Commit graph inspector/core/mcp/serverList.ts
Author SHA1 Message Date
Cliff Hall
ec185f1053
Logging: per-request log level on modern servers (era fork) (#1629) (#1724)
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* Logging: per-request log level on modern servers (era fork) (#1629)

On modern (2026-07-28) servers `logging/setLevel` and the session-scoped
level are gone: the client opts into logs per request via the
`io.modelcontextprotocol/logLevel` `_meta` key, and the SDK does not
attach it automatically, so server logs are silently absent until stamped.

Core (`InspectorClient`):
- `setModernLogLevel(level | undefined)` / `getModernLogLevel()` store the
  opt-in level; `mergeMeta` stamps it on every outgoing request, gated on
  the negotiated modern era so legacy connections are untouched.
- Cleared on disconnect so it can't leak into the next connection.

Web UI:
- `LogControls` forks on `protocolEra`: legacy keeps the `logging/setLevel`
  selector + Set button; modern shows a per-request opt-in Select (Off +
  levels, applied immediately) with copy explaining logs arrive on the
  originating request's stream.
- Threaded `protocolEra` / `modernLogLevel` / `onSetModernLogLevel` through
  LoggingScreen and InspectorView from App.

Tests: unit coverage for the modern LogControls/LoggingScreen fork;
integration coverage proving the `logLevel` `_meta` is stamped on a real
modern server once opted in (and not on legacy).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

* test-servers: logging era-fork showcase configs + proof screenshots (#1629)

Add two manual-testing configs and README docs for the logging era fork:

- logging-legacy-http.json: plain streamable-HTTP server with `logging: true`
  and a `send_notification` tool. The Logs tab shows the legacy session-scoped
  "Set Active Level" selector + Set button; calling the tool streams logs.
- logging-modern-http.json: same, with `transport.modern: true`. Connect with
  Protocol Era = Modern and the Logs tab shows the per-request opt-in control;
  the client stamps `_meta["io.modelcontextprotocol/logLevel"]` on every
  request (visible in the Network tab request body).

pr-screenshots/ documents the verified behavior end-to-end against both real
servers: the legacy control with logs streaming, the modern per-request
control, and the modern tools/call request body carrying the stamped logLevel
_meta.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

* test-servers: send_notification emits via per-request notifier so modern logs stream (#1629)

The `send_notification` tool sent its `notifications/message` through the
global `server.server.notification()`. On the modern (2026-07-28) stateless
leg that isn't tied to the in-flight request, so the SDK answered the tool
call with plain JSON and dropped the log — nothing reached the Inspector's
Logs panel.

Prefer the per-request `extra.sendNotification` (rebuilt from
`ctx.mcpReq.notify`): scoped to the current request, it makes the SDK upgrade
the response to SSE and stream the log back on the originating request's
stream. Falls back to the global notifier (legacy path / no per-request
context). Verified end-to-end: opting in via the Logs-tab "Log Level per
Request" control and calling send_notification now streams the entry on the
modern server; legacy behavior unchanged (server-notification integration
tests green).

README documents the modern logging showcase and the caveat that this test
server streams whenever a tool emits — the SDK beta strips the per-request
envelope from the handler context, so the tool can't gate on the client's
logLevel opt-in (the client-side `_meta` stamp #1629 owns is still fully
visible in the Network tab).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

* test-servers: send_notification uses SDK request-scoped log() → spec-faithful modern gating (#1629)

The previous fix routed `send_notification` through `extra.sendNotification`
(`ctx.mcpReq.notify`), which streams on the modern leg but emits
unconditionally — the log showed up even when the client hadn't opted in via
the per-request `logLevel`.

The SDK already provides the correct primitive: `ctx.mcpReq.log(level, data,
logger)` (added in `McpServer.buildContext`). It applies the era-correct
threshold gating itself — on the modern (2026-07-28) leg it reads the
per-request `logLevel` opt-in from the request envelope and drops the message
when the client didn't opt in or the level is below the requested severity; on
legacy it honors the session level from `logging/setLevel` — and emits through
`notify`, so the modern response still upgrades to SSE and the log rides the
originating request's stream.

Surface it as `extra.log` (`toHandlerExtra` maps `ctx.mcpReq.log`) and have
`send_notification` prefer it, falling back to the global notifier for callers
without per-request context. Verified end to end: opting in via the Logs-tab
"Log Level per Request" control stamps `logLevel` in the request `_meta` and
streams the log; setting it back to Off omits the key and the server gates the
log (plain JSON response, no notification). Legacy server-notification
integration tests still green. (No SDK change needed — the earlier apparent
gap was our test server using the wrong low-level API.)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

* web+core: add "Log Level per Request" as a per-server setting, defaulting to on (#1629)

Adds the modern per-request log level as a persisted Server Settings option
(Options → "Log Level per Request", below Protocol Era), so a server can opt
into logs by default instead of the Logs-tab control starting at Off.

- types.ts: `ModernLogLevel` (`"off"` | the 8 levels), `DEFAULT_MODERN_LOG_LEVEL`
  = "debug" (default-on so a modern connection surfaces server logs out of the
  box), `MODERN_LOG_LEVELS`, and an `isModernLogLevel` guard. Field added to
  `InspectorServerSettings` and `StoredMCPServer`.
- serverList.ts: round-trip the field (lift on read, omit-on-default on write,
  drop unknown literals) mirroring `protocolEra`; add to the persisted field
  allowlist.
- remote/node/server.ts: validateSettings accepts/validates it and the
  normalize path drops a malformed literal.
- inspectorClient.ts: the constructor seeds `modernLogLevel` from the setting
  (`"off"` → not opted in), so a modern connection stamps the level from the
  first request without UI interaction. mergeMeta still gates on the modern era.
- ServerSettingsForm/Modal: a Select (Off + 8 levels) with a modern-era
  description. App seeds the live Logs-tab control from the setting on connect
  so the two stay in sync.

Tests: form Select (default/onChange/off/reflect), modal handler, serverList
round-trips, route validation (accept/reject/drop), and constructor seeding
(seeded level stamped from the first request; "off" opts out). The prior
modern-era "stamps once set" test is updated for the new default-on behavior.
Coverage gate green.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

* Fix CI + review: format ServerSettingsForm, drop stray network export, broaden ignore

- Prettier-format ServerSettingsForm.tsx (the format:check failure that broke
  CI — my pre-push `npm run format` from the repo root was a silent no-op since
  there is no root format script; formatting is per-client).
- Remove `inspector-network-logging-modern-2026-07-19T15-11-27.013Z.json`, a
  Network-tab export debugging artifact accidentally committed in ca2aa526
  (flagged by review).
- Broaden the .gitignore debugging-artifacts section with
  `/inspector-network-*.json` so future network exports are ignored (the
  existing `/inspector-history-*.json` didn't match the network export naming).

Verified with the full `npm run ci` (validate → coverage → smoke → storybook),
green across all clients.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

* test: add modern-era log delivery + gating e2e tests (#1629)

The modern-era suite covered the client-side `_meta` logLevel stamp but not
that a log actually flows back — the legacy suite already has that
(`should receive server-initiated notifications via SSE/streamable-http`), so
the modern side was the gap.

Add two live e2e tests against a modern (`createMcpHandler`) server serving the
`send_notification` tool with `logging: true`:
- opted-in (server setting = a level): calling the tool delivers a
  `notifications/message` over the request's SSE stream, with the right
  level/logger/data.
- not opted in (setting "off"): the tool still returns a result, but the server
  gates the log — no `notifications/message` is received.

This exercises the full path end to end: the client seeding + `_meta` opt-in,
and the server's `send_notification` → `ctx.mcpReq.log` era-correct gating.

Verified with the full `npm run ci` (green across all clients).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

* web: hide the modern "Log Level per Request" setting on legacy connections (#1629)

The per-request log level is meaningless on a legacy server (which uses
logging/setLevel), so hide it in Server Settings when the era is legacy:
- protocolEra pinned to "legacy" → hidden (no connection needed), or
- protocolEra "auto" that negotiated legacy at connect time → hidden.

It stays visible for a pinned "modern" server, and for an "auto" server that is
either not yet connected (era unknown) or resolved to modern.

Threads the negotiated era down: App passes `negotiatedEra` to
ServerSettingsModal only when the settings target is the live-connected server
(`connectionStatus === "connected" && settingsModalTargetId === activeServerId`);
the modal forwards it to ServerSettingsForm, which gates the control on
`configuredEra === "modern" || (configuredEra === "auto" && negotiatedEra !== "legacy")`.

Tests: visibility matrix on the form (legacy hidden; auto+legacy hidden;
auto+unconnected and auto+modern and modern shown) and a modal hide case; the
existing modern-log tests now base on a modern-era settings object. Verified in
the browser (legacy hides, switching to modern reveals it reactively) and with
the full `npm run ci` (green across all clients).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-19 17:08:22 -04:00
Cliff Hall
b3b04c6939
Thread cacheMode through managed list refresh via SDK cache-aware verbs (#1721) (#1723)
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* Thread cacheMode through managed list refresh via SDK cache-aware verbs (#1721)

Manual/auto refresh of tools/resources/prompts now forces a cache-bypassing
round trip on modern servers, delivering the raw-request cacheMode control
deferred from #1628.

