Home › Communication › CalDAV calendars

CalDAV calendars

Read and write CalDAV calendars: events, tasks and journal entries over the open standard

TypeScript CloudLocal

★ 0 stars Last pushed 2026-09-20 License: MIT

View repository → Website →

Connect

Review any command before running it. Package names and URLs come from the server's own registry entry.

Package (npm 0.1.4)

npx -y @ni-c/[email protected]

Or add to your MCP client config:

{
  "mcpServers": {
    "caldav-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@ni-c/[email protected]"
      ],
      "env": {
        "CALDAV_URL": "<YOUR_VALUE>",
        "CALDAV_USERNAME": "<YOUR_VALUE>",
        "CALDAV_PASSWORD": "<YOUR_VALUE>",
        "CALDAV_TOKEN": "<YOUR_VALUE>",
        "CALDAV_CALENDARS": "<YOUR_VALUE>",
        "CALDAV_TIMEZONE": "<YOUR_VALUE>",
        "CALDAV_USER_EMAIL": "<YOUR_VALUE>",
        "CALDAV_MAX_EVENTS": "<YOUR_VALUE>",
        "CALDAV_READ_ONLY": "<YOUR_VALUE>",
        "CALDAV_INSECURE_TLS": "<YOUR_VALUE>",
        "CALDAV_ALLOW_PLAINTEXT": "<YOUR_VALUE>",
        "CALDAV_ALLOW_TOOLS": "<YOUR_VALUE>",
        "CALDAV_DENY_TOOLS": "<YOUR_VALUE>",
        "ELICITATION": "<YOUR_VALUE>"
      }
    }
  }
}

CALDAV_URL required — Root of the CalDAV server, e.g. https://dav.example.net. A calendar collection URL also works.
CALDAV_USERNAME — Account name. Most hosted services want an app-specific password with it.
CALDAV_PASSWORD secret — Password or app-specific password. Deleted from the environment once read.
CALDAV_TOKEN secret — Bearer token, as an alternative to username and password. Not both.
CALDAV_CALENDARS — Comma-separated calendars this server may touch, by path or final path segment. Default: all of them.
CALDAV_TIMEZONE — IANA zone for timestamps that carry no offset, e.g. Europe/Berlin (default: UTC)
CALDAV_USER_EMAIL — The address you are invited as, so respond_to_event can find your own attendee line
CALDAV_MAX_EVENTS — Entries a listing returns by default, 1 to 500 (default: 100)
CALDAV_READ_ONLY — Set to true to register only the read tools (default: false)
CALDAV_INSECURE_TLS — Set to true to accept a self-signed certificate on the configured host only (default: false)
CALDAV_ALLOW_PLAINTEXT — Set to true to allow a plain http:// URL to a host that is not loopback, which sends the credentials unencrypted (default: false)
CALDAV_ALLOW_TOOLS — Comma-separated tool names or list_* prefixes to register; 'essential' selects a curated preset (default: all tools)
CALDAV_DENY_TOOLS — Comma-separated tool names or list_* prefixes to remove from whatever the allow list left
ELICITATION — Deliberately unprefixed, and reaches every MCP server in the environment. Set to false to make guarded tools use the two-call token instead of a dialog (default: true)

Package (oci)

docker run -i --rm ghcr.io/ni-c/caldav-mcp:0.1.4

Or add to your MCP client config:

{
  "mcpServers": {
    "caldav-mcp": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/ni-c/caldav-mcp:0.1.4"
      ],
      "env": {
        "CALDAV_URL": "<YOUR_VALUE>",
        "CALDAV_USERNAME": "<YOUR_VALUE>",
        "CALDAV_PASSWORD": "<YOUR_VALUE>",
        "CALDAV_TOKEN": "<YOUR_VALUE>",
        "CALDAV_CALENDARS": "<YOUR_VALUE>",
        "CALDAV_TIMEZONE": "<YOUR_VALUE>",
        "CALDAV_USER_EMAIL": "<YOUR_VALUE>",
        "CALDAV_MAX_EVENTS": "<YOUR_VALUE>",
        "CALDAV_READ_ONLY": "<YOUR_VALUE>",
        "CALDAV_INSECURE_TLS": "<YOUR_VALUE>",
        "CALDAV_ALLOW_PLAINTEXT": "<YOUR_VALUE>",
        "CALDAV_ALLOW_TOOLS": "<YOUR_VALUE>",
        "CALDAV_DENY_TOOLS": "<YOUR_VALUE>",
        "ELICITATION": "<YOUR_VALUE>"
      }
    }
  }
}

CALDAV_URL required — Root of the CalDAV server, e.g. https://dav.example.net. A calendar collection URL also works.
CALDAV_USERNAME — Account name. Most hosted services want an app-specific password with it.
CALDAV_PASSWORD secret — Password or app-specific password. Deleted from the environment once read.
CALDAV_TOKEN secret — Bearer token, as an alternative to username and password. Not both.
CALDAV_CALENDARS — Comma-separated calendars this server may touch, by path or final path segment. Default: all of them.
CALDAV_TIMEZONE — IANA zone for timestamps that carry no offset, e.g. Europe/Berlin (default: UTC)
CALDAV_USER_EMAIL — The address you are invited as, so respond_to_event can find your own attendee line
CALDAV_MAX_EVENTS — Entries a listing returns by default, 1 to 500 (default: 100)
CALDAV_READ_ONLY — Set to true to register only the read tools (default: false)
CALDAV_INSECURE_TLS — Set to true to accept a self-signed certificate on the configured host only (default: false)
CALDAV_ALLOW_PLAINTEXT — Set to true to allow a plain http:// URL to a host that is not loopback, which sends the credentials unencrypted (default: false)
CALDAV_ALLOW_TOOLS — Comma-separated tool names or list_* prefixes to register; 'essential' selects a curated preset (default: all tools)
CALDAV_DENY_TOOLS — Comma-separated tool names or list_* prefixes to remove from whatever the allow list left
ELICITATION — Deliberately unprefixed, and reaches every MCP server in the environment. Set to false to make guarded tools use the two-call token instead of a dialog (default: true)

Related servers

inbox-zero

Communication

Official

An MCP server for Inbox Zero. Adds functionality on top of Gmail like finding out which emails you need to reply to or need to follow up on.

★ 12,328 MCP Server

whatsapp-mcp

Communication

An MCP server for searching your personal WhatsApp messages, contacts and sending messages to individuals or groups

★ 6,310 MCP Server

slack-mcp-server

Communication

The most powerful MCP server for Slack Workspaces.

★ 1,847 MCP Server

telegram-mcp

Communication

Telegram API integration for accessing user data, managing dialogs (chats, channels, groups), retrieving messages, sending messages and…

★ 1,689 MCP Server

emailmd

Communication

Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails.

★ 1,377 MCP Server Reachable

Microsoft 365 MCP Server

Communication

Interact with Microsoft 365 and Office services through the Microsoft Graph API.

★ 993 MCP Server

Listed in punkpeye/awesome-mcp-servers (MIT)

Data from the Official MCP Registry