A payment receipt can prove money moved without proving the work was useful.

Sui's October 28 agent-permissions explainer makes that limitation explicit. It describes budgets tied to approved apps, spending caps and expiry times, with Sui Agent Payments demonstrating the approach on testnet.

For $SUI watchers, enforceable spending rules are a concrete design goal. But a completed transaction won't establish that research was good or a package arrived. Those outcomes still need evidence beyond the payment record.