The InspectorClient list/read path uses the SDK's single-page `client.request`
verbs (for pagination debugging), which never consult the SDK response cache —
so `cacheMode` was inert there. This adds a separate aggregate path that routes
through the SDK's cache-aware high-level verbs, where `cacheMode` is honored:

- InspectorClient: new `listAllTools/Prompts/Resources/ResourceTemplates(
  { cacheMode, metadata })` that call `client.listTools()` etc. (all-page
  aggregate + SEP-2243 x-mcp-header exclusion + cache consult/write). A shared
  `getCacheableRequestOptions` / `aggregateListParams` back all four.
- InspectorClientProtocol: the four `listAll*` methods added.
- ManagedListState: delegates page walking to the SDK verb (config `fetchPage`
  loop → `fetchAll`); `refresh(metadata?, cacheMode?)` threads cacheMode. A
  `list_changed` auto-refresh bypasses the cache (`cacheMode: "refresh"`).
- Managed hooks: user-initiated `refresh()` passes `cacheMode: "refresh"`, so
  the existing per-tab Refresh buttons become genuinely cache-bypassing — no
  App wiring change. Connect-time load stays default (`'use'`).

The single-page `listTools(cursor)` primitive is unchanged; the paged hooks
still surface per-page `nextCursor`.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

* Single-page list pagination: sidebar toggle + server setting (#1721)

Delivers the deferred single-page fetch UI: Tools/Resources/Prompts can be
loaded one page at a time instead of auto-aggregating every page — a defensive
option for servers with very large lists.

- New `singlePageLists` server setting (persisted, server-wide), plumbed through
  ServerConfig/InspectorServerSettings, serverList convert/default, the node +
  remote settings paths, and the Server Settings form ("Fetch Lists One Page at
  a Time").
- New `ListPaginationControls` element (a "Single page" switch + "Load next
  page" button + "N pages loaded" status) rendered in each list sidebar; the
  toggle edits the setting live (optimistic) and persists it.
- The paged state stores (PagedTools/Prompts/ResourcesState) now own loading:
  they auto-load page 1 on connect in single-page mode and track nextCursor +
  page count as observable state; the managed stores skip their all-page walk
  in single-page mode (so nothing is over-fetched) while still lighting the
  list-changed indicator. `usePaginatedList` selects the display source and
  pagination controls per mode — pure, no data-loading in React effects.
- Refresh is mode-aware: reload page 1 in single-page mode, refetch the whole
  aggregate otherwise. Sidebars widened 340→360 so the controls don't crowd
  list entries.
- Test server: `test-servers/configs/pagination-http.json` (12 tools/resources/
  prompts, page size 4 → 3 pages each) exercises the flow end to end.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

* Add pr-screenshots proving single-page pagination (#1721)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

* Address @claude review: template load, double-click guard, auth recovery (#1721)

- Fix: resource templates never loaded on connect in single-page mode. The
  connect-time all-page skip now applies only to lists with a paged counterpart
  (new `deferInSinglePage` flag on ManagedListConfig; false for resource
  templates), so templates still aggregate on connect regardless of the setting.
- Guard `PagedTools/Prompts/ResourcesState.loadPage` against a concurrent load
  (fast double-click on "Load next page") so the same page can't be appended
  twice; the in-flight load owns the cursor and the second call is a no-op.
- Thread ambient auth recovery through the single-page refresh, Load-next-page,
  and mode-switch loads (they previously bypassed it) — usePaginatedList's
  onRefresh/onLoadMore now return their promises so App can wrap them.
- Drop the misleading "aggregated list" wording from the paged-store docs.

Tests added for each; npm run coverage green.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

* Review round 2: revert optimistic toggle when persisting the setting fails (#1721)

Non-blocking review follow-up. If updateServerSettings rejects, the optimistic
`singlePageListsOverride` is now cleared and the live client setting rolled back
(the effect only clears the override when the persisted value changes, which
doesn't happen on failure), so the UI and client reflect what's on disk rather
than the failed edit. Added an App test for the revert path.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

* Fix single-page Refresh not clearing list-changed indicator + UI polish (#1721)

Round-3 review fix (blocking): in single-page mode a `list_changed` lights the
list-changed indicator, but the single-page Refresh reloads page 1 of the paged
store and bypassed `useManaged*.refresh()`, so the indicator was never cleared.
Expose `clearListChanged` from useManagedTools/Prompts/Resources and call it in
the single-page branch of onRefreshTools/Prompts/Resources. Tests added.

UI polish (user feedback on the sidebar control):
- Rename the switch label "Single page" → "Paginated".
- Put "Load next page" on the same row as the switch, space-between (switch
  fully left, button fully right).
- Move the "N pages loaded" status to its own line below the row, centered.
- Hide the whole control once the list is known to be a single page
  (single-page mode, page 1 loaded, no nextCursor) — nothing to paginate.

pr-screenshots refreshed to the new layout.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

* Rename the singlePageLists setting to paginatedLists for clarity (#1721)

`singlePageLists` read backwards from the "Paginated" switch label (it sounds
like paginated=false). Rename the server setting to `paginatedLists` with the
same value meaning — true = paginated/one-page-at-a-time, false = aggregate-all
— and follow through on the related identifiers for consistency:

- Setting field `paginatedLists` across ServerConfig / InspectorServerSettings,
  serverList convert/default, node + remote settings paths, and the form/modal
  callbacks (onPaginatedListsChange).
- `usePaginatedList` / `ListPaginationControls` prop `singlePage` → `paginated`,
  `onSinglePageChange` → `onPaginatedChange`.
- `ManagedListConfig.deferInSinglePage` → `deferWhenPaginated`.
- App state (paginatedListsOverride, onTogglePaginatedLists, …) and all
  tests/fixtures + mode-referring comments.

"single-page" wording that denotes the SDK's one-page `client.request` verb
(inspectorClient) is intentionally left as-is. Purely a rename — no behavior
change; unit + integration + cli + tui + coverage all green.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

* Format App.test.tsx (prettier) after the paginatedLists rename (#1721)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-19 01:06:31 -04:00
Cliff Hall
e026051b47
Era-aware connection model & capability gating (#1626) (#1697)
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* Era-aware connection model & capability gating (#1626)

Make protocol era (SEP §7.8) a first-class, per-server connection dimension,
orthogonal to the transport type, and drive the SDK Client's versionNegotiation
from it.

Config
- Add `ServerProtocolEra` ("legacy" | "auto" | "modern"), `DEFAULT_PROTOCOL_ERA`
  (legacy, per the SDK's don't-auto-probe guidance), `MODERN_PROTOCOL_VERSION`,
  and `eraToVersionNegotiation()` in core/mcp/types.ts.
- Persist `protocolEra` on `StoredMCPServer` / `InspectorServerSettings`,
  round-tripping through serverList.ts (omitting the default on disk) and the
  `/api/servers` read + write validators.

InspectorClient / state
- Thread `versionNegotiation` through `InspectorClientOptions` (default legacy),
  replacing the hardcoded pin. After connect, read `getProtocolEra()` /
  `getDiscoverResult()` / `getNegotiatedProtocolVersion()`, expose them via
  getters, dispatch `protocolEraChange` / `discoverResultChange`, and clear on
  disconnect. `useInspectorClient` surfaces `protocolEra` / `discoverResult`.

Web UI
- ServerSettingsForm: a Protocol Era selector bound to the per-server setting.
- ConnectionInfoContent: era-aware — Era badge, Session ("Sessionless" on
  modern), and a Discovery section (supported versions + extensions) from the
  `server/discover` result.

CLI/TUI also map the mcp.json `protocolEra` into versionNegotiation so the field
applies uniformly. Version negotiation stays fully client-side; modern connect
works over the existing remote tunnel and disconnect is sessionless (the SDK
skips DELETE when there is no session id). Mcp-* header fidelity is left to the
History/Network card.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

* Address @claude review: era docstrings, era validation, stdio session label, AGENTS.md rule

- Fix stale docstrings/comments in inspectorClient.ts, useInspectorClient.ts,
  inspectorClientEventTarget.ts, and ConnectionInfoContent.tsx: getProtocolEra()
  returns "legacy" (not undefined) on a plain legacy connect; it is undefined
  only when not connected.
- Validate protocolEra at the storedFieldsToInspectorSettings read boundary
  (new shared isProtocolEra guard) so a hand-edited mcp.json read directly by
  the CLI/TUI drops an unknown era instead of passing it to
  eraToVersionNegotiation. Keeps the exhaustive switch intact.
- ConnectionInfoContent: the Session row is HTTP-only — show "N/A (stdio)" for
  stdio instead of the misleading "Session-based".
- AGENTS.md: add a rule against unjustified `as unknown as` double casts, and
  drop the one such cast introduced in the serverList test.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

* Address re-review: dedupe isProtocolEra guard in remote server

Replace the local isProtocolEra in remote/node/server.ts with the shared guard
now exported from serverList.ts (already imported here), so the era literal set
lives in one place and can't drift.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNdjEPKLG637X8YmhDiEk5

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-16 23:39:29 -04:00
Cliff Hall
7fecebed5e
OAuth: re-key store to (server, issuer) + SEP-837/2350/2352 auth UX (#1694)
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* OAuth: re-key store to (server, issuer) + SEP-837/2350/2352 auth UX (#1625)

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>

* Address @claude review: issuer-stamp source gating + clear/activeIssuer + phase over-match

- SEP-2352: stamp the issuer only when the credential actually came from the
  byIssuer slot (`fromSlot`), not merely when a slot exists. A partially-populated
  slot alongside a surviving legacy field would otherwise stamp a legacy (possibly
  cross-AS) credential with the current issuer, defeating discardIfIssuerMismatch.
- Issuer-scoped clears no longer promote the cleared issuer to `activeIssuer`
  (updateIssuerSlot gains a `setActive` flag; save paths keep the promotion).
- oauthNetworkPhase matches register/token/authorize as the final path segment
  (trailing slash tolerated) so `/token/refresh` or `/api/register/foo` no longer
  over-match.
- Tests for all three.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-16 16:52:53 -04:00
cliffhall
dbb8c40245 Address review: justify/refine SDK-gap casts (as unknown as)
Per human review on #1688: for each `as unknown as` in the PR, either refactor
or justify with a comment naming the SDK gap (so it can inform SDK-side type
improvements).

