Unverified50% confidenceFactExact time
Local (stdio) MCP server connections now negotiate protocol version 2026-07-28 by default, covering Bedrock, Vertex, and Foundry, and can revert to the legacy version via MCP_PROTOCOL_NEGOTIATION=legacy.
1
Sources
50%
Confidence
Long-term
Relevance
10/6/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedBedrock, Vertex, Foundry, and installations with telemetry disabled now use the v2 MCP client and MCP 2026-07-28 negotiation mechanism by default.79% similarUnverifiedIn last year's version iterations, MCP added remote connectivity, authorization mechanisms, and the concept of applications.76% similarUnverifiedUnder the old MCP specification, GitHub MCP and many distributed MCP servers could not support elicitation, because it requires cross-server communication to coordinate state and sessions.75% similarUnverifiedThe older version of MCP (1.0) required remote servers to use persistent connections or sticky routing.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74% similar
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