Unverified50% confidenceFactExact time
In the new revision of MCP, each request carries its own protocol version, client identity, and capability information via the _meta field.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/14/2026
First Seen
Valid until: 1/12/2027
Sources
Related Entities
Related Claims
UnverifiedExisting MCP servers that rely on the initialize handshake or session headers need to adapt to the new _meta request structure and the server/discover call.76% similarUnverifiedMCP握手流程中Client发送initialize请求附带协议版本（如2024-11-05、2025-03-26）和可选能力列表，Server选择双方共同支持的最高版本回应74% similarUnverifiedMCP客户端和服务器之间的关键消息类型包括list_tools_request/list_tools_result和call_tool_request/call_tool_result71% similarUnverifiedThe new revision of MCP adds a server/discover call, allowing clients to learn in advance what capabilities the server has.69% similarUnverified开发者通过在MCP工具定义中添加meta.ui.resourceUri字段指向HTML地址，即可将普通工具变为MCP App69% similar
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