Leaderboard/Google Calendar
MCP ServerScored via MCP protocol probing: initialize handshake, tools/list conformance, and ping + tool invocation performance.

Google Calendar

MCP server for Google Calendar : create events, manage calendars, check availability, and share calendars through 28 tools via the Model Context Protocol. ## Features - Create, update, and delete calendar events (timed and all-day) - Quick add events from natural language - Manage recurring events with RRULE support - Share calendars with ACL (access control) management - Check availability with free/busy queries - Manage multiple calendars and subscriptions - Full OAuth 2.0 authentication with refresh tokens ## 28 Tools **Events (10)**: List, get, create, update (PUT), patch (PATCH), delete, quick add, move, list instances, import **CalendarList (5)**: List subscribed calendars, get entry, add (subscribe), update display settings, remove (unsubscribe) **Calendars (5)**: Get metadata, create, update, delete, clear all events **ACL (5)**: List rules, get rule, create (share), update permission, delete (revoke) **Utility (3)**: Query free/busy, get color palette, list settings ## Configuration - `GOOGLE_CLIENT_ID` : OAuth 2.0 Client ID from Google Cloud Console - `GOOGLE_CLIENT_SECRET` : OAuth 2.0 Client Secret - `GOOGLE_REFRESH_TOKEN` : Refresh token with Calendar scope

54/100
Operational Score
Score Breakdown
Availability27/30
Conformance10/30
Performance17/40
Key Metrics
Uptime 30d
99.7%
P95 Latency
243.7ms
Conformance
Fail
Trend
Stable
What's Being Tested
Availability
HTTP health check to the service endpoint
Responded with HTTP 401 in 210ms
ConformanceNot tested
MCP initialize handshake + tools/list
Performance
MCP ping + zero-arg tool invocation benchmarking
P95 latency: 243ms, task completion: 0%
Recent Probe Results
TimestampStatusLatencyConformance
Apr 2, 2026success210.4msPass
Apr 2, 2026success193.1msPass
Apr 2, 2026success174.7msPass
Apr 2, 2026success166.1msPass
Apr 2, 2026success184.3msPass
Apr 2, 2026timeout0msFail
Apr 2, 2026success155.4msPass
Apr 2, 2026success195.5msPass
Apr 2, 2026success196.8msPass
Apr 2, 2026success177.2msPass
Source Registries
smithery
First Seen
Mar 26, 2026
Last Seen
Apr 1, 2026
Last Probed
Apr 2, 2026