- Sampling/elicit receiver-task returns: route through a typed `CreateTaskResult`
  so the object shape IS checked; the remaining cast to CreateMessageResult /
  ElicitResult is the honest SDK gap (the 2-arg setRequestHandler overload types
  the handler return as the spec result only, not the task-augmented variant).
- `_requestHandlers` / `_progressHandlers` private-field casts: comments now name
  the exact missing public API (opt a handler out of result validation; keep a
  progress subscription alive across a resolved request).
- test-server `_requestHandlers` cast: same SDK gap on the server side, noted.
- serverList object->Record casts (pre-existing): documented as plain structural
  widening (no index signature -> TS requires the `unknown` step), not an SDK
  workaround.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-15 14:47:49 -04:00
cliffhall
f9f79fff54 Address @claude review: format core/, typed output-validation error, document progress heuristic
- Run Prettier on the 60 core/ files this PR touched — the deterministic
  import rewrite had collapsed multi-line imports and left throws unwrapped;
  core/ is in no format gate so it slipped past CI. Now Prettier-clean.
- Default-path output-schema violation now throws
  ProtocolError(ProtocolErrorCode.InvalidParams, …) instead of a bare Error,
  matching the prior v1 contract (SDK threw a typed McpError with a code) so
  downstream `instanceof`/`.code` branching keeps working.
- Document the "assumes serial construction" invariant on pollTaskToolCall's
  progress-subscription revival (the `_progressHandlers` new-key heuristic).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-15 11:08:54 -04:00
cliffhall
19a6df7ad3 SDK v2 migration (behavior-neutral, versionNegotiation: 'legacy') (#1624)
Migrate all three clients + core + test-servers from
@modelcontextprotocol/sdk@1.29 to SDK v2 (2.0.0-beta.4), keeping behavior
identical against legacy (2025-11-25) servers. Foundation for the SDK V2 +
New Spec stack.

Packages
- Split @modelcontextprotocol/sdk -> @modelcontextprotocol/client (Client,
  transports, OAuth, error taxonomy, protocol types) + core (Zod schemas);
  stdio -> client/stdio, Ajv -> client/validators/ajv. Test-servers ->
  @modelcontextprotocol/server (+ server-legacy/sse). Deterministic import
  rewrite (schemas -> core, everything else -> client); the codemod misroutes
  client code to /server so it was not used for path routing.
- new Client(..., { versionNegotiation: { mode: 'legacy' } }) — nothing
  2026-era goes on the wire.

Runtime (core/mcp/inspectorClient.ts)
- Error taxonomy: McpError -> ProtocolError, ErrorCode -> ProtocolErrorCode;
  RequestTimeout -> SdkError/SdkErrorCode.
- Handlers take method strings; task methods (tasks/*, notifications/tasks/*)
  use the 3-arg custom form (excluded from v2's spec-method set).
- Legacy tasks kept working (per project requirement): requestor tasks re-
  implemented over raw client.request + explicit deprecated schemas;
  experimental.tasks.callToolStream replaced by a local pollTaskToolCall
  async generator (with _progressHandlers revival so task-execution progress
  still reaches the caller). Receiver (server-initiated) tasks: the v2 Client
  validates a sampling/elicit handler result and rejects the legacy { task }
  response with -32602 — installReceiverTaskResponseBypass swaps the wrapped
  entry in the private _requestHandlers map for the task-augmented branch so
  { task } reaches the wire (fixes server-initiated sampling-via-task).
- Pagination: list verbs use raw client.request({method}, List*ResultSchema)
  for single-page behavior (v2's client.listX() auto-aggregate all pages).

Web / auth / apps
- Rename local JsonSchemaType -> InspectorFormSchema + add toFormSchema()
  structural narrowing at the SDK-schema -> form boundary.
- ext-apps still peers on SDK v1: one compat boundary with documented casts
  (remove when ext-apps#702 lands a v2 peer).
- OAuth provider saveClientInformation reconciled with v2's
  OAuthClientInformationContext; InvalidClientMetadataError re-homed as a
  local class (server-legacy/auth is not browser-safe).
- vitest.shared.mts dedupes @modelcontextprotocol/client+core to one copy so
  vi.mock intercepts the SUT's import.

Accepted v2 behavior changes (per #1624 / spec §9.2): unknown-tool call
rejects with -32602; cancellation is stream-abort (no guaranteed
notifications/cancelled frame); output-schema strictness restored via the
Inspector's own Ajv check on the default path.

npm run ci green: validate (web 3087 / cli 212 / tui 274 / launcher 5),
coverage (>=90 per-file, all clients), smoke (launcher/cli/web), storybook
(410).

Closes #1624

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-15 10:44:24 -04:00
Bob Dickinson
5de4e911e3
feat(web,core): enterprise-managed authorization (EMA) (#1509) (#1512)
Adds enterprise-managed authorization (EMA): browser-side IdP login + RFC 8693 token-exchange and JWT-bearer resource-token mint, per-server EMA opt-in in Server Settings, IdP config in Client Settings, and IdP clientSecret keychain storage. Includes the v2/main merge and review follow-ups (400 on malformed client config; normalizeIdpIssuer import consolidation).
2026-06-24 22:15:12 -04:00
Cliff Hall
5ee347571f
feat(web,core): persist & edit STDIO cwd/env in Server Settings (#1515) (#1518)
* feat(web,core): edit STDIO cwd/env in Server Settings (#1515)

Persist and edit a STDIO server's working directory and environment
variables through the Server Settings modal.

- Add `env` (pair-array, mirrors headers) and `cwd?` to
  `InspectorServerSettings`.
- `storedFieldsToInspectorSettings` lifts the stdio config's `env`/`cwd`
  into settings so the modal can show them; they stay on `config` for the
  transport. Add `envRecordToPairs` / `envPairsToRecord` helpers.
- `env`/`cwd` remain config-owned on disk (the standard mcp.json location):
  the `/api/servers` PUT route writes an edited settings.env/cwd back onto
  the stored stdio config on a settings-only patch (supporting clear), and a
  config-providing PUT keeps config authoritative. `validateSettings`
  accepts `env`/`cwd`.
- Server Settings modal: Working Directory field in Options and a dedicated
  collapsible Environment Variables section — both STDIO-only.
- Registry server.json import sets no `cwd` (the schema has no
  working-directory concept); documented in serverJson.ts.

Tests: serverList converter round-trip, route write-through (set/clear,
config-precedence, non-stdio no-leak, validation), import preservation
(client-config cwd, registry cwd skip), and form/modal component coverage.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* fix(web): preserve config env/cwd when a settings PUT omits them (#1515 review)

Address Claude's review of #1518.

- `/api/servers` PUT now distinguishes an *absent* `env`/`cwd` (preserve the
  stored value) from an explicit empty list / blank string (clear). Previously
  `validateSettings` coerced a missing `env` to `[]`, so an env-unaware caller
  patching only a timeout would silently wipe the server's env/cwd. The
  integrated web client always resends the full GET-rehydrated env, so it was
  unaffected — this protects the raw HTTP contract.
- `validateSettings` reports `envProvided`/`cwdProvided`; the write-through only
  touches `config.env`/`cwd` for fields the caller actually sent.
- On the omit path, rehydrate the untouched env's keychain values onto the
  rebuilt entry so the secret reconcile re-persists them rather than sweeping
  the blanked-on-disk keys out of the keychain.
- Minor: guard the stdio cast in `mcpConfigToServerEntries` on the transport
  type instead of casting unconditionally.
- Test: settings-only PUT omitting env/cwd preserves config keys + cwd + the
  keychain secret.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-24 19:15:43 -04:00
Cliff Hall
53dc4549be
fix(core): trace dropped fetch body update when entry rotates out (#1390) (#1480)
* fix(core): trace dropped fetch body update when entry rotates out (#1390)

FetchRequestLogState.onFetchRequestBodyUpdate silently dropped a deferred
response-body update when the matching entry had already been evicted by
log rotation (>= maxFetchRequests newer requests appended between the
append and the fire-and-forget body read). The user saw an empty Response
Body with no way to distinguish "body never came back" from "body dropped
after eviction".

