Policy Modes

The Virtual Signer supports the following policy execution modes:

"Always Approve" mode Used mostly for testing. The virtual signer will automatically approve and co-sign all incoming request.
Approval with Smart Contracts Using the UI, a transaction policy can be deployed in the form of a smart contract. Your virtual signer will query this transaction policy to determine whether to approve or reject a transaction. Smart contract transaction policies tutorial.
Approval with API Your virtual signer will call your API which can implement your own approve/reject off-chain policies. REST API tutorial.