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How MCP Authorization Actually Works: OAuth 2.1, Resource Servers, and Resource Indicators
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How MCP Authorization Actually Works: OAuth 2.1, Resource Servers, and Resource Indicators


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How MCP authorization works in the 2026-07-28 spec revision: the 401 challenge, resource metadata, client registration, and RFC 8707 audience binding.

First seen on securityboulevard.com

Jump to article: securityboulevard.com/2026/08/how-mcp-authorization-actually-works-oauth-2-1-resource-servers-and-resource-indicators/

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