Re-key the persisted OAuth store to (server, issuer) and add the
SEP-837/2350/2352 authorization-hardening UX. The SDK v2 auth() drives the
SEP-2352 flow off the provider's ctx.issuer; the Inspector's job is to honor it
and round-trip the issuer stamp.
SEP-2352 — issuer-bound credentials
- ServerOAuthState nests issuer-bound credentials under
byIssuer[issuer] = { clientInformation, clientRegistrationKind, tokens }, with
an activeIssuer pointer answering the transport's ctx-less per-request bearer
read.
- Fix a latent bug: OAuthStorageBase re-parsed tokens/client-info through
OAuthTokensSchema/OAuthClientInformationSchema, which strip the non-RFC
`issuer` field and silently defeat the SDK's discardIfIssuerMismatch. The
store re-attaches the stamp from the byIssuer key.
- BaseOAuthClientProvider threads ctx.issuer and implements
discoveryState()/saveDiscoveryState() (activates the SDK's callback-leg
AuthorizationServerMismatchError binding check) and invalidateCredentials().
- Lazy, migration-free upgrade: a legacy pre-1625 blob's top-level
clientInformation/tokens are returned as an unkeyed fallback until the first
issuer-stamped save promotes them into byIssuer.
SEP-837 — application_type
- DCR declares application_type: "native" (localhost Inspector).
- ClientSettingsForm renders RegistrationRejectedError detail and reflects DCR's
deprecated-in-favor-of-CIMD (SEP-991) status.
SEP-2350 — step-up scope union
- Per-server onInsufficientScope (reauthorize | throw) setting wired
ServerSettingsForm -> StoredMCPServer.oauth -> StreamableHTTPClientTransport.
- StepUpAuthModal visualizes the prior-union-challenged scope set, tagging each
scope `new` vs `already granted`.
mcpAuth simplification
- Delete the hand-rolled authorizeWithoutRefresh (mishandled issuer stamping);
forward forceReauthorization/skipIssuerMetadataValidation to native SDK auth()
so both the initial and step-up paths get SEP-2352 stamping.
Vocabulary + docs
- OAuthStep gains cimd_fetch / issuer_comparison / scope_step_up (recorded on a
step-up redirect); the Network tab labels auth requests by OAuth phase.
- v2_auth_hardening.md gains an as-built status section.
Deferred to the era-aware card: the SdkError(EraNegotiationFailed) ->
UnauthorizedError unwrap and finishAuth(URLSearchParams) form (only fire under
non-legacy negotiation).
Closes#1625
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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