inspector/clients/cli/src/handlers/connect-timeout.ts
cliffhall b33532c024 feat: allow complex JSON values in request _meta
Closes #1910

`_meta` was typed `Record<string, string>` end to end in the Inspector —
on disk as a `{ key, value }[]` pair array, in the Server Settings form as
key/value rows, and in every request verb's per-call metadata parameter.
Nothing in the MCP spec restricts a `_meta` value to a string, and the SDK
models the field as a `z.looseObject`, so the restriction was ours alone.

Widen the whole path to `RequestMetadata` (`Record<string, JsonValue>`):

- Per-server default metadata is a JSON **object** on disk and in memory.
  The pre-#1910 pair array is still read (`normalizeStoredMetadata`) so an
  existing `mcp.json` keeps working; it is never written back, so a save
  migrates the entry.
- The Server Settings → Request Metadata section is a JSON editor
  (`JsonObjectInput`) instead of key/value rows — rows cannot express an
  object value. It keeps the typed text as the display source and emits
  only parsed JSON, the same draft split `SchemaJsonField` uses, so the box
  stays typeable; invalid text is flagged inline and not applied.
- The CLI stops flattening `--metadata` / `--tool-metadata` through
  `metaValueToString`. Those values were already JSON-parsed, so
  `trace={"id":"abc"}` used to reach the wire as the *string* `{"id":"abc"}`
  and now reaches it as an object.
- `servers/show` redaction replaces a sensitive key's whole value rather
  than a string, so a structured value cannot leak through its members.
- `progressTokenOf` narrows the reserved `progressToken` key back to
  `string | number` before it reaches the SDK; any other JSON still travels
  inside `_meta` but wires up no progress callback.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0177mPHAdECD18nLLCTwR5rh
Signed-off-by: cliffhall <cliff@futurescale.com>
2026-08-23 12:23:40 -04:00

35 lines
1 KiB
TypeScript

import {
DEFAULT_MAX_FETCH_REQUESTS,
DEFAULT_TASK_TTL_MS,
type InspectorServerSettings,
} from "@inspector/core/mcp/types.js";
/**
* Default connect timeout (ms) for ad-hoc server invocations. Without this an
* unreachable server hangs the CLI indefinitely.
*/
export const DEFAULT_CONNECT_TIMEOUT_MS = 15000;
/**
* Apply a connection timeout to a resolved server's settings, building a
* minimal {@link InspectorServerSettings} when none came from the file.
*/
export function withConnectTimeout(
settings: InspectorServerSettings | undefined,
connectionTimeout: number | undefined,
): InspectorServerSettings | undefined {
if (connectionTimeout === undefined) return settings;
if (settings) return { ...settings, connectionTimeout };
return {
headers: [],
metadata: {},
env: [],
connectionTimeout,
requestTimeout: 0,
taskTtl: DEFAULT_TASK_TTL_MS,
maxFetchRequests: DEFAULT_MAX_FETCH_REQUESTS,
autoRefreshOnListChanged: false,
paginatedLists: false,
roots: [],
};
}