Microsoft 365 Calendar

NPM · @MINDSTONE/MCP-SERVER-MICROSOFT-CALENDAR · SCANNED AUG 3

Microsoft 365 Outlook calendar via Graph: list, get, create, update, respond, free/busy.

Available components

npm · @mindstone/mcp-server-microsoft-calendar 77

+31 this week 77 77 Trust /100

Trust breakdown (6 categories)

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score →

Supply Chain Security87

No malware found by supply-chain analysis.Pass
Only part of the dependency tree could be resolved (105 of 109), so this covers what we could see, not the whole tree.Partial
No install/post-install scripts declared.Pass
Only part of the dependency tree could be resolved (105 of 109), so this covers what we could see, not the whole tree. View diagnostics → Partial

Provenance & Transparency84

Source repository is publicly reachable at the declared URL. View diagnostics → Pass
Cryptographically verified build provenance (signed, bound to mindstone/mcp-servers). View diagnostics → Pass
License check failed: the license (FSL-1.1-MIT) isn't a recognized OSI-approved license. See how to fix → Fail
Actively maintained (last published 30 days ago).Pass
Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail

Schema Quality & AI Usability77

AI-judged instruction clarity (excellent).Pass
Tool/resource definitions use about 714 tokens (~89/item across 8 items; 8 tools + 0 resources), lean.Pass
Usage-examples check failed: none of the tools include examples. See how to fix → Fail

Stability & Change Management23

Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial

Tool Coverage100

100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
100% of tool parameters carry a description.Pass

Capabilities100

Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass

Install

Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.

npm · @mindstone/mcp-server-microsoft-calendar

Claude Codex opencode OpenClaw Hermes Other

# add to Claude Code

claude mcp add mindstone-mcp-server-microsoft-calendar -- npx -y @mindstone/mcp-server-microsoft-calendar

# add to Codex CLI

codex mcp add mindstone-mcp-server-microsoft-calendar -- npx -y @mindstone/mcp-server-microsoft-calendar

// opencode.json

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "mindstone-mcp-server-microsoft-calendar": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@mindstone/mcp-server-microsoft-calendar"
      ],
      "enabled": true
    }
  }
}

# add to OpenClaw

openclaw mcp add mindstone-mcp-server-microsoft-calendar --command npx --arg -y --arg @mindstone/mcp-server-microsoft-calendar

# ~/.hermes/config.yaml

mcp_servers:
  mindstone-mcp-server-microsoft-calendar:
    command: "npx"
    args: ["-y", "@mindstone/mcp-server-microsoft-calendar"]

// mcp.json

{
  "mcpServers": {
    "mindstone-mcp-server-microsoft-calendar": {
      "command": "npx",
      "args": [
        "-y",
        "@mindstone/mcp-server-microsoft-calendar"
      ]
    }
  }
}

Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

3 Aug 26 +1

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.
2 Aug 26 +55
- Install scripts: unverified → pass ▲ security
- Provenance: unverified → pass ▲ security
- Known CVEs: unverified → partial ▲ security
- Malware scan: unverified → pass ▲ security
- The attested source repository moved: mindstone/mcp-servers security
- License: unverified → fail ▼ functional
- Schema quality: unverified → excellent ▲ functional
- Dependency health: unverified → partial ▲ functional
- Stability: unverified → 0.20 ▲ functional
- Maintenance: unverified → pass ▲ functional
- MCP protocol: unverified → pass ▲ functional
- Licence: FSL-1.1-MIT functional
1 Aug 26 +1
- Malware scan: pass → unverified ▼ security
- Tool coverage: unverified → 100 ▲ functional
31 Jul 26 −26
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
27 Jul 26 46

First indexed and scored.

