curl --request POST \
  --url https://api.whop.com/api/v1/invoices/{id}/send \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "send_at": "2023-11-07T05:31:56Z"
}
'

import requests

url = "https://api.whop.com/api/v1/invoices/{id}/send"

payload = { "send_at": "2023-11-07T05:31:56Z" }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({send_at: '2023-11-07T05:31:56Z'})
};

fetch('https://api.whop.com/api/v1/invoices/{id}/send', 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.whop.com/api/v1/invoices/{id}/send",
  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([
    'send_at' => '2023-11-07T05:31:56Z'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "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://api.whop.com/api/v1/invoices/{id}/send"

	payload := strings.NewReader("{\n  \"send_at\": \"2023-11-07T05:31:56Z\"\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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.whop.com/api/v1/invoices/{id}/send")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"send_at\": \"2023-11-07T05:31:56Z\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.whop.com/api/v1/invoices/{id}/send")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"send_at\": \"2023-11-07T05:31:56Z\"\n}"

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

{
  "account_id": "biz_xxxxxxxxxxxxxx",
  "amount_due": {
    "amount": "-1234.56",
    "currency": "usd",
    "decimals": 2,
    "display_decimals": 2
  },
  "billing_address": {
    "city": "Austin",
    "country": "US",
    "line1": "1114 Bouldin Ave",
    "line2": "Unit B",
    "name": "Dana Whitfield",
    "postal_code": "78704",
    "state": "TX"
  },
  "buyer_fee_amount": {
    "amount": "-1234.56",
    "currency": "usd",
    "decimals": 2,
    "display_decimals": 2
  },
  "buyer_fee_percentage": 0,
  "checkout_link": "pay_xxxxxxxxxxxxxx.eyJfcmFpbHMiOnsiZGF0YSI6WzEsZmFsc2VdLCJwdXIiOiJSZWNlaXB0XG5jaGVja291dF9tb3VudFxuIn19--xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
  "created_at": "2026-01-01T12:00:00.000Z",
  "customer_name": "Dana",
  "due_at": null,
  "email_address": "marcus@shinetime.example",
  "id": "pay_xxxxxxxxxxxxxx",
  "invoice_prefix": null,
  "line_items": [
    {
      "discount_amount": {
        "amount": "-1234.56",
        "currency": "usd",
        "decimals": 2,
        "display_decimals": 2
      },
      "id": "li_xxxxxxxxxxxxxx",
      "label": "Ceramic Coating Package",
      "plan_id": "plan_xxxxxxxxxxxxxx",
      "product_id": "prod_xxxxxxxxxxxxxx",
      "quantity": 1,
      "subtotal": {
        "amount": "-1234.56",
        "currency": "usd",
        "decimals": 2,
        "display_decimals": 2
      },
      "tax_amount": {
        "amount": "-1234.56",
        "currency": "usd",
        "decimals": 2,
        "display_decimals": 2
      },
      "unit_amount": {
        "amount": "-1234.56",
        "currency": "usd",
        "decimals": 2,
        "display_decimals": 2
      }
    }
  ],
  "mailing_address_id": null,
  "member_id": "mber_xxxxxxxxxxxxxx",
  "metadata": {},
  "number": "#xxxxxxxx",
  "object": "invoice",
  "overdue": false,
  "paid_at": null,
  "payment_method_id": null,
  "recipient_emails": [
    "marcus@shinetime.example"
  ],
  "scheduled_send_at": null,
  "status": "open",
  "subtotal": {
    "amount": "-1234.56",
    "currency": "usd",
    "decimals": 2,
    "display_decimals": 2
  },
  "tax_amount": {
    "amount": "-1234.56",
    "currency": "usd",
    "decimals": 2,
    "display_decimals": 2
  },
  "total": {
    "amount": "-1234.56",
    "currency": "usd",
    "decimals": 2,
    "display_decimals": 2
  },
  "totals_status": "final",
  "updated_at": "2026-01-01T12:00:00.000Z"
}

{
  "error": {
    "message": "account_id is required",
    "type": "bad_request",
    "code": "<string>"
  }
}

{
  "error": {
    "message": "account_id is required",
    "type": "bad_request",
    "code": "<string>"
  }
}

{
  "error": {
    "message": "account_id is required",
    "type": "bad_request",
    "code": "<string>"
  }
}