AI agents can prepare a transaction. They shouldn’t be the one to approve it.
The Device Management Kit (DMK) is the entry point for building with Ledger devices. It’s modular by design: the foundation that transports and signers build on top of — and it gives your application everything it needs to talk to a Ledger device:
Discover and connect over USB (WebHID) or BLE (WebBLE)
Observe the state of a connected device
Send a single APDU, a predefined command, or a full sequence of commands with device actions
Manage and refresh device sessions
In this video, an AI agent turns a plain-English instruction into an Ethereum transaction — but the signature only happens on the hardware, with the user verifying exactly what they’re approving on the device screen. The agent proposes; the device confirms. That hardware-enforced approval is the layer agentic systems need when real value is on the line.
Start building with the DMK in the Ledger Developer Portal.
Build free from compromise → https://developers.ledger.com/docs/device-interaction/integration/how_to/dmk
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