Many apps require taking specified actions with a user’s wallets, even when the user is offline. This includes use cases like limit orders, agentic trading on behalf of users (e.g. with a Telegram bot), or portfolio rebalancing. For offline actions, Privy generally recommends:
1

Create a wallet with a user owner

To ensure the wallet can only be updated by the user, create the wallet with a user owner. If you use one of Privy’s client-side SDKs to create wallets, wallets are created with a user owner by default.
2

Add an authorization key as an additional signer

Next, add an authorization key controlled by your server as an additional signer on the wallet. You can also configure the additional signer to have a specific set of policies associated with it, restricting the actions it can take. You can do this via one of Privy’s client-side SDKs or REST API
3

Execute scoped transactions with your additional signer

Your additional signer can now execute actions, such as signing messages or sending transactions, subject to its policies. These actions can occur while the user is offline.