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Verification register Security & Identity

Readiness verdict

MCP OAuth 2.1 Authorization Profile

A dated reading of what is claimed, reported, and independently verified in the current evidence.

As of
2026-08-20
Revision
1
Method
v1.3.0

Current reading

Readiness band and full integer triple

AI-assisted assembly · derived results

Readiness band

Ready

Primary summary from verified readiness

Confidence
69% · stale
Computed at
2026-08-20T10:52:39.621838+00:00
Claimed
80

Public ambition and stated capability

Reported
74

Observed practitioner reporting

Verified
65

Independently supported evidence

Gap
+15

Claimed leads verified

Evidence strength Strong

Decision

What the current evidence supports

Human editorial judgment · 2026-08-20

Adopt with guardrails

Why
This is a ratified spec with very-high real-world adoption that directly governs how our agent MCP tools authenticate — but the optionality plus the confused-deputy/token-passthrough footguns mean we must implement the specific MUSTs and consent gates deliberately, not assume the profile is safe by default.
Next
Audit our MCP servers against the 2025-11-25 normative MUSTs: RFC 9728 Protected Resource Metadata + WWW-Authenticate 401, mandatory audience validation (reject tokens not issued for us), S256 PKCE enforcement, and explicit-no-token-passthrough to upstream APIs; prefer Client ID Metadata Documents / pre-registration over DCR.

Constraints

Blockers

No named blocker is present in the current public projection.

Evidence summary

Derived counts

AI-assisted assembly

Total
12
Tier 1
0
Tier 2
4
Tier 3
8
Supports
6
Contradicts
4
Context
2
Latest observed
2026-04-01

Counts and dates only. Raw signals, private excerpts, trust records, and internal corpus material are not published here.

Publication record

Revisions

Initial public reading

  1. 2026-07-19 Reading moved from ready to ready.

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