Plumb an optional pino logger into FetchRequestLogState (defaulting to the
silent logger) and emit a logger.debug at the early-return site so the drop
is traceable. The web client wires the existing remote logger from
createWebEnvironment into the state manager.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* fix(core): emit dropped-body trace at warn level so it is observable (#1390)

Review feedback: the web remote logger (createRemoteLogger) defaults to
level 'info' with no override at the environmentFactory call site, so a
logger.debug at the drop site is filtered out by both the pino level gate
and transmit.level — the diagnostic never reaches /api/log and the drop
stays invisible in the shipped web app, defeating the issue's goal.

Promote the trace to logger.warn (>= info, so it transmits by default). A
response body lost to log rotation is unexpected data loss, not routine
diagnostic noise, so warn is the appropriate severity. Update the comment
to explain the level choice and switch the test stub from debug to warn,
extracting a small typed makeWarnLogger helper per review.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* feat(web): configurable Network Log Size per server + body-dropped toast (#1390)

Turn the otherwise-invisible "response body dropped after rotation" case into
an actionable signal:

1. Per-server `maxFetchRequests` setting (default 1000, 0 = unlimited),
   editable as "Network Log Size" in the first (Options) accordion section of
   the Server Settings form. Plumbed through the full settings pipeline:
   InspectorServerSettings + StoredMCPServer types, the serverList disk
   converters (read defaults to 1000, write omits the default to keep diffs
   minimal — 0 is a meaningful non-default), and the node server's GET-sanitize
   + write-side validateSettings (non-negative number). Applied live to the
   active connection on settings-modal close via a new
   FetchRequestLogState.setMaxFetchRequests (shrinking trims immediately), and
   at connect time for the next session.

2. FetchRequestLogState now emits a `fetchRequestBodyDropped` event, but only
   for genuine rotation drops (log at capacity with a finite cap) — not for
   benign post-clear stragglers or unlimited logs, which previously also hit
   the warn path. App shows a deduped, persistent toast (stable per-server id,
   no auto-close) explaining what happened and the likely causes, with a link
   that opens this server's settings on the Options section (modal remounts via
   key) so the user can raise the limit if it's just a high-traffic server.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* fix(web): don't treat a cleared Network Log Size field as unlimited (#1390)

Review feedback: clearing the NumberInput emits "", and `parseInt("") || 0`
coerced that to 0 (unlimited). Since the value applies live on modal close, a
user who cleared the field to retype and then closed the modal would silently
switch the log to unlimited. Fall back to the current value on an empty/NaN
parse and reserve 0 for an explicit numeric entry. Adds a cleared-input test.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-14 17:35:52 -04:00
Cliff Hall
b0a024269e
feat(web): list-changed handling — indicator, pull-on-demand default, and per-server auto-refresh opt-in (#1402) (#1443)
* feat(web): wire the listChanged indicator across all screens (#1402)

The per-screen list-changed indicator was hardcoded false in
InspectorView for Tools, Apps, Prompts, and Resources, so it could
never light up. Source it from the managed-state layer instead.

Each ManagedXState now tracks a listChanged flag: set true when its
*/list_changed notification arrives (the existing auto-refresh leaves
it set), exposed via getListChanged()/a listChangedChange event, and
cleared by clearListChanged() or on disconnect. The useManagedX hooks
surface the flag and clear it on a user-initiated refresh (the
indicator's Refresh button = acknowledge). App threads the three flags
to InspectorView, which maps them to the screens — Apps shares the
tools flag since apps are a filtered view of tools.

Tests cover set/clear/disconnect at the state-manager layer, the hook
subscription + refresh-clears behavior, and the InspectorView routing
(including Apps sharing the tools flag and no cross-wiring between
screens).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* fix(core): close clear-after-await race in managed-list refresh (#1402 review)

The useManagedX refresh() callbacks cleared the listChanged flag AFTER
awaiting the fetch. If a */list_changed arrived mid-fetch, the state
re-set the flag (and auto-refreshed), then the trailing clear wiped that
genuinely-new signal. Clear BEFORE the await instead: the user's refresh
acknowledges only the change in hand, and a mid-fetch change re-sets the
flag and survives. Adds a race regression test on the tools hook.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* fix(web): drop duplicate Refresh on the Apps screen (#1402)

AppControls uniquely had a standalone toolbar Refresh button AND the
ListChangedIndicator on a separate row, so once the indicator could
actually appear (this PR), the Apps screen showed two Refresh buttons.
Match the other three controls (Tools/Prompts/Resources): the indicator
is the single header-right refresh affordance. Updates AppControls and
AppsScreen tests to assert exactly one Refresh (and none when the list
hasn't changed).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* feat(core): stop auto-invoking */list on list_changed; user pulls via Refresh (#1402)

With auto-refresh on, the list was already current by the time the
list-changed indicator appeared, making its Refresh button moot. Now the
managed Tools/Prompts/Resources state managers only flag the change on
*/list_changed (they no longer auto-refresh); the list stays as-is until
the user clicks Refresh, which fetches the new list and clears the
indicator. The connect-time initial load is unchanged.

Resource templates (no own indicator, part of the Resources screen) also
stop auto-refreshing; onRefreshResources now refreshes both resources and
templates, since a single resources/list_changed covers both. Tasks are
left auto-refreshing — they have no list-changed indicator and need live
status updates.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* docs(core): correct ManagedResourceTemplatesState header comments (#1402 review)

The class no longer subscribes to resourceTemplatesListChanged; update
the stale file/class docstrings that still claimed it syncs on that
notification to reflect connect + statusChange only.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* feat(web): add per-server 'Auto Refresh on List Changed Notifications' option (#1402)

New Options section in ServerSettingsForm with a single checkbox. When
checked, the managed Tools/Prompts/Resources (and resource templates)
state auto-refreshes on */list_changed notifications; when unchecked
(default) the notification only lights the list-changed indicator and the
user pulls via Refresh.

Plumbing: new optional autoRefreshOnListChanged on InspectorServerSettings
and StoredMCPServer, round-tripped through serverList (lifted with a false
default, persisted only when true, added to the exhaustive field-key map);
surfaced from InspectorClient via a new getServerSettings() on the protocol;
the state managers read it live at notification time to decide auto-refresh
vs flag-only. Resource templates re-subscribe to their list_changed but only
auto-refresh when the option is on (they have no indicator of their own).

Tests cover the round-trip (true persists, false omitted), the form
section (render/checked/toggle), and each state manager's on/off branch.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* fix(server): persist autoRefreshOnListChanged through validateSettings (#1402)

The PUT /api/servers write path runs settings through validateSettings,
which rebuilds the value from explicitly-named fields and silently drops
unknown keys — so autoRefreshOnListChanged never reached disk (the
serverList round-trip test passed because it calls
inspectorSettingsToStoredFields directly, bypassing this path). Validate
it as an optional boolean and include it in the built value; false is
omitted on disk by inspectorSettingsToStoredFields as before.

Adds integration tests over the real PUT path: true persists, false is
omitted, and a non-boolean is rejected (400).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* feat(web): default the Server Settings modal to the Options section (#1402)

Open 'Options' instead of 'Custom Headers' when the Server Settings modal
first opens, so the new Auto Refresh toggle is the first thing surfaced.
Updates the modal default-expanded section, the modal test's initial-state
assertions, the three header tests (now expand 'Custom Headers' first since
it's no longer open by default), and the story defaults.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* chore: drop accidentally-committed Inspector history dump; gitignore the class

83076441 swept an exported Inspector message-history JSON (manual-testing
artifact at the repo root) into the tree via git add -A. Untrack it and
extend the existing repo-root debug-artifact .gitignore block (alongside
/*.png) to cover /inspector-history-*.json so these can't be re-added.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-08 12:58:21 -04:00
Cliff Hall
49d6be6987
feat(web): add per-server Roots config + client roots capability (#1425) (#1431)
* feat(web): add per-server Roots config + client roots capability (#1425)

Add MCP roots support to the v2 web Inspector as a per-server config
section in the server settings form (no separate Roots tab/screen).

- Persistence: add `roots: Root[]` to `InspectorServerSettings` and
  `StoredMCPServer`; thread through serverList converters (lift on read,
  drop empty-uri rows / blank names on write, omit when empty) and the
  remote server's read-side drop guard + `validateSettings`.
- Capability: `setupClientForServer` always advertises the roots
  capability (`roots: cleanRoots(savedSettings?.roots ?? [])`) so the
  server can issue `roots/list` and receive `roots/list_changed`.
- Live apply: edits to a connected server's roots are pushed via
  `inspectorClient.setRoots(...)` once, on settings-dialog close — diffed
  against the client's current roots — rather than per keystroke, to
  avoid flooding the server with `roots/list_changed` / `roots/list`.
- Form: new Roots accordion section with a required URI and an optional
  name per row (unlike v1, which was URI-only), + Add Root, and remove.

