Increase default request timeout to 5 minutes

- Changed MCP_SERVER_REQUEST_TIMEOUT from 10s to 5m (300000ms)
- Supports elicitation tools and other long-running operations
- Updated documentation to clarify client-side vs server-side timeouts
- Users can still customize via UI config or URL parameters

client/src/lib/configurationTypes.ts

@@ -14,7 +14,8 @@ export type ConfigItem = {
  */
 export type InspectorConfig = {
   /**
-   * Maximum time in milliseconds to wait for a response from the MCP server before timing out.
+   * Client-side timeout in milliseconds. The Inspector will cancel the request if no response
+   * is received within this time. Note: This is independent of any server-side timeouts.
    */
   MCP_SERVER_REQUEST_TIMEOUT: ConfigItem;
 

client/src/lib/constants.ts

@@ -43,8 +43,9 @@ export const DEFAULT_MCP_PROXY_LISTEN_PORT = "6277";
 export const DEFAULT_INSPECTOR_CONFIG: InspectorConfig = {
   MCP_SERVER_REQUEST_TIMEOUT: {
     label: "Request Timeout",
-    description: "Timeout for requests to the MCP server (ms)",
-    value: 10000,
+    description:
+      "Client-side timeout (ms) - Inspector will cancel requests after this time",
+    value: 300000, // 5 minutes - increased to support elicitation and other long-running tools
     is_session_item: false,
   },
   MCP_REQUEST_TIMEOUT_RESET_ON_PROGRESS: {