curl --request POST \
  --url https://api.teamfollowup.ai/api/billing/purchases \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "planCode": "GOLD"
}'

import requests

url = "https://api.teamfollowup.ai/api/billing/purchases"

payload = { "planCode": "GOLD" }
headers = {
    "Idempotency-Key": "<idempotency-key>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'Idempotency-Key': '<idempotency-key>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({planCode: 'GOLD'})
};

fetch('https://api.teamfollowup.ai/api/billing/purchases', 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.teamfollowup.ai/api/billing/purchases",
  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([
    'planCode' => 'GOLD'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "Idempotency-Key: <idempotency-key>"
  ],
]);

$response = curl_exec($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.teamfollowup.ai/api/billing/purchases"

	payload := strings.NewReader("{\n  \"planCode\": \"GOLD\"\n}")

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

	req.Header.Add("Idempotency-Key", "<idempotency-key>")
	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.teamfollowup.ai/api/billing/purchases")
  .header("Idempotency-Key", "<idempotency-key>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"planCode\": \"GOLD\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.teamfollowup.ai/api/billing/purchases")

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

request = Net::HTTP::Post.new(url)
request["Idempotency-Key"] = '<idempotency-key>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"planCode\": \"GOLD\"\n}"

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

{
  "success": true,
  "data": {
    "status": "PAID",
    "requestNumber": "REQ-1757937600000-a1b2c3",
    "planCode": "GOLD",
    "amountUSD": 340,
    "minutes": 1000
  }
}

{
  "success": true,
  "data": {
    "status": "PENDING_APPROVAL",
    "requestNumber": "REQ-1757937600000-d4e5f6",
    "planCode": "GOLD",
    "amountUSD": 340,
    "minutes": 1000
  }
}

{
  "success": false,
  "error": "IDEMPOTENCY_KEY_REQUIRED",
  "message": "This operation can charge a card, so it needs an Idempotency-Key header. Send a unique value per purchase and reuse it only to retry that same purchase."
}

{
  "success": false,
  "error": "Unauthorized"
}

{
  "success": false,
  "error": "CARD_DECLINED",
  "message": "Your card was declined.",
  "requestNumber": "REQ-1757937600000-a1b2c3"
}

{
  "success": false,
  "error": "InsufficientScope",
  "message": "This API key does not have the required scope.",
  "requiredScope": "billing:charge"
}

{
  "success": false,
  "error": "PLAN_NOT_FOUND",
  "message": "Plan DIAMOND is not available to this agency."
}

{
  "success": false,
  "error": "AUTO_RECHARGE_NOT_ENABLED",
  "message": "Turn on auto-recharge before creating an automatic plan request."
}

{
  "success": false,
  "error": "TooManyRequests"
}

{
  "success": false,
  "error": "InternalError",
  "message": "Could not load the rebilling change."
}

{
  "success": false,
  "error": "PAYMENT_METHOD_PROVIDER_UNAVAILABLE",
  "message": "Stripe could not verify your billing card. Nothing was charged; try again."
}