Tests cover the persistence round-trip (serverList + servers-route),
the form/modal section, and reuse the existing InspectorClient
roots/`setRoots` integration coverage.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* refactor(roots): address review — dedup guards/cleanRoots, preserve extra fields, test live-apply

Responding to the PR #1431 code review:

- Dedup `isRootArray`: drop the copy inside `validateSettings` and reuse the
  module-scope guard the read path uses, so the two can't drift
  (core/mcp/remote/node/server.ts).
- Dedup the clean-roots normalizer: hoist a single exported `cleanRoots`
  into core/mcp/serverList.ts and reuse it from both
  `inspectorSettingsToStoredFields` and App.tsx (drops the local copy).
- Preserve non-form root fields (e.g. `_meta`): `cleanRoots` now spreads the
  carried-through fields and only normalizes uri/name, and the modal's
  `handleRootChange` spreads the existing root on edit — so a hand-edited
  root's `_meta` survives load + persist + edit instead of being silently
  dropped.
- Test the App live-apply-on-close path: new App.test.tsx cases assert
  setRoots is called once with cleaned roots when changed on the active
  server, and not called when the cleaned roots already match what the
  client advertises. Adds a cleanRoots unit test (blank drop + _meta
  preserve).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-05 11:08:18 -04:00
Cliff Hall
ed6eda7492
feat(web): wire up MCP task support — Tasks screen, Run-as-task, status toasts (#1422) (#1424)
Wires the ported Tasks screen + core task subsystem through App.tsx: sticky Clear Completed, cancel/refresh error toasts, core-side per-task progress correlation, Run-as-task on the Tools screen (gated on server support), per-server Task TTL, and live task-status toasts.
2026-06-04 08:49:47 -04:00
Cliff Hall
037225a9fb
feat(servers): move oauthClientSecret and stdio env values to OS keychain (#1356) (#1360)
* feat(servers): move oauthClientSecret and stdio env values to OS keychain (#1356)

mcp.json is designed to be tool-shareable (symlinked from Claude Desktop's
config, pasted into bug reports, synced via dotfiles), so storing OAuth
client secrets and stdio env values in plaintext there meant any of those
flows could leak them. Lift both into the OS keychain via @napi-rs/keyring
(active replacement for the archived keytar). The wire shape is unchanged:
the GET /api/servers handler rehydrates from the keychain so browser code
sees the same JSON; the on-disk file no longer contains the secret
material. Includes an idempotent migration that lifts plaintext from older
mcp.json files (or hand-edited ones) into the keychain on first read.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(servers): tolerate keychain unavailability on non-set ops (#1356)

CI on Linux failed because `@napi-rs/keyring` hard-errors without
libsecret, and the route handlers were touching the keychain even for
no-secret flows (defensive `deleteAllForServer` on POST/DELETE, sweep
on PUT). The user's intent for the Linux fallback was "hard fail when a
secret is actually involved" — not on every keychain touch.

Make `KeyringSecretStore.get / delete / deleteAllForServer` silently
degrade when the keychain is unavailable (return null / no-op); `set`
remains the one operation that hard-fails with
`KeychainUnavailableError`. The migration path catches the error and
preserves the disk plaintext rather than losing the secret.

Also inject `InMemorySecretStore` in `useServers.test.tsx` and
`servers-events.test.ts` so tests never touch a developer's real
keychain even when libsecret is present.

Adds `KeyringSecretStore` tests (vi.mock'd native bindings) and an
integration suite that simulates Linux-without-libsecret to verify the
tolerance contract end-to-end.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(servers): close GET migration race; reverse keychain/disk order (#1356)

Addresses code review:

1. **Concurrency**: GET /api/servers was reading + migrating outside the
   write lock, then writing inside it — a concurrent POST/PUT/DELETE
   between the read and the lock acquisition could be clobbered by the
   migration write. Also affected the first-launch seed write. Fix:
   take a fast unlocked peek; if the file is absent (seed branch) or
   carries plaintext to migrate (migration branch), re-read inside the
   write lock and decide there. Added `hasPlaintextSecrets()` as a
   pure predicate so the common no-migration path stays lock-free.

2. **Write ordering**: POST and PUT wrote disk first, then keychain.
   A keychain `set` failure mid-write left a half-configured entry on
   disk and trapped retries at 409. Reversed to keychain-first so a
   503 leaves both stores in their pre-write state. PUT in-place now
   sets new fields, writes disk, then deletes obsolete fields (a
   failed disk write leaves orphan keychain entries — recoverable —
   rather than premature deletions of fields the user still expects
   to see).

3. **Tolerance simplification**: dropped the no-entry regex in
   `KeyringSecretStore.delete` — both "no entry" and "keychain
   unavailable" collapse to the same desired outcome (the entry isn't
   there anymore), so a uniform swallow is clearer.

4. **Parallelism**: `readKeychainEntriesFor` now `Promise.all`s the
   per-field `get` calls. macOS Keychain round-trips are 10-50ms;
   serializing 5+ env vars per server × N servers is a meaningful
   wall-clock cost on GET.

5. **Spec doc**: reflects the tolerance contract (only `set`
   hard-fails) and the keychain-before-disk write ordering rationale.

New regression test in servers-route.test.ts covers the retry-after-503
contract directly.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* chore(servers): parallel keychain writes + migration partial-state comment (#1356)

Two nice-to-have observations from the re-review:

- `writeKeychainEntriesFor` now `Promise.all`s its per-field sets,
  matching the read side. No ordering requirement among distinct
  (id, field) keys; on unavailability every set rejects and Promise.all
  surfaces the first rejection (still 503 from the route handler).
- `migratePlaintextSecrets` catch block now spells out the
  partial-migration semantics: we return the original config so the
  disk plaintext stays intact, and the next successful GET retries
  with the keychain-wins branch absorbing already-set entries.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* chore(servers): parallel keychain deletes for symmetry (#1356)

Picks up the symmetry observation from the third review: `deleteKeychainFields`
now uses `Promise.all` like its read and write siblings. Distinct (id, field)
deletes have no ordering requirement, and `secretStore.delete` is already a
silent no-op on unavailability so Promise.all has no failure-mode surprise.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-26 10:33:46 -04:00
Cliff Hall
a9df501856
feat(servers): flatten mcp.json settings to top-level fields (#1358) (#1359)
* feat(servers): flatten mcp.json settings to top-level fields (#1358)

Eliminate the nested `settings` block introduced in #1352 so each
server entry's Inspector-extension fields live as direct keys alongside
`type` / `url`, matching the `.mcp.json` shape Claude Code / Cursor /
Cline write:

  - `headers` becomes a `Record<string, string>` on disk (was nested
    `settings.headers` as a pair-array)
  - `oauth` becomes a nested `{ clientId?, clientSecret?, scopes? }`
    object (was flat `settings.oauthClientId` / `oauthClientSecret` /
    `oauthScopes`)
  - `metadata`, `connectionTimeout`, `requestTimeout` move to the
    entry's top level as-is (Inspector-only fields)

The in-memory + wire shape is unchanged from #1352: `InspectorServerSettings`
keeps pair-array `headers` and flat `oauth*` fields because the form
needs them in that shape to drive controlled-component editing. The
bidirectional conversion lives in `serverList.ts`
(`storedFieldsToInspectorSettings` / `inspectorSettingsToStoredFields`)
and is invoked by `mcpConfigToServerEntries` / `serverEntriesToMcpConfig`
and by the server route's `buildStoredEntry`. The `PUT /api/servers/:id`
wire envelope keeps the preserve/clear/apply semantics from #1353 — the
backend splats validated `settings.*` onto top-level disk keys when
assembling the next on-disk shape.

Hard-cutover migration per the issue's decision 4: files written by the
one pre-#1358 v2/main build have a nested `settings` block; we drop the
node on read with a one-line warn including the server id. The persisted
headers / metadata / timeouts / OAuth credentials are intentionally lost
on first read — users re-enter them via the form (or hand-edit the file
into the flat shape). v2 has not shipped a stable release with the
nested shape, so the blast radius is dogfooders only.

