The Snappy Checkout API offers a basic set of calls to manage payments and subscriptions. Calls must be made via an HTTP POST request to https://www.SnappyCheckout.com/api/v1/. JSON will be returned in all HTTP POST responses. All values must be HTML encoded in HTTP POST requests. For example, "john@aol.com" must be encoded as "john%40aol%2Ecom".
When an API method fails, the response will return a success of "false". Also, the error_code will indicate what failed.

The following error codes can be returned:

• invalid_method: The called API method does not exist.
• invalid_parameters: An invalid key-value pair was passed in the HTTP POST request.
• invalid_key: An invalid Snappy Checkout API key was passed in the HTTP POST request. Check the Account --> API section of the Snappy Checkout admin to verify that you're using the correct API key.
• api_error: An error occurred within the Snappy Checkout API. Contact support@snappycheckout.com if you need help resolving this issue.

Example response showing that an invalid API method was called:

Call this method to get a list of all products.

Required key-value pairs:

• Method: The name of the API method to call. The value must be "GetProducts".
• Key: Your Snappy Checkout API key. You can find your API key in the Account --> API section of the Snappy Checkout admin. You should never expose your API key in any public website's client-side code or anywhere else where it can be publicly viewed.

Example HTTP POST request to retrieve a list of all products:


Example response:

Call this method to get the quantity available for products that have a limited quantity.

Required key-value pairs:

• Method: The name of the API method to call. The value must be "GetProductQuantity".
• Key: Your Snappy Checkout API key. You can find your API key in the Account --> API section of the Snappy Checkout admin. You should never expose your API key in any public website's client-side code or anywhere else where it can be publicly viewed.
• Id: The id of the product from the "Products" section of your Snappy Checkout account. Separate multiple product ids with a comma.

Example HTTP POST request to retrieve a product quantity:


Example response:

Call this method to verify that a payment exists in your Snappy Checkout account. This is most commonly used to verify a payment after receiving a Snappy Checkout "Payment Received URL" webhook.

Required key-value pairs:

• Method: The name of the API method to call. The value must be "ValidatePayment".
• Key: Your Snappy Checkout API key. You can find your API key in the Account --> API section of the Snappy Checkout admin. You should never expose your API key in any public website's client-side code or anywhere else where it can be publicly viewed.
• Id: The unique payment id that is generated by Stripe/PayPal. This is the "PaymentId" value that is passed by the Snappy Checkout "Payment Received URL" webhook.
• Email: The customer's email address. This is the "CustomerEmail" value that is passed by the Snappy Checkout "Payment Received URL" webhook.

Optional key-value pairs:

• Amount: The amount of the item purchased. This is the "PaymentTotal" value that is passed by the Snappy Checkout "Payment Received URL" webhook.

Example HTTP POST request to check if a payment exists:


Example response showing the payment does exist:


Example response showing the payment does not exist:

Call this method to verify that a subscription exists for the passed product id and customer email address.

Required key-value pairs:

• Method: The name of the API method to call. The value must be "ValidateSubscription".
• Key: Your Snappy Checkout API key. You can find your API key in the Account --> API section of the Snappy Checkout admin. You should never expose your API key in any public website's client-side code or anywhere else where it can be publicly viewed.
• Id: The subscription product id. When adding a product in the Products section of the Snappy Checkout admin, this is the value in the "Product ID" text box.
• Email: The customer's email address.

Example HTTP POST request to check if a subscription exists:


Example response showing the subscription does exist:


Example response showing the subscription does not exist:

Call this method to cancel an existing subscription.

Required key-value pairs:

• Method: The name of the API method to call. The value must be "CancelSubscription".
• Key: Your Snappy Checkout API key. You can find your API key in the Account --> API section of the Snappy Checkout admin. You should never expose your API key in any public website's client-side code or anywhere else where it can be publicly viewed.
• Id: The subscription product id. When adding a product in the Products section of the Snappy Checkout admin, this is the value in the "Product ID" text box.
• Email: The customer's email address.

Example HTTP POST request to cancel a subscription:


Example response showing the subscription was cancelled:


Example response showing the subscription could not be cancelled: