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turnstone/docs
Patrick Buckley 891c8b1785 docs(mcp): operator guide for oauth_obo single-credential sign-in passthrough (slice 5)
Adds the oauth_obo section to docs/mcp-oauth.md:
- when to use it vs oauth_user (mode table row)
- deployment config ([oidc] capture_user_credential + obo_grant_profile,
  encryption-key requirement)
- per-IdP setup: Entra (delegated permissions + admin consent, plus the
  verified admin-consent-propagation AADSTS65001 gotcha) and Keycloak
  RFC 8693 (standard token exchange + audience client scopes)
- revocation & custody model: identity-unlink cuts a user off (credential
  + cache purge); flush-cache is an honest re-mint, not a revoke; per-server
  revocation is IdP-governed
- auth-type-transition + troubleshooting table rows for obo
- interim #682 note (Entra pre-authorized-clients removes the second
  consent for plain oauth_user, tenant-config only)

Refs #551.
2026-07-12 19:03:35 -07:00
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