Unverified90% confidenceFactTime unknown
A2A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
1
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90%
Confidence
Long-term
Relevance
6/1/2026
First Seen
Sources
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Related Claims
VerifiedA2A 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.80% similarUnverifiedIn 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.78% similarUnverifiedA2A协议通过Agent Card让每个Agent暴露能力清单，实现Agent之间零代码、零API契约的即插即用连接73% similarUnverifiedAgent Card是A2A协议中智能体的标准化名片，以JSON格式声明能力、输入输出模式、认证方式等，但不暴露内部模型和工具实现71% similarUnverifiedA2A协议的核心设计原则是Agent之间基于声明的能力来协作，而不是互相检查对方的内部实现67% similar
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