# Prepare order (create quote)

Creates quote from NSPK QR code.
Quote TTL is short-lived (30 seconds in current implementation).

Endpoint: POST /orders/prepare
Version: 1.0.0
Security: apiKeyAuth

## Request fields (application/json):

  - `qrCode` (string, required)
    NSPK QR payload or URL

  - `externalOrderId` (string)

## Response 201 fields (application/json):

  - `id` (string, required)

  - `amountRub` (number, required)

  - `amountUsdt` (number, required)

  - `rate` (number, required)
    RUB/USDT rate used for conversion

  - `expiresAt` (string, required)

  - `isBalanceSufficient` (boolean, required)

  - `merchantName` (string,null)

## Response 400 fields (application/json):

  - `statusCode` (integer)
    Example: 400

  - `message` (any)

  - `error` (string)
    Example: "Bad Request"

## Response 401 fields (application/json):

  - `statusCode` (integer)
    Example: 400

  - `message` (any)

  - `error` (string)
    Example: "Bad Request"