Agent card
In A2A, a published description of an agent's identity, skills, endpoint and authentication requirements.
In the Agent2Agent protocol, an agent card is a JSON metadata document published by an A2A server that describes the agent's identity, capabilities, skills, service endpoint and authentication requirements. Other agents read the card to decide whether and how to interact with it. A card is a self-description, so for financial use it should be backed by verifiable signals about the operator rather than trusted on its own.
Agent Minute explains this term on 19 November 2026.
Related terms
Agent2Agent protocol (A2A)An open protocol for independent agents to discover each other and exchange tasks, messages and results.A2A taskThe fundamental unit of work in A2A, with a unique ID and a defined lifecycle of states.Know Your Agent (KYA)Checking which agent is acting, who operates it and whom it acts for, before letting it act.Multi-agent systemSeveral agents that divide a task between them and exchange work through a protocol.