curl --request POST \
  --url https://facilitator.rail402.dev/settle \
  --header 'Content-Type: application/json' \
  --data '
{
  "paymentPayload": {
    "x402Version": 2,
    "accepted": {
      "scheme": "exact",
      "network": "stellar:testnet",
      "asset": "CBIELTK6YBZJU5UP2WWQEUCYKLPU6AUNZ2BQ4WWFEIE3USCIHMXQDAMA",
      "amount": "500000",
      "payTo": "GBOQSB3F...QR2",
      "maxTimeoutSeconds": 60,
      "extra": {}
    },
    "payload": {
      "transaction": "<string>"
    },
    "extensions": {}
  },
  "paymentRequirements": {
    "scheme": "exact",
    "network": "stellar:testnet",
    "asset": "CBIELTK6YBZJU5UP2WWQEUCYKLPU6AUNZ2BQ4WWFEIE3USCIHMXQDAMA",
    "amount": "500000",
    "payTo": "GBOQSB3F...QR2",
    "maxTimeoutSeconds": 60,
    "extra": {}
  },
  "x402Version": 2
}
'

import requests

url = "https://facilitator.rail402.dev/settle"

payload = {
    "paymentPayload": {
        "x402Version": 2,
        "accepted": {
            "scheme": "exact",
            "network": "stellar:testnet",
            "asset": "CBIELTK6YBZJU5UP2WWQEUCYKLPU6AUNZ2BQ4WWFEIE3USCIHMXQDAMA",
            "amount": "500000",
            "payTo": "GBOQSB3F...QR2",
            "maxTimeoutSeconds": 60,
            "extra": {}
        },
        "payload": { "transaction": "<string>" },
        "extensions": {}
    },
    "paymentRequirements": {
        "scheme": "exact",
        "network": "stellar:testnet",
        "asset": "CBIELTK6YBZJU5UP2WWQEUCYKLPU6AUNZ2BQ4WWFEIE3USCIHMXQDAMA",
        "amount": "500000",
        "payTo": "GBOQSB3F...QR2",
        "maxTimeoutSeconds": 60,
        "extra": {}
    },
    "x402Version": 2
}
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: 2,
      accepted: {
        scheme: 'exact',
        network: 'stellar:testnet',
        asset: 'CBIELTK6YBZJU5UP2WWQEUCYKLPU6AUNZ2BQ4WWFEIE3USCIHMXQDAMA',
        amount: '500000',
        payTo: 'GBOQSB3F...QR2',
        maxTimeoutSeconds: 60,
        extra: {}
      },
      payload: {transaction: '<string>'},
      extensions: {}
    },
    paymentRequirements: {
      scheme: 'exact',
      network: 'stellar:testnet',
      asset: 'CBIELTK6YBZJU5UP2WWQEUCYKLPU6AUNZ2BQ4WWFEIE3USCIHMXQDAMA',
      amount: '500000',
      payTo: 'GBOQSB3F...QR2',
      maxTimeoutSeconds: 60,
      extra: {}
    },
    x402Version: 2
  })
};

fetch('https://facilitator.rail402.dev/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://facilitator.rail402.dev/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' => 2,
        'accepted' => [
                'scheme' => 'exact',
                'network' => 'stellar:testnet',
                'asset' => 'CBIELTK6YBZJU5UP2WWQEUCYKLPU6AUNZ2BQ4WWFEIE3USCIHMXQDAMA',
                'amount' => '500000',
                'payTo' => 'GBOQSB3F...QR2',
                'maxTimeoutSeconds' => 60,
                'extra' => [
                                
                ]
        ],
        'payload' => [
                'transaction' => '<string>'
        ],
        'extensions' => [
                
        ]
    ],
    'paymentRequirements' => [
        'scheme' => 'exact',
        'network' => 'stellar:testnet',
        'asset' => 'CBIELTK6YBZJU5UP2WWQEUCYKLPU6AUNZ2BQ4WWFEIE3USCIHMXQDAMA',
        'amount' => '500000',
        'payTo' => 'GBOQSB3F...QR2',
        'maxTimeoutSeconds' => 60,
        'extra' => [
                
