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Authorize.net takes card payments in its own card window over your checkout. You need an Authorize.net account and its Merchant Interface, with an Administrator login for the last step.

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In Authorize.net

  1. In the Merchant Interface, open Account, then Settings, Security Settings, General Security Settings, and API Credentials and Keys. Your API Login ID is shown there. Copy it.
  2. On the same page, choose New Transaction Key and press Submit. Authorize.net asks for a PIN it sends you. Copy the key it shows: it is not shown again.
  3. Do the same with New Signature Key. Shoply uses it to set up the webhook that tells it about voids, refunds and reviews, which Authorize.net sends only once a Signature Key exists.
  4. Back in General Security Settings, open Manage Public Client Key. If there is none, make one: Authorize.net asks your security question. You paste nothing from here. Shoply reads it itself, and its card window needs it.
A new Transaction Key or Signature Key replaces the old one after 24 hours, unless you tick the box to disable the old one at once. If other software uses your current keys, it stops working when the old key does. Credentials from an Authorize.net sandbox account work the same way, and Shoply works out which kind they are.

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In Shoply

  1. In your Shoply dashboard, open Settings, then Payment Methods.
  2. Under Add a Payment Method, find Authorize.net and press Connect.
  3. Paste the API Login ID, the Transaction Key and the Signature Key.
  4. Press Test Connection to try what you pasted, then Connect App.
Saving is refused for an account with no Public Client Key, and says where to make one. If you sell subscriptions, a card a subscription is bought with is kept as a customer profile in your Authorize.net account, one for each order, and each renewal is charged to it on its day. A profile your account cannot make keeps nothing: that subscription renews by email, and the payment itself goes through as any other. How Authorize.net works once it is connected, at the checkout and on an order, is in Payment methods.