Verified65% confidenceFactExact time
In the 2026-07-28 revision, MCP removed the initialization handshake and protocol-level sessions, changing to a request-response model closer to stateless.
3
Sources
65%
Confidence
Medium-term (~90 days)
Relevance
10/14/2026
First Seen
Valid until: 1/12/2027
Sources
Related Entities
Related Claims
UnverifiedThe latest MCP specification update removes three stateful mechanisms—Session, initialize handshake, and stream resumability—shifting to a stateless architecture.77% similarUnverifiedIn the July 28, 2026 MCP specification revision, the initialize handshake and session ID were removed, each request carries its own version and capability information in the _meta field, server discover became optional; any request can land on any server instance, with just an ordinary load balancer in front.75% 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73% similarUnverifiedClients and servers written against the old MCP specification will be unable to communicate normally with the new specification, and code paths that rely on session state, handshake flows, or stream resumability may break.72% similarUnverifiedThe wire panel in the demo displays every MCP protocol message, including the initialize handshake (protocol version November 25, 2025), MCP apps extensions, tools list, and tools call.69% similar
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