Unverified50% confidenceFactExact time
The 2026-07-28 version of the MCP spec removes ping and logging/setLevel, with the log level instead passed via the request's _meta.
1
Sources
50%
Confidence
Long-term
Relevance
10/18/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedThe 2026-07-28 version of the MCP specification marks Roots, Sampling, Logging, the old HTTP+SSE transport, and dynamic client registration as deprecated.70% similarUnverifiedThe Fetch MCP server by default rejects private, loopback, and link-local addresses (including the cloud metadata endpoint 169.254.169.254), and re-checks the target IP on every redirect hop.66% similarUnverifiedLocal (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.64% similarUnverifiedIn the new revision of MCP, each request carries its own protocol version, client identity, and capability information via the _meta field.64% similarUnverifiedIn the 2026-07-28 revision, MCP removed the initialization handshake and protocol-level sessions, changing to a request-response model closer to stateless.62% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/1062974API
curl https://kongchang.com/api/v1/knowledge/claims/1062974MCP
get_claim(id=1062974)