RoboSaver is a smart contract module that can be installed on the Safe smart account that underlays every Gnosis Pay card. It tracks changes in the card's balance every block, and thus determines if there is a surplus or deficit of EURe tokens.

When necessary, it automatically deposits or withdraws these tokens via Balancer and Aura. This way RoboSaver maintains enough spendable tokens on the card, all the while earning rewards with the rest.

We successfully concluded tests in production with our latest v0.1.0 release this week. By buying a cup of coffee, we successfully triggered a withdrawal from Aura: https://gnosisscan.io/tx/0x155499dd64a0340129144ce0e47e2549817ad72e95d5d2836bbbf7acbb0750dc. This topped up the card to its threshold balance, while keeping the rest of the funds staked in Aura earning rewards. Similar tests were conducted for depositing, staking, closing the position, etc.

Installing the module is still a bit cumbersome, but a one-click solution is already under way. Other than that, there are lots of ideas for handling rewards, different currencies, UI integrations, etc.

Stay tuned!