Ledger launches open-source Agent Stack to gate AI wallet actions behind hardware approval
The toolkit lets agents read and prepare transactions, but execution still requires physical confirmation on a Ledger device.
Start hereWallet “types” mainly differ by where the private key lives and what you expose when you sign transactions and dapp approvals.

ERC-4337 routes wallet actions through UserOperations, bundlers, and EntryPoint, creating a parallel inclusion and fee market to normal Ethereum transactions.

They replace a single seed phrase with either off-chain threshold signing via MPC or on-chain recovery rules in a smart contract wallet.

A multisig wallet executes transactions only after a preset threshold of signers approves, turning key custody into an explicit approval pipeline.

MPC wallets split signing authority into key shares so m-of-n approvers can produce one normal on-chain signature without reconstructing a full private key.

A hardware wallet keeps private keys off your laptop or phone by signing transactions inside the device and showing the final details on a trusted screen.
The toolkit lets agents read and prepare transactions, but execution still requires physical confirmation on a Ledger device.