Unverified60% confidenceSolutionExact time
In the OAuth flow, the MCP server returns a 401 Unauthorized response to requests without a valid token, along with a login URL pointing to the authorization server.
2
Sources
60%
Confidence
Long-term
Relevance
9/27/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedBoth OAuth and OpenID Connect assume that the MCP client has already been registered with the server or authorization server.72% similarUnverifiedMCP HTTP Server can be combined with OAuth 2.0 authentication to implement fine-grained permission control for multi-tenant and team collaboration scenarios69% similarUnverifiedMCP fixes include: progress notifications for background tool calls are no longer dropped, transient HTTP 404s returned by stateless remote MCP servers no longer render the entire session unusable, and stdio MCP servers that have not finished starting up are now properly cleaned up when the session ends.65% similar
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