Dev Tools & GitMCP Registrypypi6 toolsB · 73

iCloud Calendar (CalDAV) MCP server

Name: iCloud Calendar (CalDAV)
Author: Glob0x17

io.github.Glob0x17 · Updated 17d ago

iCloud Calendar over CalDAV: list, create, update, move and delete events. Optional read-only mode.

At a glance

iCloud Calendar (CalDAV) is an MCP server in the Dev Tools & Git category. It runs locally over stdio via `uvx mcp-icloud-caldav`, and needs ICLOUD_USERNAME and ICLOUD_PASSWORD. It exposes 6 tools, including list_calendars, list_events and create_event. It scores B (73/100) on the MCP Skills Hub health score as of Oct 28, 2026.

Source 0

One-click install

VS Code VS Code Insiders Cursor

Opens your editor and pre-fills the config. Your editor will ask before adding it.

How to install iCloud Calendar (CalDAV) in your AI client

Setup for Claude Code, Claude Desktop, Cursor, Codex, Windsurf, Cline and VS Code — copy-paste ready.

How to install iCloud Calendar (CalDAV) in Claude CodeAnthropic's agentic CLI

Add the server

bash

claude mcp add mcp-icloud-caldav -e 'ICLOUD_USERNAME=<ICLOUD_USERNAME>' -e 'ICLOUD_PASSWORD=<ICLOUD_PASSWORD>' -- uvx mcp-icloud-caldav

Fill in your credentials
Replace <ICLOUD_USERNAME>, <ICLOUD_PASSWORD> with your real values. Keep secrets out of any config file you commit.
3
Verify it's connected
bash
```
claude mcp list
```
Sharing it with your team?
Add `--scope project` to write it to .mcp.json in the repository root, which you can commit (with the secrets left as environment variables).
Use it in a session
Ask Claude to use the tools this server exposes (e.g. list_calendars, list_events, create_event). It discovers them automatically.

How to install iCloud Calendar (CalDAV) in Claude DesktopDesktop app (MCP config)

Open your MCP config
macOS: ~/Library/Application Support/Claude/claude_desktop_config.json · Windows: %APPDATA%\Claude\claude_desktop_config.json

Add this server

json

{
  "mcpServers": {
    "mcp-icloud-caldav": {
      "command": "uvx",
      "args": [
        "mcp-icloud-caldav"
      ],
      "env": {
        "ICLOUD_USERNAME": "<ICLOUD_USERNAME>",
        "ICLOUD_PASSWORD": "<ICLOUD_PASSWORD>"
      }
    }
  }
}

Fill in your credentials
Replace <ICLOUD_USERNAME>, <ICLOUD_PASSWORD> with your real values. Keep secrets out of any config file you commit.
Restart Claude Desktop
The tools appear under the 🔌 menu once the app reloads.

How to install iCloud Calendar (CalDAV) in CursorAI-first code editor

Create / edit .cursor/mcp.json in your project

json

{
  "mcpServers": {
    "mcp-icloud-caldav": {
      "command": "uvx",
      "args": [
        "mcp-icloud-caldav"
      ],
      "env": {
        "ICLOUD_USERNAME": "<ICLOUD_USERNAME>",
        "ICLOUD_PASSWORD": "<ICLOUD_PASSWORD>"
      }
    }
  }
}

Fill in your credentials
Replace <ICLOUD_USERNAME>, <ICLOUD_PASSWORD> with your real values. Keep secrets out of any config file you commit.
Enable it
Cursor Settings → MCP → toggle the server on. Tools become available to the Composer/Agent.

How to install iCloud Calendar (CalDAV) in Codex CLIOpenAI coding agent

Add to ~/.codex/config.toml

toml

[mcp_servers.mcp-icloud-caldav]
command = "uvx"
args = ["mcp-icloud-caldav"]
env = { ICLOUD_USERNAME = "<ICLOUD_USERNAME>", ICLOUD_PASSWORD = "<ICLOUD_PASSWORD>" }

Fill in your credentials
Replace <ICLOUD_USERNAME>, <ICLOUD_PASSWORD> with your real values. Keep secrets out of any config file you commit.
Run Codex
Codex loads MCP servers from config.toml on startup and exposes their tools to the agent.

How to install iCloud Calendar (CalDAV) in WindsurfCodeium's agentic IDE

Edit ~/.codeium/windsurf/mcp_config.json

json

{
  "mcpServers": {
    "mcp-icloud-caldav": {
      "command": "uvx",
      "args": [
        "mcp-icloud-caldav"
      ],
      "env": {
        "ICLOUD_USERNAME": "<ICLOUD_USERNAME>",
        "ICLOUD_PASSWORD": "<ICLOUD_PASSWORD>"
      }
    }
  }
}

Fill in your credentials
Replace <ICLOUD_USERNAME>, <ICLOUD_PASSWORD> with your real values. Keep secrets out of any config file you commit.
Reload
Windsurf → Cascade → refresh MCP servers. Cascade can now call the tools.

How to install iCloud Calendar (CalDAV) in ClineVS Code autonomous agent

Open Cline → MCP Servers → Configure
Adds to cline_mcp_settings.json.

