Unverified60% confidenceReleaseExact time
In MCP version 1.1 released by Anthropic in 2025, OAuth 2.1 authorization flows and tool permission scope declarations were introduced.
2
Sources
60%
Confidence
Medium-term (~90 days)
Relevance
7/16/2026
First Seen
Valid until: 10/14/2026
Sources
Related Claims
UnverifiedAnthropic is advancing native OAuth 2.1 support in the MCP protocol.78% similarVerifiedMCP's permission model draws on the OAuth 2.0 authorization code flow, requiring explicit user authorization for tool invocation.75% similarVerifiedAnthropic launched the MCP (Model Context Protocol) in 2024.72% similarUnverifiedThe authentication scheme recommended by the official MCP specification is OAuth 2.1 with PKCE.72% similarVerifiedAnthropic launched MCP (Model Context Protocol) at the end of 2024, an open standard designed to standardize the way AI models interact with external tools and data sources.71% similar
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