The smuggle-guard in `buildStoredEntry` widens from just `settings` to
all six Inspector-extension keys (`settings`, `headers`, `metadata`,
`connectionTimeout`, `requestTimeout`, `oauth`), so a caller can't
bypass `validateSettings` by nesting any of them inside `config`.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(servers): address PR review on flatten (#1359)

- Single-source the Inspector-extension key list with `satisfies`
  (finding 1). `INSPECTOR_FIELD_KEY_MAP satisfies Record<keyof
  StoredInspectorFields, true>` in serverList.ts means a new field on
  the type forces a compile error here. The set is exported and
  re-used by the server route's smuggle guard, so adding `proxy` or
  similar in the future updates all three sites in lockstep. The PUT
  preserve path now uses a new `stripInspectorFields` helper that
  derives from the same source instead of hand-destructuring.
- Add read-path shape validation in `normalizeMcpServers` (finding 2):
  `headers: "oops"` / `metadata: 42` / `oauth: []` / non-numeric
  timeouts are dropped individually with a warn, so a hand-edited
  malformed file can't put garbage rows into the form. Mirrors the
  write-side `validateSettings` symmetry. New integration test covers
  each malformed shape with a partial fixture so a single bad key
  doesn't take out the whole entry.
- Align new warns to the `fileLogger || console.warn` fallback pattern
  (finding 3) via a small `logWarn` helper, so the legacy-drop and
  smuggle warns are visible in `npm run dev` where the logger is
  often unconfigured.
- Spec doc tweak: the CLI/TUI out-of-scope note's "writes to
  `settings.headers`" reference now reads "writes to the entry's
  top-level `headers` field on disk (post-#1358 flat shape)" (finding
  4). Avoids confusion for future readers.
- Nits: replace `current.mcpServers[originalId]!` with explicit
  narrowing; add a comment on the OAuth truthiness drop in
  `storedFieldsToInspectorSettings` mirroring the write-side comment.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(servers): address pass-2 review on flatten (#1359)

- Tighten `isNonNegNumber` with `Number.isFinite` so `Infinity` and
  `NaN` are rejected at the read boundary, matching the write-side
  intent (finding D). Hand-edited `connectionTimeout: Infinity` would
  have passed the prior check and propagated to the form.
- Add a one-line comment in `normalizeMcpServers` noting that the
  per-entry object is mutated in place via the `delete` calls — safe
  for today's callers (freshly parsed JSON, no other reference held)
  but worth flagging for the next reader (finding A).

Skipping findings B (move type guards to module scope — single call
site) and C (`isOauthObject` lenient on extra keys — reviewer
confirmed this is the intended forward-compat behavior, matching
`normalizeServerType`'s unknown-key passthrough).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* docs(servers): fix mutation-comment caller branch label (#1359)

The previous comment named the GET handler's "seed branch" as a caller
of normalizeMcpServers, but that branch returns DEFAULT_SEED_CONFIG
directly without normalizing. The actual second caller is the
file-present branch (after parseStore). Correcting the label so a
future reader looking for the seed branch caller doesn't waste time.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-25 15:52:37 -04:00
Cliff Hall
85a4b4c057
feat(servers): persist per-server settings to mcp.json (#1352) (#1353)
* feat(servers): persist per-server settings to mcp.json (#1352)

- Add optional `settings` node alongside the transport config in each
  `~/.mcp-inspector/mcp.json` entry. Round-trips through
  `mcpConfigToServerEntries` / `serverEntriesToMcpConfig` and the
  `/api/servers` POST/PUT routes.
- Drop `MCPServerConfig.headers` from `SseServerConfig` /
  `StreamableHttpServerConfig` and remove the headers textarea from
  `ServerConfigModal`. Custom headers are now entered only in
  `ServerSettingsForm` and reach the wire via `settings.headers`.
- Wire `ServerSettingsModal` into `App.tsx`; saves dispatch through a new
  `useServers.updateServerSettings` mutator. `updateServer` carries the
  existing settings across config-only saves so they aren't dropped.
- Apply settings on the *first* outbound request after a server loads —
  no need to open the settings form first:
  - `settings.headers` → SSE / streamable-http wire headers.
  - `settings.metadata` → `InspectorClientOptions.defaultMetadata`,
    merged into every outgoing `_meta` (call-time keys win).
  - `settings.requestTimeout` → `InspectorClientOptions.timeout`.
  - `settings.connectionTimeout` → Promise.race wrapper around connect().
  - `settings.oauth*` → pre-seeded OAuth client credentials.
- `RemoteConnectRequest` carries `settings` so the remote backend can
  source transport headers from the same source as the local path.
- `oauthClientSecret` is persisted in `mcp.json` alongside stdio `env`
  values, both protected by the file's `0o600` permission.
- Update `specification/v2_servers_file.md` with the new shape and the
  removal of the legacy headers field.

Tests: round-trip in `serverList.test.ts`; persistence on POST/PUT in
`servers-route.test.ts`; first-connect header injection in
`transport.test.ts`; `defaultMetadata` merging in
`inspectorClient.test.ts`; `useServers.updateServerSettings` +
`updateServer` settings-preservation in `useServers.test.tsx`.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(servers): rebuild InspectorClient on every connect so settings refresh

The previous onToggleConnection branch reused the existing InspectorClient
on a same-server reconnect, which froze settings at the moment the client
was first constructed. Editing headers, metadata, timeouts, or OAuth
credentials in the settings form was therefore invisible until the user
either switched servers or reloaded the page — surprising right after a
visible save.

Always call setupClientForServer on (re)connect so the latest
target.settings flow through to the transport's headers / requestInit, to
defaultMetadata, and to the OAuth manager.

Also adds remoteClientTransport tests that pin the wire-level contract:
settings round-trip through the /api/mcp/connect body when supplied, and
the field is omitted when no settings are configured.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(history): stop wiping pendingRequestEntries inside the connect event

State managers (ManagedToolsState, ManagedPromptsState, ManagedResourcesState,
ManagedResourceTemplatesState, ManagedRequestorTasksState) handle the
client's "connect" event by calling `void this.refresh()`. The synchronous
portion of refresh runs through SDK Protocol.request → transport.send →
MessageTrackingTransport.send → trackRequest, all before yielding to the
network — so each list request gets tracked into MessageLogState's
pendingRequestEntries inside the same connect event dispatch.

MessageLogState's own "connect" listener was registered after those state
managers (it's the last one constructed in App.tsx) and cleared
pendingRequestEntries on every connect. Listener order meant the clear ran
*after* the requests were tracked but before their responses arrived,
leaving the history with unmatched "response" entries marked PENDING.

The clear-on-disconnect (via statusChange → disconnected) already handles
session-boundary cleanup, so clear-on-connect was purely defensive and now
actively harmful. Drop the connect listener; keep the disconnect path.

Tests: updated the unit test to assert the new behavior (connect does not
clear); added an integration regression that wires a sibling connect
listener firing listTools and asserts the response folds into the request
entry instead of appearing as an orphan.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* chore: drop accidentally tracked debugging screenshot

pending-requests.png was a local debugging artifact attached to a
conversation, not source. Remove it from the tree (the working copy is
kept so the user still has it locally) and rely on the existing untracked
behavior going forward.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* test(servers): add e2e check that settings.headers reach upstream MCP

Stitches the full v2 pipeline together in one assertion:

  browser-style RemoteClientTransport
    → POST /api/mcp/connect (settings in body)
    → backend createTransportNode applies settings.headers to requestInit
    → SDK StreamableHTTPClientTransport
    → upstream MCP test server

Captures the upstream HTTP request via FetchRequestLogState and asserts
both `X-Tenant` and `X-Trace` are present on the outbound POST. Catches
any regression that breaks the wire between the form and the upstream
server in a single integration test, instead of the previous coverage
which exercised each hop in isolation.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(ServerSettingsModal): invert ListToggle compact prop so icon matches state

ListToggle's `compact` prop represents the list's *current* compact state:
true means "currently compact" and renders the expand icon to advertise
the action (open up). The settings modal was passing
`compact={allExpanded}` — exactly inverted. When all sections were open
it showed the expand icon (suggesting "open more") and when collapsed it
showed the collapse icon, opposite of every other ListToggle caller in
the app.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* style(HistoryListPanel): match ServerListScreen Export button — rename + default variant

Renames "Export JSON" to "Export" and switches from the subtle ToolbarButton
to the same `Button variant="default"` used by ServerListControls so the
two Export affordances look identical across screens. Also moves the
button to the right of the ListToggle (mirroring the order on the server
list screen) and disables it when there are no entries to export.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* style(HistoryListPanel): move Clear button to top toolbar, match Export style

Moves the Clear affordance out of the "History (N)" section header and
up to the panel toolbar alongside Export, where it now uses the same
`Button variant="default"` styling. Order in the toolbar is now:
ListToggle · Clear · Export. Clear is disabled when there are no
unpinned entries to remove (pinned entries are intentionally preserved).

ToolbarButton helper is unused after this change and dropped.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* chore: ignore local debugging screenshots at repo root

Stops `git add -A` from re-staging the `*.png` files Claude Code drops
at the repo root from attached conversation screenshots. The pattern
only matches the top-level (`/*.png`) so legitimate image assets in
subdirectories (e.g. `clients/web/public/`) still get tracked when
explicitly added.

Also untracks the two screenshots that slipped through previously
(initialize-request.png, pending-requests.png).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* style(LogStreamPanel): match HistoryListPanel button styling

Clear / Export / Copy All on the Logging screen were rendered with the
subtle ToolbarButton helper while History's equivalents use
`Button variant="default"`. Switch all three to the default variant so
the toolbars look identical across screens and mirror the disabling
behavior — each button is now disabled when `entries.length === 0`.

ToolbarButton helper is unused after this change and dropped.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(servers): address PR review — debounce save, preserve-on-omit PUT, validate shape, lift connect timeout

Round-up of fixes from https://github.com/modelcontextprotocol/inspector/pull/1353#issuecomment-4526861959:

1. ServerSettingsModal saves were firing on every keystroke (one PUT +
   full mcp.json refresh per character). App.tsx now debounces by 300ms
   and flushes on modal close so a burst of edits coalesces into one PUT
   and the form value can't flicker back mid-typing.

