# Create a Braintree buy (one-off)

Uses the payment info captured by the braintree drop-in UI and encoded in the payment nonce to create a braintree customer and issue a one-off payment.
When braintree responds successfully, the logged-in user will be granted all entitlements in the product's associated bundle.

Endpoint: POST /blaize/payment/braintree/buy
Version: 2025-07-30
Security: CookieBlaizeSession, JwtQuery, JwtHeaderXBlaizeJwt, JwtHeaderXZephrJwt, JwtBearer, JwtCookie

## Header parameters:

  - `cookie` (string)
    The session cookie.
    Example: "`blaize_session=...` (string)"

## Request fields (application/json):

  - `product_id` (string, required)
    Product Id/slug
    Example: "lifetime-membership"

  - `price_point_id` (string, required)
    Price Point Id/slug
    Example: "gold-package"

  - `payment_nonce` (string, required)
    Payment method nonce from Braintree drop-in UI.
    Example: "eyJ2ZXmsaW5nQW...(lots more random-looking characters)...dyZWmVubW8iOiJvZmYifQ=="

## Response 200 fields (application/json):

  - `grant_id` (string)
    New grant of product bundle to user.
    Example: "aa583cb8-51d1-4bd9-9ec7-3a43796ef8e5"


## Response 400 fields

## Response 401 fields

## Response 404 fields