Accepteer Bitcoin via Lightning.

: "${WHOLLY_TOKEN:?Set WHOLLY_TOKEN to your server-side API token}"
# Keep this key and the exact body for retries; use a new key for each new invoice.
curl --fail-with-body --max-time 30 \
  --request POST \
  --url "https://api.example.com/v1/projects/YOUR_PROJECT_ID/stores/YOUR_STORE_ID/invoices" \
  --header "Authorization: Bearer $WHOLLY_TOKEN" \
  --header 'Idempotency-Key: order-1042-attempt-1' \
  --header 'Content-Type: application/json' \
  --data-raw '{
  "amount": "25.00",
  "currency": "EUR",
  "order_id": "order-1042",
  "payment_methods": [
    {
      "chain_slug": "bitcoin",
      "payment_rail": "lightning"
    }
  ]
}'

// Node.js 18+ · run on your server, never in browser code.
const token = process.env.WHOLLY_TOKEN;
if (!token) throw new Error("Set WHOLLY_TOKEN");
// Keep this key and the exact body for retries; use a new key for each new invoice.
const body = `{
  "amount": "25.00",
  "currency": "EUR",
  "order_id": "order-1042",
  "payment_methods": [
    {
      "chain_slug": "bitcoin",
      "payment_rail": "lightning"
    }
  ]
}`;
const response = await fetch("https://api.example.com/v1/projects/YOUR_PROJECT_ID/stores/YOUR_STORE_ID/invoices", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${token}`,
    "Idempotency-Key": "order-1042-attempt-1",
    "Content-Type": "application/json"
  },
  body,
  redirect: "error",
  signal: AbortSignal.timeout(30000)
});
if (!response.ok) throw new Error(`HTTP ${response.status}: ${await response.text()}`);
console.log(await response.json());

<?php
// PHP 8+ with the cURL extension; run on your server.
$token = getenv('WHOLLY_TOKEN');
if (!$token) { throw new RuntimeException('Set WHOLLY_TOKEN'); }
// Keep this key and the exact body for retries; use a new key for each new invoice.
$body = <<<'JSON'
{
  "amount": "25.00",
  "currency": "EUR",
  "order_id": "order-1042",
  "payment_methods": [
    {
      "chain_slug": "bitcoin",
      "payment_rail": "lightning"
    }
  ]
}
JSON;
$ch = curl_init("https://api.example.com/v1/projects/YOUR_PROJECT_ID/stores/YOUR_STORE_ID/invoices");
curl_setopt_array($ch, [
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_FOLLOWLOCATION => false,
    CURLOPT_TIMEOUT => 30,
    CURLOPT_HTTPHEADER => ['Authorization: Bearer ' . $token, "Idempotency-Key: order-1042-attempt-1", "Content-Type: application/json"],
    CURLOPT_POSTFIELDS => $body,
]);
$response = curl_exec($ch);
$status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if ($response === false) { throw new RuntimeException(curl_error($ch)); }
curl_close($ch);
if ($status < 200 || $status >= 300) { throw new RuntimeException("HTTP $status: $response"); }
print_r(json_decode($response, true, 512, JSON_THROW_ON_ERROR));

# Python 3 · standard library; run on your server.
import json
import os
from urllib.request import Request, build_opener, HTTPRedirectHandler

class NoRedirect(HTTPRedirectHandler):
    def redirect_request(self, req, fp, code, msg, headers, newurl):
        return None

# Keep this key and the exact body for retries; use a new key for each new invoice.
headers = {
    "Idempotency-Key": "order-1042-attempt-1",
    "Content-Type": "application/json"
}
headers["Authorization"] = "Bearer " + os.environ["WHOLLY_TOKEN"]
body = """{
  "amount": "25.00",
  "currency": "EUR",
  "order_id": "order-1042",
  "payment_methods": [
    {
      "chain_slug": "bitcoin",
      "payment_rail": "lightning"
    }
  ]
}""".encode("utf-8")
request = Request("https://api.example.com/v1/projects/YOUR_PROJECT_ID/stores/YOUR_STORE_ID/invoices",
                  method="POST", headers=headers, data=body)
# Non-2xx responses raise HTTPError. Do not retry writes with a new key.
with build_opener(NoRedirect()).open(request, timeout=30) as response:
    print(json.load(response))