Unverified60% confidenceFactExact time
The authentication scheme recommended by the official MCP specification is OAuth 2.1 with PKCE.
2
Sources
60%
Confidence
Long-term
Relevance
9/27/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedThe MCP server has been updated to version 2.0, introducing the Mcp-Session-Id header to identify client sessions and adopting OAuth 2.1 as the recommended authentication framework.78% similarUnverifiedThe MCP 2.0 specification recommends using OAuth 2.1 rather than 2.0, because version 2.1 mandates security enhancements such as PKCE, effectively preventing authorization code interception attacks.77% similarVerifiedMCP's permission model draws on the OAuth 2.0 authorization code flow, requiring explicit user authorization for tool invocation.73% similarPartially VerifiedMCP对外公网服务支持基于OAuth 2.1授权框架和JWT的Token认证机制72% similar
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