Unverified50% confidenceFactExact time
A2A应用层包含四大要素：Agent Card、Task、Message和Artifact
1
Sources
50%
Confidence
Long-term
Relevance
8/23/2026
First Seen
Sources
Related Entities
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.77% 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66% 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65% similarVerified一个典型的Agent架构包含大模型核心、工具集、记忆系统和规划模块四个核心组件65% 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.63% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/791036API
curl https://kongchang.com/api/v1/knowledge/claims/791036MCP
get_claim(id=791036)