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Aaron Parecki

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  • Evolution, not Revolution: How MCP is Reshaping OAuth

    Apr
    2
    April 2, 2026
    12:20pm - 12:45pm (-0400)
    New York Marriott Marquis
    1535 Broadway, New York, New York, US
    MCP Dev Summit New York
    Watch Video
    The impulse to rewrite the auth stack for AI agents is strong, but we cannot design away the fundamental relationships standards protect. This session explores how MCP is reshaping OAuth—not abandoning it—to meet the ecosystem's unique challenges:

    The "Unregistered Client" Problem: Traditional OAuth requires pre-registration. MCP breaks this. We’ll see how Client ID Metadata Documents (CIMD) allow agents to bring their own identities to arbitrary servers, how it improves on Dynamic Client Registration, and how to mitigate the risks of unregistered clients.

    Separation of Concerns: Why your MCP server shouldn't be your Authorization Server. We’ll cover how Protected Resource Metadata (RFC 9728) enables dynamic auth server discovery, keeping agents lightweight and security boundaries clean.

    Enterprise-Managed Authorization: To stop "click-through fatigue," we’ll introduce the Identity Assertion Authorization Grant. This moves consent to the enterprise policy layer, enabling secure, scalable adoption.

    Join me to secure the agent ecosystem—from discovery to governance—not by reinventing the wheel, but by making incremental improvements to the way it turns.
    permalink #mcp #oauth #xaa
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Hi, I'm Aaron Parecki, Director of Identity Standards at Okta, and co-founder of IndieWebCamp. I maintain oauth.net, write and consult about OAuth, and participate in the OAuth Working Group at the IETF. I also help people learn about video production and livestreaming. (detailed bio)

I've been tracking my location since 2008 and I wrote 100 songs in 100 days. I've spoken at conferences around the world about owning your data, OAuth, quantified self, and explained why R is a vowel. Read more.

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