        ]
    ],
    'x402Version' => 2
  ]),
  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://facilitator.rail402.dev/settle"

	payload := strings.NewReader("{\n  \"paymentPayload\": {\n    \"x402Version\": 2,\n    \"accepted\": {\n      \"scheme\": \"exact\",\n      \"network\": \"stellar:testnet\",\n      \"asset\": \"CBIELTK6YBZJU5UP2WWQEUCYKLPU6AUNZ2BQ4WWFEIE3USCIHMXQDAMA\",\n      \"amount\": \"500000\",\n      \"payTo\": \"GBOQSB3F...QR2\",\n      \"maxTimeoutSeconds\": 60,\n      \"extra\": {}\n    },\n    \"payload\": {\n      \"transaction\": \"<string>\"\n    },\n    \"extensions\": {}\n  },\n  \"paymentRequirements\": {\n    \"scheme\": \"exact\",\n    \"network\": \"stellar:testnet\",\n    \"asset\": \"CBIELTK6YBZJU5UP2WWQEUCYKLPU6AUNZ2BQ4WWFEIE3USCIHMXQDAMA\",\n    \"amount\": \"500000\",\n    \"payTo\": \"GBOQSB3F...QR2\",\n    \"maxTimeoutSeconds\": 60,\n    \"extra\": {}\n  },\n  \"x402Version\": 2\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://facilitator.rail402.dev/settle")
  .header("Content-Type", "application/json")
  .body("{\n  \"paymentPayload\": {\n    \"x402Version\": 2,\n    \"accepted\": {\n      \"scheme\": \"exact\",\n      \"network\": \"stellar:testnet\",\n      \"asset\": \"CBIELTK6YBZJU5UP2WWQEUCYKLPU6AUNZ2BQ4WWFEIE3USCIHMXQDAMA\",\n      \"amount\": \"500000\",\n      \"payTo\": \"GBOQSB3F...QR2\",\n      \"maxTimeoutSeconds\": 60,\n      \"extra\": {}\n    },\n    \"payload\": {\n      \"transaction\": \"<string>\"\n    },\n    \"extensions\": {}\n  },\n  \"paymentRequirements\": {\n    \"scheme\": \"exact\",\n    \"network\": \"stellar:testnet\",\n    \"asset\": \"CBIELTK6YBZJU5UP2WWQEUCYKLPU6AUNZ2BQ4WWFEIE3USCIHMXQDAMA\",\n    \"amount\": \"500000\",\n    \"payTo\": \"GBOQSB3F...QR2\",\n    \"maxTimeoutSeconds\": 60,\n    \"extra\": {}\n  },\n  \"x402Version\": 2\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://facilitator.rail402.dev/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\": 2,\n    \"accepted\": {\n      \"scheme\": \"exact\",\n      \"network\": \"stellar:testnet\",\n      \"asset\": \"CBIELTK6YBZJU5UP2WWQEUCYKLPU6AUNZ2BQ4WWFEIE3USCIHMXQDAMA\",\n      \"amount\": \"500000\",\n      \"payTo\": \"GBOQSB3F...QR2\",\n      \"maxTimeoutSeconds\": 60,\n      \"extra\": {}\n    },\n    \"payload\": {\n      \"transaction\": \"<string>\"\n    },\n    \"extensions\": {}\n  },\n  \"paymentRequirements\": {\n    \"scheme\": \"exact\",\n    \"network\": \"stellar:testnet\",\n    \"asset\": \"CBIELTK6YBZJU5UP2WWQEUCYKLPU6AUNZ2BQ4WWFEIE3USCIHMXQDAMA\",\n    \"amount\": \"500000\",\n    \"payTo\": \"GBOQSB3F...QR2\",\n    \"maxTimeoutSeconds\": 60,\n    \"extra\": {}\n  },\n  \"x402Version\": 2\n}"

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