Show 2 earlier entries Hide earlier entries

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 3 Aug 2026 · Analysed npm/@mindstone/[email protected]

Provenance verified

Ecosystem: npm · Outcome: verified

Reason: verified

Source repo:: mindstone/mcp-servers
Certificate issuer:: https://token.actions.githubusercontent.com
Certificate SAN:: https://github.com/mindstone/mcp-servers/.github/workflows/release.yml@refs/heads/main
Rekor log index:: 2062887592
Predicate type:: https://slsa.dev/provenance/v1
Subject digest:: sha512:b8a86f731dc3e4ac49b4bae4b9598a3c14b3246eda234ff84c0ba45fb44c4d62022b9d3e2777e2e9318879a39f3d2e5006b50fa1241194be707350891
Discovery method:: attestation_endpoint

Dependencies 105 packages

105 packages in the resolved dependency tree · 105 deprecated · 33 stale.

The dependency tree was only partially resolved, so these counts may be incomplete.

MCP tools — 8 exposed · ~714 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability.

Tool Tokens

create_event ~171

Create a new calendar event.

Input Output Examples

Name	Type	Req	Description
attendees	array	—	Attendee email addresses
body	string	—	Event description (HTML supported)
deviceTimezone	string	—	User's device IANA timezone from system prompt (e.g. "Europe/London"). Used to interpret start/end times if calendar settings unavailable.
end	string	—	End date/time in ISO format
isAllDay	boolean	—	All-day event (default: false)
isOnlineMeeting	boolean	—	Create Teams meeting link (default: false)
location	string	—	Event location
showAs	string	—	How this event should appear in availability (free/busy) views
start	string	—	Start date/time in ISO format
subject	string	—	Event title

No output schema declared.

No examples provided.

delete_event ~39

Delete a calendar event.

Input Output Examples

Name	Type	Req	Description
id	string	—	Event ID
notifyAttendees	boolean	—	Send cancellation to attendees (default: true)

No output schema declared.

No examples provided.

get_event ~26

Get detailed information about a specific calendar event.

Input Output Examples

Name	Type	Req	Description
id	string	—	Event ID

No output schema declared.

No examples provided.

get_free_busy ~96

Check availability/free-busy status for users.

Input Output Examples

Name	Type	Req	Description
deviceTimezone	string	—	User's device IANA timezone from system prompt (e.g. "Europe/London"). Used to interpret time range if calendar settings unavailable.
emails	array	—	Email addresses to check
endDateTime	string	—	End of time range (ISO format)
startDateTime	string	—	Start of time range (ISO format)

No output schema declared.

No examples provided.

list_calendars ~19

List all calendars the user has access to.

Input Output Examples

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

list_events ~190

List calendar events within a date range. Returns JSON by default (with timezoneInfo showing calendar, device, and resolved timezone). Set returnText=true for a human-readable agenda format. Pass deviceTimezone from the system prompt for fallback if calendar settings are unavailable.

Input Output Examples

Name	Type	Req	Description
calendarId	string	—	Calendar ID (default: primary calendar)
deviceTimezone	string	—	User's device IANA timezone from system prompt (e.g. "Europe/London"). Used as fallback if calendar settings unavailable, and for mismatch detection.
endDateTime	string	—	End date/time in ISO format (default: 7 days from now)
returnText	boolean	—	Return human-readable agenda text instead of JSON (default: false)
startDateTime	string	—	Start date/time in ISO format (default: now)
top	number	—	Max events to return (default: 50)

No output schema declared.

No examples provided.

respond_to_event ~65

Accept, decline, or tentatively accept an event invitation.

Input Output Examples

Name	Type	Req	Description
comment	string	—	Optional response message
id	string	—	Event ID
response	string	—	Your response
sendResponse	boolean	—	Send response to organizer (default: true)

No output schema declared.

No examples provided.

update_event ~108

Update an existing calendar event.

Input Output Examples

Name	Type	Req	Description
body	string	—	New description
deviceTimezone	string	—	User's device IANA timezone from system prompt (e.g. "Europe/London"). Used to interpret start/end times if calendar settings unavailable.
end	string	—	New end date/time
id	string	—	Event ID
location	string	—	New location
start	string	—	New start date/time
subject	string	—	New title

No output schema declared.

No examples provided.

On this page

Handy links

Scoring key

80+ high trust
60–79 medium
below 60 low

How we score

Score history · last 30 days

27 Jul 3 Aug