Glossary

The vocabulary of agent trust, defined answer-first so you and your tools can quote it.

Know Your Agent: Know Your Agent, or KYA, is the identity check that confirms an agent is real and tied to a known operator. AgentFide verifies the agent's signed credential, such as a signed A2A agent card, rather than trusting a claim.
assess call: The assess call is the single request an agent makes to AgentFide before a transaction. It returns an allow, review, or deny decision built from four checks: identity, authority, reputation, and recourse.
Four check trust stack: The four check trust stack is the set of checks AgentFide runs on every assess call: identity, authority, reputation, and recourse. Together they answer who, allowed, trusted, and covered.
Agent reputation: Agent reputation is a transparent, explainable score built from an agent's real track record, such as whether it paid, delivered, stayed in bounds, and avoided disputes. It reflects real behavior and cannot be bought.
AP2 mandate: An AP2 mandate is a scoped grant of authority that says what an agent may do on behalf of a principal, including a limit, a currency, and an expiry. AgentFide's authority check validates a spend against the mandate.
Agent recourse: Agent recourse is the protection that lets you undo a bad transaction. AgentFide can hold funds in escrow and roll back a transaction, so a single mistake is recoverable rather than final.
Agent Rewind: Agent Rewind is AgentFide's undo guarantee for covered transactions. When a deal goes wrong, Agent Rewind reverses it and returns funds rather than leaving you with a loss.
A2A agent card: An A2A agent card is a signed credential that identifies an agent and the operator behind it. AgentFide fetches and verifies the card during the identity check.
Agent economy: The agent economy is commerce where AI agents pay, buy, hire, and transact on behalf of people and businesses. It needs a trust layer because deals happen faster than humans can review.