A small coin. A big idea.

Software is starting to act. Agents research, plan, write code, negotiate and operate services — and increasingly, the next step in their work costs money: an API call, a dataset, compute, a paid tool built by someone else's agent.

That creates a new and largely unsolved problem: how do you give autonomous software economic authority safely? Handing an agent a credit card is unthinkable. Blocking it from spending entirely wastes what it could do for you.

Quattrino exists to make that middle path real: agents get exactly the authority you choose to grant — bounded by budgets, rules and approvals — and you get complete visibility into every cent they attempt to move.

The name comes from the historical Italian quattrino — a small-denomination coin, worth four denari, that circulated for centuries in parts of Italy, including Tuscany and Florence. Florence in that era became a center of Renaissance commerce: merchants, bankers and new financial networks reshaping how value moved across Europe.

A single quattrino bought very little. That was the point. Commerce at scale wasn't built on rare, enormous transactions — it was built on countless small ones moving repeatedly through increasingly reliable financial infrastructure.

We chose the name because we believe the same pattern is repeating. As agents begin to transact — sometimes for hundreds of dollars, often for pennies or less — those small machine-to-machine payments can add up to a substantial economy. Quattrino is intended to be the infrastructure underneath it.

A note on history: we draw on this era as broad inspiration. Quattrino is not a recreation of Renaissance banking, and we make no claims about specific institutions or families creating or using the coin.

Every generation of financial infrastructure was built to connect people and businesses: coins for markets, banks for merchants, card networks for consumers, online payments for the internet economy.

The next participants are not people. Autonomous software will increasingly buy from, sell to and settle with other software — at machine speed and machine granularity. That demands infrastructure with a different first principle: autonomous actors operating strictly within human-defined authority.

Not a bank for AI. Not unlimited money for agents. A control layer where identity, permission, authorization and audit come before any transaction — so the humans who own the agents remain firmly in charge.