Add the server

json

{
  "mcpServers": {
    "mcp-icloud-caldav": {
      "command": "uvx",
      "args": [
        "mcp-icloud-caldav"
      ],
      "env": {
        "ICLOUD_USERNAME": "<ICLOUD_USERNAME>",
        "ICLOUD_PASSWORD": "<ICLOUD_PASSWORD>"
      }
    }
  }
}

Fill in your credentials
Replace <ICLOUD_USERNAME>, <ICLOUD_PASSWORD> with your real values. Keep secrets out of any config file you commit.

How to install iCloud Calendar (CalDAV) in VS CodeCopilot / MCP support

Create .vscode/mcp.json

json

{
  "servers": {
    "mcp-icloud-caldav": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "mcp-icloud-caldav"
      ],
      "env": {
        "ICLOUD_USERNAME": "<ICLOUD_USERNAME>",
        "ICLOUD_PASSWORD": "<ICLOUD_PASSWORD>"
      }
    }
  }
}

Fill in your credentials
Replace <ICLOUD_USERNAME>, <ICLOUD_PASSWORD> with your real values. Keep secrets out of any config file you commit.
Start it
VS Code shows a ▶ Start action above the server entry. Agent mode (Copilot Chat) can then use the tools.

What does iCloud Calendar (CalDAV) need from you?

API key — App-specific password from appleid.apple.com (not the Apple ID password)

ICLOUD_USERNAMErequiredEnvironment variable
Apple ID email address
ICLOUD_PASSWORDrequiredsecretEnvironment variable
App-specific password from appleid.apple.com (not the Apple ID password)
MCP_ICAL_READ_ONLYoptionalEnvironment variable
Set to true to leave out the create, update and delete tools
MCP_ICAL_LOG_LEVELoptionalEnvironment variable
Log level on stderr: TRACE, DEBUG, INFO, WARNING or ERROR

Pass secrets through your shell environment rather than committing them into a config file.

What tools does iCloud Calendar (CalDAV) expose? (6)

Taken from the project's README — the server itself was not queried, so check its docs for the exact schemas.

list_calendarsNames of the available calendars
list_eventsEvents in a date range, optionally for one calendar, sorted by start time
create_eventNew event: title, times, all-day, location, notes, URL, alarms, recurrence
update_eventChange any of those fields, or move the event to another calendar
delete_eventDelete an event by identifier
debug_calendar_connectionConnection check: calendars and event counts over the last 7 days

What the code can do

Source analysis currently covers npm packages only. This server ships as a Python package, which needs a different parser.

Before you install

Signals gathered from the source repo and package registry — not a safety verdict.

What it can reach

Runs code on your machine — Executes as a local process with your user's permissions, including filesystem access.
Downloads at launch — The package is fetched from its registry each run unless you pin a version.

Last commit 17 days ago — Actively maintained.
Repository created 17 days ago — Very new project with little track record yet.
Fork of another repository — Check whether the upstream project is the one you actually want.
0 GitHub stars — Very little community usage so far.

Client compatibility

Claude Code: NativeClaude Desktop: NativeCursor: NativeCodex CLI: NativeWindsurf: NativeCline: NativeVS Code: Native

Health score

B · 73

Maintenance, adoption, transparency and packaging — not a safety audit. How this is calculated

Maintenance30%100%
Last commit 17 days ago.
Adoption20%0%
0 stars.
Transparency20%100%
4/4: ✓ public source repo, ✓ declared license, ✓ documentation, ✓ discoverable tool list.
Provenance15%50%
Repository is a fork.
Packaging15%100%
Publishes a pinned version (0.2.1).

Documentation

Full README

iCloud Calendar MCP Server

A Model Context Protocol server that gives MCP clients access to iCloud Calendar over CalDAV: list calendars, read, create, update, move and delete events. It works on Linux, macOS and Windows, since it talks to iCloud directly instead of going through the macOS Calendar app.

This is a maintained fork of zwrong/iCalendar, itself derived from the macOS mcp-ical server. See Changes in this fork.

Tools

| Tool | Description | |---|---| | list_calendars | Names of the available calendars | | list_events | Events in a date range, optionally for one calendar, sorted by start time | | create_event | New event: title, times, all-day, location, notes, URL, alarms, recurrence | | update_event | Change any of those fields, or move the event to another calendar | | delete_event | Delete an event by identifier | | debug_calendar_connection | Connection check: calendars and event counts over the last 7 days |

The calendars://list resource also lists the calendars. With MCP_ICAL_READ_ONLY=true, the three write tools are not registered at all.

Requirements

Python 3.12 or later and uv
An Apple ID with iCloud Calendar enabled
An app-specific password for that Apple ID

App-specific password

App-Specific Passwords.

Generate a password, for example named mcp-icloud-caldav.

The username is your Apple ID address, which is not necessarily an @icloud.com address. An app-specific password gives access to iCloud CalDAV, CardDAV and IMAP: keep it out of version control and revoke it if it leaks.

Installation

Excerpt — the full document is on GitHub.

Alternatives to iCloud Calendar (CalDAV)

Maintain iCloud Calendar (CalDAV)? Add a badge to your README

Shows its health grade, and links readers to install steps for every client.

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