x-api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    id: 1,
    jsonrpc: '2.0',
    method: 'eth_sendUserOperation',
    params: [
      {
        sender: '0x....',
        nonce: '0x....',
        factory: '0x....',
        factoryData: '0x....',
        callData: '0x....',
        signature: '0x....',
        maxFeePerGas: '0x....',
        maxPriorityFeePerGas: '0x....',
        callGasLimit: '0x....',
        verificationGasLimit: '0x....',
        preVerificationGas: '0x....',
        paymaster: '0x....',
        paymasterData: '0x....',
        paymasterPostOpGasLimit: '0x....',
        paymasterVerificationGasLimit: '0x....',
        eip7702Auth: {
          address: '0x....',
          chainId: '0x....',
          nonce: '0x....',
          r: '0x....',
          s: '0x....',
          yParity: '0x....'
        }
      },
      '0x0000000071727De22E5E9d8BAf0edAc6f37da032'
    ]
  })
};

fetch('https://api.gelato.cloud/rpc/{chainId}', 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.gelato.cloud/rpc/{chainId}",
  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([
    'id' => 1,
    'jsonrpc' => '2.0',
    'method' => 'eth_sendUserOperation',
    'params' => [
        [
                'sender' => '0x....',
                'nonce' => '0x....',
                'factory' => '0x....',
                'factoryData' => '0x....',
                'callData' => '0x....',
                'signature' => '0x....',
                'maxFeePerGas' => '0x....',
                'maxPriorityFeePerGas' => '0x....',
                'callGasLimit' => '0x....',
                'verificationGasLimit' => '0x....',
                'preVerificationGas' => '0x....',
                'paymaster' => '0x....',
                'paymasterData' => '0x....',
                'paymasterPostOpGasLimit' => '0x....',
                'paymasterVerificationGasLimit' => '0x....',
                'eip7702Auth' => [
                                'address' => '0x....',
                                'chainId' => '0x....',
                                'nonce' => '0x....',
                                'r' => '0x....',
                                's' => '0x....',
                                'yParity' => '0x....'
                ]
        ],
        '0x0000000071727De22E5E9d8BAf0edAc6f37da032'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-API-Key: <x-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://api.gelato.cloud/rpc/{chainId}"

	payload := strings.NewReader("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_sendUserOperation\",\n  \"params\": [\n    {\n      \"sender\": \"0x....\",\n      \"nonce\": \"0x....\",\n      \"factory\": \"0x....\",\n      \"factoryData\": \"0x....\",\n      \"callData\": \"0x....\",\n      \"signature\": \"0x....\",\n      \"maxFeePerGas\": \"0x....\",\n      \"maxPriorityFeePerGas\": \"0x....\",\n      \"callGasLimit\": \"0x....\",\n      \"verificationGasLimit\": \"0x....\",\n      \"preVerificationGas\": \"0x....\",\n      \"paymaster\": \"0x....\",\n      \"paymasterData\": \"0x....\",\n      \"paymasterPostOpGasLimit\": \"0x....\",\n      \"paymasterVerificationGasLimit\": \"0x....\",\n      \"eip7702Auth\": {\n        \"address\": \"0x....\",\n        \"chainId\": \"0x....\",\n        \"nonce\": \"0x....\",\n        \"r\": \"0x....\",\n        \"s\": \"0x....\",\n        \"yParity\": \"0x....\"\n      }\n    },\n    \"0x0000000071727De22E5E9d8BAf0edAc6f37da032\"\n  ]\n}")

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

	req.Header.Add("X-API-Key", "<x-api-key>")
	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.gelato.cloud/rpc/{chainId}")
  .header("X-API-Key", "<x-api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_sendUserOperation\",\n  \"params\": [\n    {\n      \"sender\": \"0x....\",\n      \"nonce\": \"0x....\",\n      \"factory\": \"0x....\",\n      \"factoryData\": \"0x....\",\n      \"callData\": \"0x....\",\n      \"signature\": \"0x....\",\n      \"maxFeePerGas\": \"0x....\",\n      \"maxPriorityFeePerGas\": \"0x....\",\n      \"callGasLimit\": \"0x....\",\n      \"verificationGasLimit\": \"0x....\",\n      \"preVerificationGas\": \"0x....\",\n      \"paymaster\": \"0x....\",\n      \"paymasterData\": \"0x....\",\n      \"paymasterPostOpGasLimit\": \"0x....\",\n      \"paymasterVerificationGasLimit\": \"0x....\",\n      \"eip7702Auth\": {\n        \"address\": \"0x....\",\n        \"chainId\": \"0x....\",\n        \"nonce\": \"0x....\",\n        \"r\": \"0x....\",\n        \"s\": \"0x....\",\n        \"yParity\": \"0x....\"\n      }\n    },\n    \"0x0000000071727De22E5E9d8BAf0edAc6f37da032\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.gelato.cloud/rpc/{chainId}")

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

request = Net::HTTP::Post.new(url)
request["X-API-Key"] = '<x-api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"id\": 1,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_sendUserOperation\",\n  \"params\": [\n    {\n      \"sender\": \"0x....\",\n      \"nonce\": \"0x....\",\n      \"factory\": \"0x....\",\n      \"factoryData\": \"0x....\",\n      \"callData\": \"0x....\",\n      \"signature\": \"0x....\",\n      \"maxFeePerGas\": \"0x....\",\n      \"maxPriorityFeePerGas\": \"0x....\",\n      \"callGasLimit\": \"0x....\",\n      \"verificationGasLimit\": \"0x....\",\n      \"preVerificationGas\": \"0x....\",\n      \"paymaster\": \"0x....\",\n      \"paymasterData\": \"0x....\",\n      \"paymasterPostOpGasLimit\": \"0x....\",\n      \"paymasterVerificationGasLimit\": \"0x....\",\n      \"eip7702Auth\": {\n        \"address\": \"0x....\",\n        \"chainId\": \"0x....\",\n        \"nonce\": \"0x....\",\n        \"r\": \"0x....\",\n        \"s\": \"0x....\",\n        \"yParity\": \"0x....\"\n      }\n    },\n    \"0x0000000071727De22E5E9d8BAf0edAc6f37da032\"\n  ]\n}"

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

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": "0x13574b2256b73bdc33fb121052f64b3803161e5ec602a6dc9e56177ba387e700"
}

{
  "message": "<string>"
}