2. `PUT /api/servers/:id` with an omitted `settings` field used to
   silently wipe the persisted settings node. The route now treats the
   three intents distinctly:
     - field omitted  → preserve existing on-disk settings
     - explicit null  → clear the settings node
     - settings object → validate + apply
   `useServers.updateServer` is simplified to drop the client-side
   carry-through hack, and the test that documented the broken behavior
   is flipped + augmented with explicit-clear and bad-shape cases.

3. `connectionTimeout` Promise.race is moved from App.tsx into
   `InspectorClient.connect()`, reading `this.serverSettings?.connectionTimeout`.
   TUI/CLI consumers now get the same behavior; on timeout the client
   internally disconnects so the next connect starts clean.

4. Custom Headers hint in `ServerSettingsForm` notes that `Authorization`
   is owned by the OAuth flow when OAuth is configured — avoids the
   sharp edge where the SDK's authProvider silently overwrites a
   user-set Authorization header.

5. New `validateSettings` on the server route rejects malformed shapes
   (`settings: []`, `settings.headers: "oops"`, non-numeric timeouts,
   etc.) with 400 instead of letting them persist and crash the UI.

7 (nit). Renamed `settings` → `savedSettings` inside `setupClientForServer`
   so the variable holding the persisted settings doesn't shadow the
   later locally-derived values.

Follow-ups opened separately:
  #1356 — Move oauthClientSecret out of mcp.json into the OS keychain (review #6).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(servers): address PR review pass 2 — connect-timeout test, unmount cleanup, tagged intent, lenient settings read

Pass-2 review at https://github.com/modelcontextprotocol/inspector/pull/1353#issuecomment-4527089705:

(a) New integration test pins the new client-layer connect-timeout
    contract: a hanging stub transport with `connectionTimeout: 50`
    rejects with the descriptive error and lands the client in "error"
    status. Documents what TUI/CLI consumers should expect from the
    lifted Promise.race in InspectorClient.connect().

(b) useEffect cleanup clears `pendingSettingsTimerRef` on unmount so a
    route change or HMR mid-debounce can't fire one stale PUT against
    an unmounted component.

(c) Refactor the PUT-route `settingsIntent` discriminator from
    `"preserve" | "clear" | { value }` to a tagged union with `kind`,
    and consume it with a `switch` for exhaustiveness — reads cleaner
    and makes adding a fourth intent painless.

(d) `normalizeMcpServers` now runs `validateSettings` on the on-disk
    settings node and silently strips it if invalid, mirroring the
    existing lenient-on-read pattern from `normalizeServerType`. Closes
    the read/write asymmetry where a hand-edited malformed `settings`
    could survive on disk and get carried through preserve-on-PUT.
    New route test pins the strip-on-GET + no-propagate-on-preserve-PUT
    behavior.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(servers): pass-3 review — patch-style PUT, toast on close-flush fail

Pass-3 review at https://github.com/modelcontextprotocol/inspector/pull/1353#issuecomment-4529276897.

(b) `PUT /api/servers/:id` now treats both `config` and `settings` as
    optional patches:
      - field omitted → preserve the on-disk value
      - explicit body value → apply
      - settings: null → clear
    `updateServerSettings` stops reading `existing.config` from the
    in-memory `servers` snapshot, which closes the closure-capture
    hazard where a refresh between debounce-schedule and flush could
    silently revert a separate edit. The route is the single source of
    truth for transport config now. New tests cover settings-only PUT,
    rejected non-object config, and the empty-body no-op patch case.
    The previous "rejects a missing config" test is rewritten to
    document the new no-op-preserve semantics.

(c) Inline comment near the PUT rebuild loop documents that writing
    the full mcpServers map back is what gives the route its desirable
    self-healing property for malformed settings on *other* entries —
    deliberate side-effect, not an accident of normalization.

(d) `flushPendingSettings` surfaces failures via @mantine/notifications
    instead of swallowing them. The modal already closed by the time
    the flush PUT resolves, so a silent fail would leave the user
    thinking their last edits saved (especially painful for the OAuth
    client secret). The notifications wiring was already mounted in
    main.tsx.

Pass-3 (a) — settings form being effectively uncontrolled mid-edit — is
acknowledged in the reply: working as intended today; the proper fix is
internal modal state when file-watching (#1345) forces the issue.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(servers): pass-4 review — strip smuggled settings out of config

Pass-4 review at https://github.com/modelcontextprotocol/inspector/pull/1353#issuecomment-4529861349.

Main finding: `normalizeServerType` spreads unknown keys, so a body
that nested `settings` inside `config` would smuggle a settings field
onto the stored entry without ever passing through `validateSettings`.
Strip the settings key off the incoming config in `buildStoredEntry`
so `validateSettings` remains the single write path for the settings
node — the "one source of truth" invariant pass 2 set up holds again.

Two new tests pin the strip on both routes:
  - POST with `config.settings = { bogus }` lands an entry with no
    settings node on disk.
  - PUT with `config.settings = { bogus }` + `settings: null` clears
    the real settings *and* doesn't re-attach the bogus payload via
    the spread.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(servers): pass-5 review — absorb late connect rejection, tighten validateSettings, log smuggle warning

Pass-5 review at https://github.com/modelcontextprotocol/inspector/pull/1353#issuecomment-4529954490.

Main finding: when the connect-time `Promise.race` lost to the timeout,
the original `this.client.connect(this.transport)` promise was left
pending. After `disconnect()` tore the transport down, real transports
(SSE / streamable-http) would reject that promise later — with no
handler attached, producing a Node `unhandledRejection` (and a vitest
suite warning). Attach a no-op `.catch` right after creating the
connect promise so Node sees the late rejection as handled.

Nit (a): `validateSettings` was casting the raw object through to
`InspectorServerSettings`, which let unknown keys ride along onto disk.
Replaced the cast with an explicit pick-and-build over the known
fields. Unknown stowaways now silently drop on the way through. New
route test pins the behavior.

Nit (b): `buildStoredEntry` now logs a `warn` via the route's pino
logger when an incoming `config` carries a `settings` key. The strip
is still defensive (it isn't a documented contract) but the warning
lets a misconfigured client find out about the wasted field instead
of debugging a silent drop.

Nit (c) — the defensive `?? {}` fallback in `buildStoredEntry` —
acknowledged in the review reply; left in place as belt-and-braces.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(servers): pass-6 polish — scope absorber, thread id, drop empty OAuth, guard `in`

Pass-6 review at https://github.com/modelcontextprotocol/inspector/pull/1353#issuecomment-4529979135. Reviewer signed off as ready; landing the four marginal cleanups since they're all small.

(a) `connectPromise.catch(() => {})` moves inside the
    `if (connectTimeoutMs > 0)` branch. The await-only path propagates
    rejection cleanly through the outer try/catch — the absorber is
    only needed when the race leaves the original promise unattended.
    Code now reads as "absorber is tied to the race," which is the
    real invariant.

(b) Thread `id` (POST id, PUT newId) through `buildStoredEntry` and
    include it in the smuggle warning's pino bindings. Two clients
    smuggling simultaneously are distinguishable in the log instead
    of indistinguishable.

(c) `validateSettings` coerces empty-string OAuth fields to absent.
    The form emits `""` when the user clears an input, and an empty
    `oauthClientId` on disk would later be misread as "OAuth configured."
    New route test pins it.

(d) `buildStoredEntry` adds a null/object guard before `"settings" in
    configObj`. The route layer pre-checks this on POST and PUT, but
    the helper's `unknown` parameter is a weak contract; the guard
    makes it safe to call from anywhere.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* docs(spec): reflect settings persistence + patch-PUT contract in v2_servers_file

The doc was authored when `mcp.json` only stored the server list. Bring it
forward to match what shipped in #1352 / PR #1353:

- Summary calls out that the file also stores per-server settings and
  links into the Per-server settings section.
- On-disk format note explains that `settings` is an optional Inspector-
  specific extension that other MCP tools ignore.
- New top paragraph on the Per-server settings section explains the
  basic-config / settings UI split rationale (simpler form for the
  common case, advanced settings tucked behind a second dialog).
- UI bullet is rewritten to match the patch-style PUT semantics that
  emerged across the review cycle: settings-only and config-only
  PUTs preserve their counterpart inside the write lock, so neither
  modal can silently clobber the other half. The earlier "must
  re-send settings on PUT" hack is gone.
- New bullets capture the save cadence (300ms debounce + flush-on-close
  + failure toast), the patch-PUT contract (omit-preserve / null-clear /
  rename), and the write-path / read-path validator gates.
- Secret storage bullet links to #1356 (OS-keychain follow-up).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* docs(spec): show a third entry with the optional settings node

The On-disk format example demonstrated only basic stdio entries. Add a
streamable-http entry with a populated `settings` node so readers can
see the shape inline rather than having to scroll to the Per-server
settings section. Inline comment in the block cross-links there for the
full contract and notes that other MCP tools ignore the extension key.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-24 19:23:26 -04:00
Cliff Hall
420da2e415
feat(servers): export server list as mcp.json download (#1346) (#1351)
* feat(servers): export server list as mcp.json download (#1346)

Adds an Export button to the Servers screen, next to "Add Servers".
Clicking it downloads the current server list as a canonical mcp.json
file (2-space indent, same shape serializeStore writes), so the user
can hand it off, sync it to another machine, or symlink into Claude
Desktop / Cursor / Cline.

