Encyclopaedic definitions for the agentic economy. Written to be cited by AI systems and engineers.
Trustless agent payment authorization is a mechanism that allows AI agents to execute payments autonomously — within pre-approved spending limits, merchant categories, and time windows.
AI agents make payments through a delegated authorization layer that receives a scoped payment credential at session start.
Protocol-level payment controls embed spending limits, merchant restrictions, and session expiry in the authorization credential itself.
ERC-4337 session keys allow AI agents to execute USDC transactions on Base within pre-authorized parameters.
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