curl --request POST \
  --url https://api.natural.com/card-sessions/{sessionId}/claim \
  --header 'Authorization: Bearer <token>'

import requests

url = "https://api.natural.com/card-sessions/{sessionId}/claim"

headers = {"Authorization": "Bearer <token>"}

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

print(response.text)

const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};

fetch('https://api.natural.com/card-sessions/{sessionId}/claim', 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.natural.com/card-sessions/{sessionId}/claim",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.natural.com/card-sessions/{sessionId}/claim"

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

	req.Header.Add("Authorization", "Bearer <token>")

	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.natural.com/card-sessions/{sessionId}/claim")
  .header("Authorization", "Bearer <token>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.natural.com/card-sessions/{sessionId}/claim")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'

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

{
  "sessionId": "csn_01a0e6466ba3713bba0f0d9d36803b92",
  "cardId": "eac_01a0e642ed4873d685273ce0e7d1ccab",
  "card": {
    "number": "4242423289715897",
    "cvc": "128",
    "expirationMonth": 8,
    "expirationYear": 2030,
    "holderName": "Jane Appleseed"
  },
  "billingAddress": {
    "line1": "235 2nd Street",
    "line2": null,
    "city": "San Francisco",
    "state": "CA",
    "postalCode": "94105",
    "country": "US"
  },
  "proxy": {
    "host": "us-va.browser.relay.evervault.app",
    "port": 443,
    "protocol": "https",
    "username": "app_1a2b3c4d5e6f",
    "password": "eyJhbGciOiJ...redacted",
    "caBundleUrl": "https://ca.evervault.com"
  },
  "allowedHosts": [
    "api.stripe.com"
  ],
  "expiresAt": "2026-09-29T18:12:00.000Z",
  "instructions": [
    "Use the stand-in card through the proxy. The returned card fields resolve to the saved card only when sent to allowedHosts through the returned proxy before expiresAt.",
    "Use the returned connection settings. Configure the proxy using protocol, host, port, username, and password. Keep the claim credentials secret; never include them in logs.",
    "Trust the proxy certificate. Add the CA from caBundleUrl to the trust configuration used by your browser or HTTP client, preserving its existing trusted certificates. Keep TLS verification enabled.",
    "Route the payment requests. Ensure requests to allowedHosts from the checkout page and its frames pass through the proxy. Configure routing before submitting payment.",
    "Keep interception active. If you intercept requests, keep the runtime's event loop running so handlers can receive and forward them. Avoid blocking waits that prevent handlers from executing.",
    "Verify routing before paying. Use a harmless request to an allowed host to confirm that the browser's traffic actually passes through the proxy.",
    "Stop on routing failures. Do not forward card requests directly when the proxy fails. Check routing, certificate trust, and credential expiry before retrying payment, and first confirm the previous attempt did not complete."
  ]
}

{
  "errors": [
    {
      "code": "invalid_value",
      "detail": "The information you entered isn't valid. Please check it and try again.",
      "status": "400",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "unauthenticated",
      "detail": "Authentication is required.",
      "status": "401",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "forbidden",
      "detail": "You do not have permission to perform this action.",
      "status": "403",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "not_found",
      "detail": "The requested resource was not found.",
      "status": "404",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "conflict",
      "detail": "The request conflicts with the current resource state.",
      "status": "409",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "invalid_value",
      "detail": "Too big: expected string to have <=80 characters",
      "status": "422",
      "source": {
        "pointer": "/data/attributes/description"
      },
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "mfa_required",
      "detail": "MFA verification required",
      "status": "428",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "rate_limited",
      "detail": "Too many requests. Please try again later.",
      "status": "429",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "server_error",
      "detail": "Something went wrong.",
      "status": "500",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "not_implemented",
      "detail": "This operation is not available.",
      "status": "501",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "bad_gateway",
      "detail": "We couldn't complete that request because one of Natural's services returned an unexpected response. Please try again.",
      "status": "502",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}

{
  "errors": [
    {
      "code": "service_unavailable",
      "detail": "The service is temporarily unavailable.",
      "status": "503",
      "meta": {
        "supportId": "req_a1b2c3d4e5f6"
      }
    }
  ]
}