Is io.github.p-l-ta/calendar-mcp safe to use?

io.github.p-l-ta/calendar-mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.

How do I install io.github.p-l-ta/calendar-mcp?

io.github.p-l-ta/calendar-mcp supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What can io.github.p-l-ta/calendar-mcp do?

io.github.p-l-ta/calendar-mcp provides 7 tools: list_calendars, list_events, get_event, search_events, create_event and 2 more. See the full tools list on the server page for descriptions and parameters.

What AI clients work with io.github.p-l-ta/calendar-mcp?

io.github.p-l-ta/calendar-mcp is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse transport.

Is io.github.p-l-ta/calendar-mcp actively maintained?

io.github.p-l-ta/calendar-mcp is recently maintained — last commit was 54 days ago.

io.github.p-l-ta/calendar-mcp

@p-l-ta/calendar-mcp

List, search, and manage calendar events via macOS Calendar.app across all configured accounts.

36/wk 7 tools GitHub npm

No known CVEs

No license

Maintained

Last commit 54d ago

Works with most clients

Transport: stdio, sse

7 tools · ~306 tok

Grade A · 0.2% of 200K ctx

Edit this pageView history

Productivity

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "calendar-app": {
      "args": [
        "@p-l-ta/calendar-mcp"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-p-l-ta-calendar-mcp)](https://mcppedia.org/s/io-github-p-l-ta-calendar-mcp)

Read me

What io.github.p-l-ta/calendar-mcp does

MCP server that gives Claude (and other MCP hosts) full access to Calendar.app on macOS — list, search, create, update, and delete events — across every account configured in Calendar.app (iCloud, Google, Exchange, etc.).

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y '@p-l-ta/calendar-mcp' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

82/100across 5 weighted dimensions

How we score →

0255075100

−18

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked @p-l-ta/calendar-mcp against OSV.dev.

Inventory

Tools (7)

Click any tool to inspect its schema.

~306 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.github.p-l-ta/calendar-mcp safe to use?: io.github.p-l-ta/calendar-mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install io.github.p-l-ta/calendar-mcp?: io.github.p-l-ta/calendar-mcp supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can io.github.p-l-ta/calendar-mcp do?: io.github.p-l-ta/calendar-mcp provides 7 tools: list_calendars, list_events, get_event, search_events, create_event and 2 more. See the full tools list on the server page for descriptions and parameters.
What AI clients work with io.github.p-l-ta/calendar-mcp?: io.github.p-l-ta/calendar-mcp is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse transport.
Is io.github.p-l-ta/calendar-mcp actively maintained?: io.github.p-l-ta/calendar-mcp is recently maintained — last commit was 54 days ago.

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Community

Discussion

Start a conversation

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Has anyone used this with Cursor?How do you handle auth?Any alternatives?

Edit this pageView history

Productivity

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "calendar-app": {
      "args": [
        "@p-l-ta/calendar-mcp"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-p-l-ta-calendar-mcp)](https://mcppedia.org/s/io-github-p-l-ta-calendar-mcp)

Read me

What io.github.p-l-ta/calendar-mcp does

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y '@p-l-ta/calendar-mcp' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

README

calendar-mcp

MCP server that gives Claude (and other MCP hosts) full access to Calendar.app on macOS — list, search, create, update, and delete events — across every account configured in Calendar.app (iCloud, Google, Exchange, etc.).

Prerequisites

macOS (Calendar.app required)
Node.js 20+
An MCP host: Claude Desktop or any stdio MCP client

Installation

Claude Desktop — one-click install (recommended)

Download calendar-mcp.mcpb from the latest release
Double-click the .mcpb file — Claude Desktop installs it automatically
Grant the required macOS permissions (see below)

Manual / other hosts

npx @p-l-ta/calendar-mcp

Or install globally:

npm install -g @p-l-ta/calendar-mcp
calendar-mcp

Point your MCP host at the calendar-mcp binary (stdio transport). Example config:

{
  "mcpServers": {
    "calendar-app": {
      "command": "npx",
      "args": ["@p-l-ta/calendar-mcp"]
    }
  }
}

Required macOS permissions

Grant these to the application that runs the MCP host (Claude Desktop, etc.):

Permission	Where to grant
Full Disk Access	System Settings → Privacy & Security → Full Disk Access
Automation → Calendar	System Settings → Privacy & Security → Automation

The MCP server process inherits permissions from the host application that launches it.

Tools

Tool	Description
`list_calendars`	List all calendars with name, color, account, and UUID
`list_events`	List events in a date range, including recurring-event occurrences
`get_event`	Get full details of a single event by UUID, including attendees
`search_events`	Search events by text across title, description, and location
`create_event`	Create a new calendar event
`update_event`	Update properties of an existing event
`delete_event`	Permanently delete an event

How it works

Reads (list_calendars, list_events, search_events, get_event) — query Calendar's SQLite database directly for fast, structured results across all accounts. Recurring events are expanded correctly via Calendar's OccurrenceCache table.
Writes (create_event, update_event, delete_event) — driven by AppleScript automation against Calendar.app, so changes sync to all connected accounts (iCloud, Google, Exchange) just as if you'd made them in the app.

Development

npm install
npm run dev          # tsx watch — live reload
npm run build        # compile TypeScript → dist/
npm run mcpb         # build Claude Desktop extension → build/calendar-mcp.mcpb
npm run smoke        # smoke-test all 7 tools against live Calendar.app data

Note: npm run smoke requires Terminal.app (or your terminal emulator) to have Full Disk Access, since it reads Calendar.sqlitedb directly.

Interactive MCP testing:

npm run build
npx @modelcontextprotocol/inspector node dist/server.js

Privacy Policy

calendar-mcp is a local MCP server that runs entirely on your Mac. It has no backend, no telemetry, and makes no network requests of its own.

What it accesses:

Calendar's SQLite database (~/Library/Group Containers/group.com.apple.calendar/Calendar.sqlitedb) — read-only, used for list/search queries
Calendar.app via AppleScript — to create, update, and delete events

What it does NOT do:

Collect, store, or transmit any data outside your Mac
Connect to any external server or API
Log calendar data anywhere

All calendar data stays on your device and is only passed to the MCP host (Claude Desktop or another client) as part of normal tool responses. You control exactly which tools Claude can invoke.

License

MIT

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

82/100across 5 weighted dimensions

How we score →

0255075100

−18

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked @p-l-ta/calendar-mcp against OSV.dev.

Inventory

Tools (7)

Click any tool to inspect its schema.

~306 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.github.p-l-ta/calendar-mcp safe to use?: io.github.p-l-ta/calendar-mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install io.github.p-l-ta/calendar-mcp?: io.github.p-l-ta/calendar-mcp supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can io.github.p-l-ta/calendar-mcp do?: io.github.p-l-ta/calendar-mcp provides 7 tools: list_calendars, list_events, get_event, search_events, create_event and 2 more. See the full tools list on the server page for descriptions and parameters.
What AI clients work with io.github.p-l-ta/calendar-mcp?: io.github.p-l-ta/calendar-mcp is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse transport.
Is io.github.p-l-ta/calendar-mcp actively maintained?: io.github.p-l-ta/calendar-mcp is recently maintained — last commit was 54 days ago.