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feat(client): add timing information to request history and notifications #1052

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feat(client): add timing information to request history and notifications #1052

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1dc100f
feat(client): add timing information to request history and notificat…
Feb 3, 2026
c93c343
Merge branch 'main' into KYK/mcp-call-timing
olaservo Feb 5, 2026
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11 changes: 9 additions & 2 deletions client/src/App.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@ import {
Task,
GetTaskResultSchema,
} from "@modelcontextprotocol/sdk/types.js";
import { TimestampedNotification } from "./lib/notificationTypes";
import { OAuthTokensSchema } from "@modelcontextprotocol/sdk/shared/auth.js";
import type {
AnySchema,
Expand Down Expand Up @@ -154,7 +155,9 @@ const App = () => {
},
);
const [logLevel, setLogLevel] = useState<LoggingLevel>("debug");
const [notifications, setNotifications] = useState<ServerNotification[]>([]);
const [notifications, setNotifications] = useState<TimestampedNotification[]>(
[],
);
const [roots, setRoots] = useState<Root[]>([]);
const [env, setEnv] = useState<Record<string, string>>({});

Expand Down Expand Up @@ -366,7 +369,11 @@ const App = () => {
config,
connectionType,
onNotification: (notification) => {
setNotifications((prev) => [...prev, notification as ServerNotification]);
const timestamped: TimestampedNotification = {
notification: notification as ServerNotification,
receivedAt: new Date().toISOString(),
};
setNotifications((prev) => [...prev, timestamped]);

if (notification.method === "notifications/tasks/list_changed") {
void listTasks();
Expand Down
69 changes: 55 additions & 14 deletions client/src/components/HistoryAndNotifications.tsx
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Original file line number Diff line number Diff line change
@@ -1,16 +1,22 @@
import { ServerNotification } from "@modelcontextprotocol/sdk/types.js";
import { useState } from "react";
import JsonView from "./JsonView";
import { Button } from "@/components/ui/button";
import { RequestHistoryEntry } from "@/lib/types/requestHistory";
import { TimestampedNotification } from "@/lib/notificationTypes";
import {
formatDuration,
formatTimestamp,
formatTimestampFull,
} from "@/utils/timeUtils";

const HistoryAndNotifications = ({
requestHistory,
serverNotifications,
onClearHistory,
onClearNotifications,
}: {
requestHistory: Array<{ request: string; response?: string }>;
serverNotifications: ServerNotification[];
requestHistory: RequestHistoryEntry[];
serverNotifications: TimestampedNotification[];
onClearHistory?: () => void;
onClearNotifications?: () => void;
}) => {
Expand Down Expand Up @@ -52,7 +58,7 @@ const HistoryAndNotifications = ({
{requestHistory
.slice()
.reverse()
.map((request, index) => (
.map((entry, index) => (
<li
key={index}
className="text-sm text-foreground bg-secondary py-2 px-3 rounded"
Expand All @@ -63,18 +69,44 @@ const HistoryAndNotifications = ({
toggleRequestExpansion(requestHistory.length - 1 - index)
}
>
<span className="font-mono">
<span className="font-mono flex items-center gap-2">
{requestHistory.length - index}.{" "}
{JSON.parse(request.request).method}
{JSON.parse(entry.request).method}
{entry.durationMs !== undefined && (
<span className="text-xs bg-blue-100 dark:bg-blue-900 text-blue-700 dark:text-blue-300 px-1.5 py-0.5 rounded-full">
{formatDuration(entry.durationMs)}
</span>
)}
</span>
<span>
<span className="flex items-center gap-2">
<span className="text-xs text-muted-foreground">
{formatTimestamp(entry.requestedAt)}
</span>
{expandedRequests[requestHistory.length - 1 - index]
? "▼"
: "▶"}
</span>
</div>
{expandedRequests[requestHistory.length - 1 - index] && (
<>
<div className="mt-2 pt-2 border-t border-border">
<div className="text-xs text-muted-foreground mb-2 space-y-1">
<div>
Requested: {formatTimestampFull(entry.requestedAt)}
</div>
{entry.respondedAt && (
<div>
Responded:{" "}
{formatTimestampFull(entry.respondedAt)}
{entry.durationMs !== undefined && (
<span className="ml-1">
({formatDuration(entry.durationMs)})
</span>
)}
</div>
)}
</div>
</div>
<div className="mt-2">
<div className="flex justify-between items-center mb-1">
<span className="font-semibold text-blue-600">
Expand All @@ -83,19 +115,19 @@ const HistoryAndNotifications = ({
</div>

<JsonView
data={request.request}
data={entry.request}
className="bg-background"
/>
</div>
{request.response && (
{entry.response && (
<div className="mt-2">
<div className="flex justify-between items-center mb-1">
<span className="font-semibold text-green-600">
Response:
</span>
</div>
<JsonView
data={request.response}
data={entry.response}
className="bg-background"
/>
</div>
Expand Down Expand Up @@ -128,7 +160,7 @@ const HistoryAndNotifications = ({
{serverNotifications
.slice()
.reverse()
.map((notification, index) => (
.map((timestamped, index) => (
<li
key={index}
className="text-sm text-foreground bg-secondary py-2 px-3 rounded"
Expand All @@ -143,9 +175,12 @@ const HistoryAndNotifications = ({
>
<span className="font-mono">
{serverNotifications.length - index}.{" "}
{notification.method}
{timestamped.notification.method}
</span>
<span>
<span className="flex items-center gap-2">
<span className="text-xs text-muted-foreground">
{formatTimestamp(timestamped.receivedAt)}
</span>
{expandedNotifications[
serverNotifications.length - 1 - index
]
Expand All @@ -157,13 +192,19 @@ const HistoryAndNotifications = ({
serverNotifications.length - 1 - index
] && (
<div className="mt-2">
<div className="pt-2 border-t border-border">
<div className="text-xs text-muted-foreground mb-2">
Received:{" "}
{formatTimestampFull(timestamped.receivedAt)}
</div>
</div>
<div className="flex justify-between items-center mb-1">
<span className="font-semibold text-purple-600">
Details:
</span>
</div>
<JsonView
data={JSON.stringify(notification, null, 2)}
data={JSON.stringify(timestamped.notification, null, 2)}
className="bg-background"
/>
</div>
Expand Down
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