Merchant Tools

Simple Buttons

Simple Buttons
If you need a checkout with more options such as buyer selectable quantity, multiple item shipping, etc. check out our Advanced Buttons.

The buttons are implmented as standard HTML POST forms. The fields available are documented below.
Field NameDescriptionRequired?Length
Limit
Main Fields
cmdThis should always be set to '_pay_simple'.YesN/A
resetThis tells the server to delete any cached button data for the user.
Set the value to 1
Yes1
merchantYour merchant ID (you can find this on the My Account page).YesN/A
Item/Payment Description Fields
currencyThe currency of the payment (BTC, LTC, USD, EUR, etc.).
Values supported: Any crypto or fiat currency on the Supported Coins page.
Note we in no way process any fiat currencies, they are simply convenience values so you don't have to convert to BTC or another coin yourself.
Yes3
amountfThe amount (in the currency chosen) of the payment.YesN/A
item_nameThe name of the item being purchased.Yes128
item_descDescription of the item being purchased.No128
item_numberThis is a passthru variable for your own use. [not visible to buyer]No128
invoiceThis is a passthru variable for your own use. [not visible to buyer]No128
customThis is a 2nd passthru variable for your own use. [not visible to buyer]No128
allow_currenciesCurrency codes separated with a comma of coins you will accept. This is used to further restrict the coin selection from your list of enabled coins; for example if you are doing your own exchange rates and want to limit checkout to a user selected currency.
Example: BTC,LTC
No255
on11st option name. This lets you pass through a buyer option like size or color.No
(unless ov1 set)
128
ov11st option value. This would be the buyer's selection such as small, large, red, white.No128
on22nd option name. This lets you pass through a buyer option like size or color.No
(unless ov2 set)
128
ov22nd option value. This would be the buyer's selection such as small, large, red, white.No128
Shipping Fields
want_shipping1 = Want buyer's shipping information.
0 = Don't want buyer's shipping information. (default)
No1
shippingfCost of shipping the item.NoN/A
taxfAny tax to charge.NoN/A
allow_ship_countriesISO 3166 2 digit country codes separated with a comma of countries you will ship to. The will deny transactions if the shipping address is not in one of these countries.
Example: US,CA,GB
No255
Miscellaneous Fields
ipn_urlSets an IPN URL.
If not set or blank defaults to the IPN URL in your settings.
No255
success_urlSets a URL to go to if the buyer does complete checkout.No255
cancel_urlSets a URL to go to if the buyer decides to not complete checkout.No255
langAutomatically set the checkout language to this language code. For a list of supported codes check this page.No16
Buyer Information
These fields can be used to pre-populate forms with any information you already know about your buyer.
first_nameBuyer's first name.No32
last_nameBuyer's last name.No32
emailBuyer's email address.No128
address1Street / address line 1No128
address2Street / address line 2No128
cityCityNo64
stateState / ProvinceNo64
zipZip / Postal CodeNo32
countryCountry of Residence
This uses 2 digit ISO 3166 country codes.
No2
phonePhone NumberNo32
Feel free to check out our example buttons.