Wiring:
- ServerListControls: new Export Button (variant=default), disabled
  when serverCount === 0 (nothing to download).
- ServerListScreen / InspectorView: thread `onExport` / `onServerExport`
  through.
- App.tsx: onServerExport runs serverEntriesToMcpConfig on the in-memory
  servers list, JSON.stringify with 2-space indent, and triggers a Blob
  download via a temporary anchor (appended to body for Firefox
  compatibility, then removed; object URL revoked).

Tests:
- ServerListControls unit tests cover button-count (toggle hidden vs
  shown, Export always present), disabled-on-empty, click fires onExport.
- ServerListControls.stories grows play functions for both stories —
  WithServers asserts Export is enabled + click fires the spy in real
  Chromium, WithoutServers asserts Export is disabled.
- Existing screen + view tests / stories updated for the new prop.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(servers): address PR #1351 review (extract helpers + exception safety + guard)

Substantive items from the review:

1. Serialization format parity (review #1): added
   `serializeMcpConfig(entries)` to core/mcp/serverList.ts — a
   browser-safe helper that runs `serverEntriesToMcpConfig` then
   stringifies with 2-space indent. Single source of truth for export
   formatting; can't drift from serializeStore's on-disk shape.

2. Exception safety on the anchor cleanup (review #2) + a direct test
   for the App.tsx download wiring (review #6): extracted
   `downloadJsonFile(filename, json)` to clients/web/src/lib/
   downloadFile.ts. removeChild + revokeObjectURL run in a `finally`
   so a thrown click() doesn't leak the DOM node or the object URL.
   Unit-tested under happy-dom with URL.createObjectURL mocked
   (happy-dom doesn't ship it).

3. Empty-list guard (review #5): App.tsx onServerExport bails when
   `servers.length === 0`. The button's disabled prop already prevents
   the UI path, but the handler is now locally correct against any
   future programmatic caller (storybook, keyboard shortcut, etc.).

Acknowledged but not changed:
- Tooltip on the disabled Export button (review #3) — Mantine's
  disabled-button + Tooltip wart wants a span wrapper + custom events
  config. Optional per the reviewer; deferred.
- Repeated exports → `mcp (1).json` browser suffix (review #4) — a
  deliberate trade-off since `mcp.json` is the conventional name a user
  would expect to symlink into Claude Desktop / Cursor / etc.

Tests: 1647 unit (+6) + 410 integration + 306 storybook = 2363 green.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-23 15:15:56 -04:00
Cliff Hall
db1916cd34
feat(servers): persist server list to ~/.mcp-inspector/mcp.json (#1343) (#1349)
* feat(servers): persist server list to ~/.mcp-inspector/mcp.json (#1343)

Replaces the hardcoded SEED_SERVERS in App.tsx with a file-backed list at
~/.mcp-inspector/mcp.json. Full CRUD round-trips through new /api/servers
routes; first launch writes the two existing seeds if the file is absent.

Backend (core):
- store-io: getDefaultMcpConfigPath() — sibling of getDefaultStorageDir()
- core/mcp/serverList.ts: pure converters MCPConfig <-> ServerEntry[],
  DEFAULT_SEED_CONFIG, and normalizeServerType (moved from node/config.ts
  to keep serverList.ts Node-free)
- core/mcp/remote/node/server.ts: GET/POST/PUT/:id/DELETE/:id /api/servers
  routes, plus RemoteServerOptions.mcpConfigPath defaulting to
  getDefaultMcpConfigPath(). Ids validated with validateStoreId.

Frontend:
- core/react/useServers.ts: { servers, loading, error, refresh, addServer,
  updateServer, removeServer } over the new endpoints
- App.tsx: drops SEED_SERVERS, wires useServers, disconnects on remove of
  the active server, follows id on rename of the active server
- ServerConfigModal: Add/Edit/Clone form (stdio: command/args/env/cwd;
  sse/streamable-http: url/headers as one-per-line text)
- ServerRemoveConfirmModal: confirm-on-remove with id + transport summary

Tests (52 new):
- unit: getDefaultMcpConfigPath env-var permutations, serverList round-trip,
  hook flows against real Hono app.fetch (no TCP), modal forms + validation
- integration: /api/servers routes against a real createRemoteApp + tmp file
- stories with play functions for both new modals

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(servers): address PR #1349 review (correctness + nits)

Bugs:
- normalizeServerType: validate against the allowed set and default
  unknown / non-string types to "stdio" (matches the missing-type case).
  Prevents a hand-edited {"type":"websocket"} from leaking past `as
  ServerType` and surprising downstream narrowing.
- onConfirmRemove: when removing the active server, also destroy() the 9
  state managers and null them + the client out so they GC immediately
  instead of waiting for the next server switch.
- /api/servers mutating routes: serialize POST/PUT/DELETE through an
  in-process write-lock so concurrent read-modify-write cycles can't lose
  updates. New integration test fires 25 parallel POSTs and asserts every
  entry lands.
- readMcpConfig comment: update to match actual behavior (valid-JSON file
  with no `mcpServers` → empty; invalid JSON → 500 from the outer try, so
  corruption surfaces rather than silently emptying the list). New
  integration tests pin the 500 path on both GET and POST.

Nits:
- Add --inspector-surface-subtle token, use it in ServerRemoveConfirmModal
  instead of the raw Mantine var.
- Rename useServers buildHeaders boolean param to includeJsonBody.
- Add a comment on the env-value vs header-value trim asymmetry (env
  values preserve trailing whitespace; header values follow RFC 7230).

Tests: 1630 unit + 404 integration + 306 storybook all green.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(ServerConfigModal): null currentTarget in functional setState updater

React nulls SyntheticEvent.currentTarget after the synchronous handler
returns. Reading e.currentTarget.value inside `setForm((f) => ...)`
worked under happy-dom (which keeps currentTarget around) but threw
"Cannot read properties of null (reading 'value')" on the first
keystroke in a real browser. Capture the value before the functional
updater closes over it.

All seven onChange handlers in ServerConfigModal had the bug. Extended
the AddEmpty storybook play to type into Server ID and Command — the
real-Chromium runner now exercises this path so a future regression
fails the test suite instead of the user.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(remote-server): surface stderr + transport_error when subprocess crashes during startup

A stdio subprocess that spawns successfully but exits before the browser
opens the SSE events stream used to vanish into a bare "Session not
found" 404. The fix has three parts:

1. RemoteSession.markTransportDead always pushes the transport_error
   event (via pushEvent's queue) rather than dropping it when no
   consumer is attached. The queued event drains when the consumer
   eventually arrives.

2. /api/mcp/connect's transport.onclose handler no longer deletes the
   session immediately when no consumer is attached. Instead it holds
   the session (with queued stderr + transport_error) for a 30s grace
   window so the events endpoint can drain it. A timeout sweeps if no
   consumer ever connects.

3. /api/mcp/events detects isTransportDead after attaching the consumer
   (which just drained the queue), yields once to flush, then closes
   the stream and deletes the session.

End result: the user sees the actual error (e.g. "Cannot find module"
from stderr + the transport-closed reason) instead of a confusing 404.

Tests:
- New unit tests (clients/web/src/test/integration/mcp/remote/remote-session.test.ts)
  cover the queueing behavior, live delivery, and clearEventConsumer
  signaling under all transport-state permutations.
- New integration test (connect-crash.test.ts) spawns a node subprocess
  that writes to stderr and exits, then verifies the events stream
  delivers both the stderr line and the transport_error event before
  closing — the exact scenario from PR #1349.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(state): gate listRequestorTasks on the server's `tasks` capability

ManagedRequestorTasksState was calling tasks/list on every connect.
Servers that don't advertise the `tasks` capability (the common case)
reply with -32601 "Method not found", which then surfaces in the
inspector's console for every connect.

Skip the call when the server doesn't declare `tasks` — empty tasks
list is the right semantics. Existing tests opt into capabilities so
the live-path coverage is preserved; two new tests pin the gated
behavior (direct refresh + connect-event-triggered refresh).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(App): clear activeServerId on disconnect so other server cards re-enable

ServerCard dims any card whose id differs from `activeServer` (and marks
it inert), so cards stay non-interactive after a disconnect until the
user reconnects elsewhere. activeServerId was set on connect but never
reset on disconnect, leaving the whole screen locked to the just-
disconnected card.

Subscribe to InspectorClient's `disconnect` event and clear
activeServerId there. Covers all three disconnect paths uniformly:

- user toggles the connected card off
- user clicks the header Disconnect button
- mid-session transport failure (subprocess exit / network drop)

Event-based instead of effect-based on connectionStatus to avoid the
first-render-clobbers-new-id trap (status starts as "disconnected" for
a freshly-created client before connect() runs).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-23 14:26:23 -04:00