curl --request POST \
  --url https://v1.api.altostrat.io/workspaces/{workspaceId}/billing-accounts/{billingAccountId}/invoices/preview \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "subscription_id": "sub_a1b2c3d4e5f6g7h8",
  "items": [
    {
      "product_type": "locations",
      "quantity": 15,
      "interval": "month"
    }
  ],
  "cancel_subscription": false
}
'

import requests

url = "https://v1.api.altostrat.io/workspaces/{workspaceId}/billing-accounts/{billingAccountId}/invoices/preview"

payload = {
    "subscription_id": "sub_a1b2c3d4e5f6g7h8",
    "items": [
        {
            "product_type": "locations",
            "quantity": 15,
            "interval": "month"
        }
    ],
    "cancel_subscription": False
}
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({
    subscription_id: 'sub_a1b2c3d4e5f6g7h8',
    items: [{product_type: 'locations', quantity: 15, interval: 'month'}],
    cancel_subscription: false
  })
};

fetch('https://v1.api.altostrat.io/workspaces/{workspaceId}/billing-accounts/{billingAccountId}/invoices/preview', 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://v1.api.altostrat.io/workspaces/{workspaceId}/billing-accounts/{billingAccountId}/invoices/preview",
  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([
    'subscription_id' => 'sub_a1b2c3d4e5f6g7h8',
    'items' => [
        [
                'product_type' => 'locations',
                'quantity' => 15,
                'interval' => 'month'
        ]
    ],
    'cancel_subscription' => false
  ]),
  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://v1.api.altostrat.io/workspaces/{workspaceId}/billing-accounts/{billingAccountId}/invoices/preview"

	payload := strings.NewReader("{\n  \"subscription_id\": \"sub_a1b2c3d4e5f6g7h8\",\n  \"items\": [\n    {\n      \"product_type\": \"locations\",\n      \"quantity\": 15,\n      \"interval\": \"month\"\n    }\n  ],\n  \"cancel_subscription\": false\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://v1.api.altostrat.io/workspaces/{workspaceId}/billing-accounts/{billingAccountId}/invoices/preview")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"subscription_id\": \"sub_a1b2c3d4e5f6g7h8\",\n  \"items\": [\n    {\n      \"product_type\": \"locations\",\n      \"quantity\": 15,\n      \"interval\": \"month\"\n    }\n  ],\n  \"cancel_subscription\": false\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://v1.api.altostrat.io/workspaces/{workspaceId}/billing-accounts/{billingAccountId}/invoices/preview")

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  \"subscription_id\": \"sub_a1b2c3d4e5f6g7h8\",\n  \"items\": [\n    {\n      \"product_type\": \"locations\",\n      \"quantity\": 15,\n      \"interval\": \"month\"\n    }\n  ],\n  \"cancel_subscription\": false\n}"

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

{
  "id": "in_1Kb...",
  "customer_id": "cus_...",
  "status": "paid",
  "amount_due": 999,
  "amount_paid": 999,
  "currency": "usd",
  "created_at": "2025-10-29T00:40:06.000000Z",
  "subtotal": 1099,
  "total": 999,
  "tax": 0,
  "discount_amount": 100,
  "discount_names": [
    "10% Off Coupon"
  ],
  "lines": [
    {
      "id": "il_1Kb...",
      "description": "10 × Locations",
      "amount": 1000,
      "currency": "usd",
      "quantity": 10,
      "price_id": "price_...",
      "unit_amount": 100,
      "product_name": "Locations"
    }
  ],
  "due_date": null,
  "hosted_invoice_url": "https://invoice.stripe.com/...",
  "invoice_pdf": "https://pay.stripe.com/...",
  "number": "AB123-001"
}

{
  "type": "invalid_request_error",
  "code": "parameter_invalid",
  "message": "The 'name' parameter cannot exceed 50 characters.",
  "doc_url": "https://docs.altostrat.io/errors/parameter_invalid"
}

{
  "type": "unprocessable_entity",
  "code": "product_not_available",
  "message": "The product 'sso_monthly' is not available for invoice preview. Please ensure you have a price with this lookup key in Stripe.",
  "doc_url": "https://docs.altostrat.io/errors/product_not_available"
}

{
  "type": "api_error",
  "code": "internal_server_error",
  "message": "An internal server error occurred. Please try again later.",
  "doc_url": "https://docs.altostrat.io/errors/internal_server_error"
}