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mcp-nextcloud-calendar

by Cheffromspace
npmGitHub
TypeScript
ISC License
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MCP Nextcloud Calendar

npm version License: ISC

A Model Context Protocol (MCP) server for Nextcloud Calendar integration.

Features

  • Fetch calendars from Nextcloud

  • ADHD-friendly organization features

  • MCP protocol support (Streamable HTTP and Legacy HTTP+SSE)

Usage

Using with npx

The easiest way to use this package is with npx:

npx mcp-nextcloud-calendar

Installation

For development or local installation:

# Install globally npm install -g mcp-nextcloud-calendar # Or install locally npm install mcp-nextcloud-calendar

MCP Client Configuration

To use with an MCP client (like Claude), add this configuration to your MCP client settings:

{ "mcpServers": { "nextcloud-calendar": { "command": "npx", "args": ["-y", "mcp-nextcloud-calendar"], "env": { "NEXTCLOUD_BASE_URL": "https://your-nextcloud-server.com", "NEXTCLOUD_USERNAME": "your-username", "NEXTCLOUD_APP_TOKEN": "your-app-token" } } } }

Specifying a Version

You can pin to a specific version of the package:

{ "mcpServers": { "nextcloud-calendar": { "command": "npx", "args": ["-y", "mcp-nextcloud-calendar@0.1.0"], "env": { "NEXTCLOUD_BASE_URL": "https://your-nextcloud-server.com", "NEXTCLOUD_USERNAME": "your-username", "NEXTCLOUD_APP_TOKEN": "your-app-token" } } } }

Configuration

Environment Variables

The server uses these environment variables, with defaults where possible:

Variable

Description

Default

Required

PORT

Server port

3001

No

SERVER_NAME

MCP server identifier

nextcloud-calendar-server

No

NODE_ENV

Environment (development/production)

development

No

NEXTCLOUD_BASE_URL

Your Nextcloud server URL

-

Yes

NEXTCLOUD_USERNAME

Your Nextcloud username

-

Yes

NEXTCLOUD_APP_TOKEN

Your Nextcloud app token

-

Yes

KEEP_ALIVE_INTERVAL

Keep-alive interval (ms)

30000

No

Development Setup

For local development:

  1. Clone the repository

  2. Install dependencies:

npm install

  1. Create a .env file in the project root:

cp .env.example .env

  1. Edit the .env file with your Nextcloud credentials.

Getting a Nextcloud App Token

  1. Log in to your Nextcloud instance

  2. Go to Settings → Security → App Passwords

  3. Create a new app password with a name like "MCP Calendar"

  4. Copy the generated token to your .env file

Development

# Build the project npm run build # Run in development mode npm run dev # Run tests npm run test # Run linting npm run lint # Format code npm run format

API Endpoints

  • /mcp - Primary MCP endpoint (Streamable HTTP transport)

  • /sse and /messages - Legacy MCP endpoints (HTTP+SSE transport)

  • GET /health - Health check endpoint

  • GET /api/calendars - List all calendars

MCP Tools

The following MCP tools are registered and available to clients:

Calendar Management

Tool

Description

Parameters

listCalendars

Retrieves all accessible calendars

None

createCalendar

Creates a new calendar

displayName

(required),

color

(optional),

category

(optional),

focusPriority

(optional)

updateCalendar

Updates an existing calendar

id

(required),

displayName

(optional),

color

(optional),

category

(optional),

focusPriority

(optional)

deleteCalendar

Deletes a calendar

id

(required)

⚠️ Permission Warning: The updateCalendar and deleteCalendar tools may require special permissions in your Nextcloud instance. Calendar operations are subject to Nextcloud's permission system.

Event Management

Tool

Description

Parameters

listEvents

Retrieves events for a calendar

calendarId

(required),

start

(optional),

end

(optional)

getEvent

Gets a specific event

calendarId

(required),

eventId

(required)

createEvent

Creates a new event

calendarId

(required),

summary

(required),

start

(required),

end

(required),

description

(optional),

location

(optional)

updateEvent

Updates an existing event

calendarId

(required),

eventId

(required), [plus any event properties to update]

deleteEvent

Deletes an event

calendarId

(required),

eventId

(required)

Known Issues and Limitations

Note: This package is currently in early development (0.1.x). APIs and tools may change without notice in future releases.

  • The update and delete calendar operations may require specific permissions in your Nextcloud instance

  • Error handling for specific Nextcloud error codes is still being improved

  • Large calendars with many events may experience performance issues

Please report any issues on the GitHub repository.

License

ISC

ko-fi

This server cannot be installed

-
security - not tested
A
license - permissive license
-
quality - not tested

How are these scores calculated?

remote-capable server

The server can be hosted and run remotely because it primarily relies on remote services or has no dependency on the local environment.

mcp-nextcloud-calendar

  1. Features
    1. Usage
      1. Using with npx
      2. Installation
      3. MCP Client Configuration
    2. Configuration
      1. Environment Variables
      2. Development Setup
      3. Getting a Nextcloud App Token
    3. Development
      1. API Endpoints
        1. MCP Tools
          1. Calendar Management
          2. Event Management
        2. Known Issues and Limitations
          1. License

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