This website allows you to save and load decks in the Super Auto Pets test server.

To use it enter your login info for the SAP test (you need a seperate account for the test server, it is seperate from the live version). Once you login, a list of your decks should appear. Click the Copy to Clipboard button to copy the deck code. To load a deck, paste the deck code into the box at the bottom, and click Add Deck.

All requests are sent directly from your device to the Super Auto Pets server; using this site does not give me access to your account.