Designing an Agent Wallet

An agent wallet is a payment account designed to be operated by software rather than a person clicking through a UI — which sounds like a small difference and turns out to require rethinking almost every assumption a normal wallet makes.

Assumption 1: a human will notice something wrong

A normal wallet leans on the person glancing at a confirmation screen as a safety check. An agent wallet cannot assume that — the "confirmation screen" is another piece of software, which can be wrong, manipulated, or simply following flawed instructions with total confidence. Safety has to be enforced structurally: hard spend caps, category allow-lists, and mandatory human approval above a threshold, not a dialog box the agent itself can click through.

Assumption 2: one login, one owner

A person has one wallet, mostly. An agent might be one of many agents acting for the same owner, or might act for multiple owners across different tasks. Agent wallets need scoped, revocable, per-task credentials — not one shared key — so that a single compromised agent doesn't expose everything.

Assumption 3: transactions are infrequent enough to review individually

A person might make a handful of payments a day. An agent might attempt thousands of small transactions in a session. Reviewing each individually is impossible; the design instead has to shift to policy review (what categories, what limits, what merchants) plus statistical monitoring (does this session's behavior look anomalous), rather than per-transaction human sign-off.

What "good" looks like today

The strongest current designs combine three things: a spend policy enforced outside the agent's own control, cryptographically scoped credentials tied to a specific task or session, and a full audit trail a human can review after the fact. None of that is exotic — it's closer to how corporate procurement systems already work than to any new blockchain primitive.