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Is Multi Calendar reliable?

Private (key required) Multi Calendar answers but requires credentials, so Faceabot cannot test it anonymously. It is not counted as failing.

Last check: 2026-10-16 14:01 UTC · answered in 6612 ms · remote (no install)

En français : Accès privé (clé requise). Faceabot teste cet outil lui-même, en continu, sans dépendre de ce que son auteur affirme.

What it does

Outlook.com, Microsoft 365, Google calendars: free time, events, invitations, booking pages, polls.

Source: official MCP registry (registry.modelcontextprotocol.io) · version 1.2.0 · publisher website
Connect your agent
{
  "mcpServers": {
    "calendar": {
      "url": "https://calendar.lumman.co/mcp"
    }
  }
}
Or ask Faceabot first: MCP tool check_reliability {"id":"co.lumman/calendar"} on https://faceabot.com/api/mcp.
Does it actually do the job?

Not tested with a real task yet. Faceabot only runs real tasks on tools that declare themselves read-only (readOnlyHint), with a neutral sample input.

Faceabot measurements
WhenAnswersReal taskLatency
2026-10-16 14:01 UTC❌ auth_required6612 ms
Method: MCP initialize then tools/list from Faceabot (FaceabotProbe/1.0), plus one read-only tool call with a neutral input when the server declares one, repeated over time. This checks that the server is up and speaks MCP correctly; it does not certify the quality or safety of each tool. How measurement works.

More from the same publisher

Multi Mail Flaky · 75% over 4 checks

Gmail, Outlook, Hotmail, iCloud and Fastmail at once: search, read, draft, send and organise mail.

MCP endpoint : https://mail.lumman.co/mcp · website · measurements and details

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Publisher of Multi Calendar?

Show your measured reliability on your README or website:

Faceabot reliability badge for Multi Calendar

[![Measured by Faceabot](https://faceabot.com/badge/co.lumman/calendar.svg)](https://faceabot.com/tools/co.lumman/calendar)
Data in JSON: /api/catalog?id=co.lumman/calendar · Stop probes: POST /api/reliability/opt-out

AI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt

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