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MCP OAuth 2.1 Compliance Questioned Over Audience Binding

By PulseAugur Editorial · [1 sources] ·

A Reddit user is seeking clarification on the specification for MCP (presumably a protocol or standard) regarding OAuth 2.1 compliance. The user observed that many MCP servers advertise OAuth discovery metadata but do not enforce audience binding, potentially allowing tokens meant for one resource to be replayed against another. The core question is whether the MCP specification should explicitly require audience enforcement when OAuth metadata is published, or if this is a responsibility for clients to verify independently. AI

RANK_REASON The item is a user-generated question about a technical specification, not a primary announcement or development.

Read on r/Anthropic →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

MCP OAuth 2.1 Compliance Questioned Over Audience Binding

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The item is a user-generated question about a technical specification, not a primary announcement or development.
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COVERAGE [1]

  1. r/Anthropic TIER_1 English(EN) · /u/SarahVoge ·

    Should „advertises OAuth metadata but doesn’t enforce audience“ be a spec clarification for MCP?

    <!-- SC_OFF --><div class="md"><p>I spent last week scanning 277 public MCP servers for OAuth 2.1 compliance and one gap kept coming up that I think is more of a spec question than an implementation bug.</p> <p>76 servers serve OAuth discovery metadata but do not advertise RFC 87…

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