Buy products with
a single API call.

I want to integrate the AI-Market API into my project.

API base URL: {BASE}
Auth: send my key on EVERY request in the header  ->  X-API-Key: <MY_KEY>
(I get the key from the AI-Market Telegram bot: tap "🔑 API" -> Generate.)

Endpoints:
- GET  /balance   -> { "balance": number, "currency": "USDT" }   (my wallet balance)
- GET  /products  -> { "products": [ { "id", "name", "price", "stock", "in_stock" } ] }
- POST /purchase  -> buy a product using my wallet balance
      body:   { "product_id": "<id from /products>", "quantity": 1 }
      header: Idempotency-Key: <any-unique-id>   (optional; makes retries safe, never double-charges)
      success -> { "success": true, "order_id", "codes": [...], "balance_remaining" }

Rules to follow:
- Send the X-API-Key header on every request.
- Branch on the JSON "code" field for errors:
  NO_KEY / INVALID_KEY (401), VALIDATION (400), INSUFFICIENT_BALANCE (402),
  FORBIDDEN (403), PRODUCT_NOT_FOUND (404), OUT_OF_STOCK (409),
  RATE_LIMITED (429 -> wait "retry_after_seconds" then retry).
- Rate limit: max 20 requests per minute.
- A purchase only works if my wallet has enough balance (I top up inside the bot).

Now please build this for me:
>>> DESCRIBE WHAT YOU WANT, e.g. "a Node.js script that lists products and lets me buy one by id" <<<

Use my API key: >>> PASTE_YOUR_API_KEY_HERE <<<

# 1) Check your balance
curl -s "{BASE}/balance" \
  -H "X-API-Key: YOUR_API_KEY"

# 2) List products
curl -s "{BASE}/products" \
  -H "X-API-Key: YOUR_API_KEY"

# 3) Buy 1 unit (Idempotency-Key makes retries safe)
curl -s -X POST "{BASE}/purchase" \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: order-001" \
  -d '{"product_id":"002","quantity":1}'

const BASE = "{BASE}";
const KEY  = "YOUR_API_KEY";
const headers = { "X-API-Key": KEY, "Content-Type": "application/json" };

// 1) Balance
const balance = await fetch(`${BASE}/balance`, { headers }).then(r => r.json());
console.log("Balance:", balance);

// 2) Products
const { products } = await fetch(`${BASE}/products`, { headers }).then(r => r.json());

// 3) Purchase (Idempotency-Key makes retries safe)
const res = await fetch(`${BASE}/purchase`, {
  method: "POST",
  headers: { ...headers, "Idempotency-Key": "order-001" },
  body: JSON.stringify({ product_id: "002", quantity: 1 }),
});
const order = await res.json();
if (order.success) console.log("Codes:", order.codes);
else console.error("Failed:", order.code, order.error);

import requests

BASE = "{BASE}"
KEY  = "YOUR_API_KEY"
headers = {"X-API-Key": KEY, "Content-Type": "application/json"}

# 1) Balance
print(requests.get(f"{BASE}/balance", headers=headers).json())

# 2) Products
products = requests.get(f"{BASE}/products", headers=headers).json()["products"]

# 3) Purchase (Idempotency-Key makes retries safe)
res = requests.post(
    f"{BASE}/purchase",
    headers={**headers, "Idempotency-Key": "order-001"},
    json={"product_id": "002", "quantity": 1},
).json()

print(res["codes"] if res.get("success") else res)