Ledger shipped Ledger Agent Stack today — an open-source toolkit that lets AI agents read your crypto wallet, analyze your portfolio, and queue up transactions, while physically preventing any of that from executing unless you press a button on a physical Ledger device. For anyone with crypto holdings who has been watching AI agent wallets proliferate without a clear answer to the question “what stops a compromised agent from draining this?” — today’s release is the first production-grade answer to that question from a hardware security company.

The principle is three words Ledger has been repeating since its April AI roadmap announcement: “Agents propose. Humans approve.” What makes today’s launch different from that slogan is that…