curl --request POST \
  --url https://gateway-api-testnet.circle.com/v1/x402/settle \
  --header 'Content-Type: application/json' \
  --data '
{
  "paymentPayload": {
    "x402Version": 1,
    "accepted": {
      "scheme": "exact",
      "network": "base-sepolia",
      "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
      "amount": "1000000",
      "payTo": "0x1234567890abcdef1234567890abcdef12345678",
      "maxTimeoutSeconds": 3600,
      "extra": {}
    },
    "payload": {},
    "extensions": {}
  },
  "paymentRequirements": {
    "scheme": "exact",
    "network": "base-sepolia",
    "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
    "amount": "1000000",
    "payTo": "0x1234567890abcdef1234567890abcdef12345678",
    "maxTimeoutSeconds": 3600,
    "extra": {}
  }
}
'

import requests

url = "https://gateway-api-testnet.circle.com/v1/x402/settle"

payload = {
    "paymentPayload": {
        "x402Version": 1,
        "accepted": {
            "scheme": "exact",
            "network": "base-sepolia",
            "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
            "amount": "1000000",
            "payTo": "0x1234567890abcdef1234567890abcdef12345678",
            "maxTimeoutSeconds": 3600,
            "extra": {}
        },
        "payload": {},
        "extensions": {}
    },
    "paymentRequirements": {
        "scheme": "exact",
        "network": "base-sepolia",
        "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
        "amount": "1000000",
        "payTo": "0x1234567890abcdef1234567890abcdef12345678",
        "maxTimeoutSeconds": 3600,
        "extra": {}
    }
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    paymentPayload: {
      x402Version: 1,
      accepted: {
        scheme: 'exact',
        network: 'base-sepolia',
        asset: '0x036CbD53842c5426634e7929541eC2318f3dCF7e',
        amount: '1000000',
        payTo: '0x1234567890abcdef1234567890abcdef12345678',
        maxTimeoutSeconds: 3600,
        extra: {}
      },
      payload: {},
      extensions: {}
    },
    paymentRequirements: {
      scheme: 'exact',
      network: 'base-sepolia',
      asset: '0x036CbD53842c5426634e7929541eC2318f3dCF7e',
      amount: '1000000',
      payTo: '0x1234567890abcdef1234567890abcdef12345678',
      maxTimeoutSeconds: 3600,
      extra: {}
    }
  })
};

fetch('https://gateway-api-testnet.circle.com/v1/x402/settle', 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://gateway-api-testnet.circle.com/v1/x402/settle",
  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([
    'paymentPayload' => [
        'x402Version' => 1,
        'accepted' => [
                'scheme' => 'exact',
                'network' => 'base-sepolia',
                'asset' => '0x036CbD53842c5426634e7929541eC2318f3dCF7e',
                'amount' => '1000000',
                'payTo' => '0x1234567890abcdef1234567890abcdef12345678',
                'maxTimeoutSeconds' => 3600,
                'extra' => [
                                
                ]
        ],
        'payload' => [
                
        ],
        'extensions' => [
                
        ]
    ],
    'paymentRequirements' => [
        'scheme' => 'exact',
        'network' => 'base-sepolia',
        'asset' => '0x036CbD53842c5426634e7929541eC2318f3dCF7e',
        'amount' => '1000000',
        'payTo' => '0x1234567890abcdef1234567890abcdef12345678',
        'maxTimeoutSeconds' => 3600,
        'extra' => [
                
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "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://gateway-api-testnet.circle.com/v1/x402/settle"

	payload := strings.NewReader("{\n  \"paymentPayload\": {\n    \"x402Version\": 1,\n    \"accepted\": {\n      \"scheme\": \"exact\",\n      \"network\": \"base-sepolia\",\n      \"asset\": \"0x036CbD53842c5426634e7929541eC2318f3dCF7e\",\n      \"amount\": \"1000000\",\n      \"payTo\": \"0x1234567890abcdef1234567890abcdef12345678\",\n      \"maxTimeoutSeconds\": 3600,\n      \"extra\": {}\n    },\n    \"payload\": {},\n    \"extensions\": {}\n  },\n  \"paymentRequirements\": {\n    \"scheme\": \"exact\",\n    \"network\": \"base-sepolia\",\n    \"asset\": \"0x036CbD53842c5426634e7929541eC2318f3dCF7e\",\n    \"amount\": \"1000000\",\n    \"payTo\": \"0x1234567890abcdef1234567890abcdef12345678\",\n    \"maxTimeoutSeconds\": 3600,\n    \"extra\": {}\n  }\n}")

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

	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://gateway-api-testnet.circle.com/v1/x402/settle")
  .header("Content-Type", "application/json")
  .body("{\n  \"paymentPayload\": {\n    \"x402Version\": 1,\n    \"accepted\": {\n      \"scheme\": \"exact\",\n      \"network\": \"base-sepolia\",\n      \"asset\": \"0x036CbD53842c5426634e7929541eC2318f3dCF7e\",\n      \"amount\": \"1000000\",\n      \"payTo\": \"0x1234567890abcdef1234567890abcdef12345678\",\n      \"maxTimeoutSeconds\": 3600,\n      \"extra\": {}\n    },\n    \"payload\": {},\n    \"extensions\": {}\n  },\n  \"paymentRequirements\": {\n    \"scheme\": \"exact\",\n    \"network\": \"base-sepolia\",\n    \"asset\": \"0x036CbD53842c5426634e7929541eC2318f3dCF7e\",\n    \"amount\": \"1000000\",\n    \"payTo\": \"0x1234567890abcdef1234567890abcdef12345678\",\n    \"maxTimeoutSeconds\": 3600,\n    \"extra\": {}\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://gateway-api-testnet.circle.com/v1/x402/settle")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"paymentPayload\": {\n    \"x402Version\": 1,\n    \"accepted\": {\n      \"scheme\": \"exact\",\n      \"network\": \"base-sepolia\",\n      \"asset\": \"0x036CbD53842c5426634e7929541eC2318f3dCF7e\",\n      \"amount\": \"1000000\",\n      \"payTo\": \"0x1234567890abcdef1234567890abcdef12345678\",\n      \"maxTimeoutSeconds\": 3600,\n      \"extra\": {}\n    },\n    \"payload\": {},\n    \"extensions\": {}\n  },\n  \"paymentRequirements\": {\n    \"scheme\": \"exact\",\n    \"network\": \"base-sepolia\",\n    \"asset\": \"0x036CbD53842c5426634e7929541eC2318f3dCF7e\",\n    \"amount\": \"1000000\",\n    \"payTo\": \"0x1234567890abcdef1234567890abcdef12345678\",\n    \"maxTimeoutSeconds\": 3600,\n    \"extra\": {}\n  }\n}"

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

{
  "success": true,
  "transaction": "<string>",
  "network": "<string>",
  "payer": "<string>"
}

{
  "success": false,
  "errorReason": "unexpected_error",
  "transaction": "",
  "network": "<string>"
}