inspector/clients/web/src/components/groups/ConnectionInfoContent/ConnectionInfoContent.stories.tsx
Cliff Hall e2c75da5ce
Extensions: Connection Info both eras + io.modelcontextprotocol/ui advertisement (Phase 3 of #1633) (#1744)
* Extensions: Connection Info both eras + io.modelcontextprotocol/ui advertisement (Phase 3 of #1633)

Completes the Extensions surfacing and advertises the MCP Apps UI extension.

core/mcp/extensions.ts:
- Add UI_EXTENSION_KEY ("io.modelcontextprotocol/ui") and MCP_APP_MIME_TYPE
  ("text/html;profile=mcp-app") — mirrors of ext-apps' EXTENSION_ID /
  RESOURCE_MIME_TYPE (hardcoded: the constants live on the package's /server
  subpath or an extensionless re-export that doesn't resolve under NodeNext).
- Registry entries gain an optional `advertisement` value; the builder stamps
  it (default {}). Add the `ui` entry, default-advertised with
  `{ mimeTypes: ["text/html;profile=mcp-app"] }` — the Inspector always renders
  App tools. No ext-apps cast needed: the extensions value type is `object`.

ConnectionInfoContent:
- Source server extensions from the negotiated `capabilities.extensions`
  (getServerCapabilities, era-transparent) instead of the modern-only
  discoverResult, so a LEGACY server advertising extensions renders them too.
- Add a two-column "Server Extensions" / "Advertised Extensions" section (the
  Inspector's own advertised map), mirroring the server/client capability
  columns. Drop the now-redundant Extensions row from the modern Discovery
  section (Supported versions stays).

Tests: extensions.test.ts covers the ui entry + advertisement value and the
per-extension enable/disable; ConnectionInfoContent.test.tsx covers legacy
server extensions (no discovery), the advertised-extensions column, and the
em-dash empty states. npm run ci green (the one InspectorView localStorage
failure is a known flake, passes on re-run).

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

* Extensions: address Phase 3 review (mime drift-guard, story, exact em-dashes)

- extensions-mimetype.test.ts (integration/node): assert MCP_APP_MIME_TYPE
  equals ext-apps' real RESOURCE_MIME_TYPE (imported) and that the client
  advertises it — a genuine drift guard, replacing the tautological literal
  check in the unit test (which now just asserts the type).
- ConnectionInfoContent Modern story: carry the tasks extension on
  initializeResult.capabilities too, so the Server Extensions row demonstrates
  it (the row now reads negotiated server capabilities, not discoverResult).
- Tighten the em-dash assertions from ">= N" to exact counts (3/3/2) now that
  the two extension sections em-dash by default.

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

* Extensions: drift-guard UI_EXTENSION_KEY against ext-apps EXTENSION_ID (review)

Address the Phase 3 re-review nit: the extension id was the other half of the
same drift risk (a server keys its Apps lookup on it). Import ext-apps'
EXTENSION_ID from the /server subpath in the node integration test (fine there;
the browser build is what avoids /server) and assert UI_EXTENSION_KEY === it.

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

* Extensions: clone the registry advertisement so builds never alias it (review)

Address the Phase 3 re-review's optional defensive nit: buildClientExtensions
returned the same object reference as the ADVERTISABLE_EXTENSIONS entry for the
ui advertisement, so an in-place mutation of a stamped value (e.g.
extensions[ui].mimeTypes) could corrupt the registry for later connections.
structuredClone the advertisement on stamp; add a test asserting a mutated
build doesn't leak into the next one. Nothing mutates it today — purely
defensive.

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

* Extensions: add #1740 Connection Info proof screenshots

End-to-end smoke test in the web client against the legacy
advertised-extensions-http.json server: the Connection Info modal shows the new
era-transparent Server Extensions / Advertised Extensions section, with
Advertised Extensions listing io.modelcontextprotocol/tasks + io.modelcontextprotocol/ui
(the new ui advertisement), and only ui after toggling Tasks off and reconnecting.

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>
2026-07-23 10:11:36 -04:00

127 lines
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TypeScript

import type {
ClientCapabilities,
InitializeResult,
} from "@modelcontextprotocol/client";
import type { Meta, StoryObj } from "@storybook/react-vite";
import { ConnectionInfoContent } from "./ConnectionInfoContent";
const fullResult: InitializeResult = {
protocolVersion: "2025-03-26",
serverInfo: { name: "Everything Server", version: "2.1.0" },
capabilities: {
tools: { listChanged: true },
resources: { subscribe: true, listChanged: true },
prompts: { listChanged: true },
logging: {},
completions: {},
},
instructions:
"This server provides access to the project management system. Use the list_projects tool first to discover available projects before querying tasks. Rate limiting applies: max 60 requests per minute.",
};
const fullClientCaps: ClientCapabilities = {
roots: { listChanged: true },
sampling: {},
elicitation: {},
experimental: {},
};
const meta: Meta<typeof ConnectionInfoContent> = {
title: "Groups/ConnectionInfoContent",
component: ConnectionInfoContent,
};
export default meta;
type Story = StoryObj<typeof ConnectionInfoContent>;
export const FullCapabilities: Story = {
args: {
initializeResult: fullResult,
clientCapabilities: fullClientCaps,
transport: "stdio",
},
};
export const ModernEra: Story = {
args: {
initializeResult: {
protocolVersion: "2026-07-28",
serverInfo: { name: "Modern Server", version: "2.0.0" },
capabilities: {
tools: { listChanged: true },
resources: { subscribe: true },
// The Server Extensions row reads the negotiated server capabilities
// (era-transparent), not discoverResult — carry it here too so the
// modern story demonstrates the extension. (#1740)
extensions: {
"io.modelcontextprotocol/tasks": {},
},
},
},
clientCapabilities: fullClientCaps,
transport: "streamable-http",
protocolEra: "modern",
discoverResult: {
supportedVersions: ["2026-07-28", "2025-11-25"],
serverInfo: { name: "Modern Server", version: "2.0.0" },
capabilities: {
tools: { listChanged: true },
resources: { subscribe: true },
extensions: {
"io.modelcontextprotocol/tasks": {},
},
},
},
},
};
export const MinimalCapabilities: Story = {
args: {
initializeResult: {
protocolVersion: "2025-03-26",
serverInfo: { name: "Simple Server", version: "1.0.0" },
capabilities: {
tools: { listChanged: false },
},
},
clientCapabilities: {
roots: { listChanged: true },
},
transport: "streamable-http",
},
};
export const WithInstructions: Story = {
args: {
initializeResult: fullResult,
clientCapabilities: {
roots: { listChanged: true },
sampling: {},
},
transport: "stdio",
},
};
export const WithOAuth: Story = {
args: {
initializeResult: {
protocolVersion: "2025-03-26",
serverInfo: { name: "Authenticated Server", version: "3.0.0" },
capabilities: {
tools: { listChanged: true },
resources: { subscribe: true },
},
},
clientCapabilities: {
roots: { listChanged: true },
},
transport: "streamable-http",
oauth: {
protocol: "standard",
authorized: true,
authUrl: "https://auth.example.com/oauth2/authorize",
scopes: ["read", "write", "admin"],
accessToken: "eyJhbGciOiJSUzI1NiIs...truncated",
},
},
};