Commerce has always depended on trust infrastructure. Signatures bind people to agreements. Payment networks establish rules for settlement. Reputation lets strangers transact without rebuilding confidence from zero.
Autonomous systems inherit all of those needs and add a new one: the actor making the decision may be software operating across accounts, vendors, and jurisdictions at machine speed. A credential that says what an agent is cannot, by itself, say what that agent may do right now.
Identity is only the first layer
A useful machine identity must resolve to a responsible organization or person, describe the software and environment involved, and be capable of rotation or revocation. But identity answers only who is acting. Commerce also needs a current, scoped statement of authority.
Authority is contextual. An agent may be allowed to reorder inventory but not change suppliers, negotiate within a range but not accept new liability, or move funds during business hours but not after a risk signal changes. These limits should travel with the action rather than live in a policy document no counterparty can see.
Evidence must move with value
The next layer is evidence: the inputs, policy version, approvals, and market conditions that produced a decision. This record does not need to reveal private reasoning or proprietary data. It does need to be sufficient for the parties to verify that the action was valid.
Today, evidence is often reconstructed after something goes wrong. Autonomous commerce will make that model too slow and too expensive. The receipt for a decision should be created at the same time as the transaction and linked to it from the start.
The transaction and the reason for the transaction should arrive together.
Recourse completes the system
No autonomous system will be correct in every edge case. Trust therefore cannot mean perfect prediction. It means the market knows what happens when a decision is challenged: who can pause an agent, how an action is unwound, which evidence is reviewed, and where loss ultimately sits.
This is why identity, authority, evidence, and recourse form a stack. Remove one and the others carry more weight than they can support. Combine them and autonomy becomes legible enough for companies to delegate meaningful work.
We expect the strongest infrastructure companies in machine commerce to make this stack feel less like compliance and more like acceleration. Clear permissions reduce negotiation. Portable evidence reduces reconciliation. Predictable recourse lets counterparties take risks they would otherwise avoid. Trust is not the brake on autonomous markets. Properly designed, it is the thing that lets them move.