Unverified50% confidenceFactExact time
A2A achieves self-declaration and discovery of agent capabilities through the "Agent Card" mechanism, where each agent can expose a standardized .well-known/agent.json endpoint.
1
Sources
50%
Confidence
Long-term
Relevance
9/12/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedIn the A2A protocol, each agent publishes an Agent Card at the fixed server path `/.well-known/agent`, containing information such as Name, Skills, and Auth.79% similarUnverifiedAn Agent Card is a standardized business card for agents in the A2A protocol, declaring capabilities, input/output schemas, authentication methods, and other information in JSON format, without exposing the internal model and tool implementations.76% similarUnverifiedA2A协议基于HTTP/SSE构建，引入了Agent Card概念，每个Agent发布描述自身能力的元数据卡片72% similarVerifiedA2A introduces the concept of an Agent Card, where each Agent publishes a structured capability declaration document describing the task types it can handle, input/output formats, and authentication requirements.72% similarUnverified在AI Agent关键决策节点保留人在回路（HITL）确认机制对平衡自主性与可控性至关重要70% similar
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