Ext Ops Panel
Open dashboard

CalDAV calendars

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

MCP server · by ni-c

About

CalDAV calendars is an MCP server published by ni-c. Marketplaces we read that list it: 1 (Official MCP Registry). We first saw it on 2026-10-11 and have recorded no change since. As of our marketplace pass on 2026-10-13.

What it asks for

  • Runs on your machine
  • Secrets: 2
  • Settings: 14

Requires: CALDAV_PASSWORD (secret), CALDAV_TOKEN (secret), CALDAV_URL

What it declares, asks for and runs, in full

Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.

Package

npm @ni-c/caldav-mcp (@ni-c/caldav-mcp on npm)

  • npm downloads/week: 75 (2026-10-12)
  • npm downloads/month: 458 (2026-10-12)
  • Latest version on npm: 0.1.4, published 2026-09-08
  • Declared version 0.1.4 is not listed on npm

npm facts come from the public npm registry (registry.npmjs.org, api.npmjs.org). Each figure is the registry's own and is never added to another. A registry that publishes no figure shows none: no number is not zero.

Works with

  • Claude Code
  • Codex
  • Cursor
  • VS Code
  • Copilot CLI

From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.

Connect

Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.

As a local MCP server: npm package

Built from what Official MCP Registry declares.

Claude CodeTerminal
claude mcp add --env "CALDAV_PASSWORD=<YOUR_CALDAV_PASSWORD>" --env "CALDAV_TOKEN=<YOUR_CALDAV_TOKEN>" --env "CALDAV_URL=<YOUR_CALDAV_URL>" --transport stdio caldav-mcp -- npx -y @ni-c/caldav-mcp
Codex~/.codex/config.toml
[mcp_servers.caldav-mcp]
command = "npx"
args = ["-y", "@ni-c/caldav-mcp"]

[mcp_servers.caldav-mcp.env]
CALDAV_PASSWORD = "<YOUR_CALDAV_PASSWORD>"
CALDAV_TOKEN = "<YOUR_CALDAV_TOKEN>"
CALDAV_URL = "<YOUR_CALDAV_URL>"
Cursor~/.cursor/mcp.json
{
  "mcpServers": {
    "caldav-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@ni-c/caldav-mcp"
      ],
      "env": {
        "CALDAV_PASSWORD": "<YOUR_CALDAV_PASSWORD>",
        "CALDAV_TOKEN": "<YOUR_CALDAV_TOKEN>",
        "CALDAV_URL": "<YOUR_CALDAV_URL>"
      }
    }
  }
}

Replace the values in angle brackets with your own. We show the names of the settings, never values.

Optional settings it also lists: CALDAV_ALLOW_PLAINTEXT, CALDAV_ALLOW_TOOLS, CALDAV_CALENDARS, CALDAV_DENY_TOOLS, CALDAV_INSECURE_TLS, CALDAV_MAX_EVENTS, CALDAV_READ_ONLY, CALDAV_TIMEZONE, CALDAV_USERNAME, CALDAV_USER_EMAIL, ELICITATION.

Where it is published

MarketplaceStatusVersionFiguresVerifiedFirst seen
Official MCP Registry (Open the registry record) Listed 0.1.4 Downloads/month (npm): 458
Downloads/week (npm): 75
Forks (GitHub): 0
Stars (GitHub): 0
Not marked

Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.

What changed

Nothing has moved on this plugin since we started watching it.

Similar plugins

Products whose own names, descriptions, tools and skills are closest in meaning to this one, on every marketplace we read. Closeness is ranked within this list only.

  • iCloud Calendar (CalDAV)

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

    by Glob0x17 · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • AddCal

    Publish public calendars and events others subscribe to: RSVPs, feeds and add-to-calendar links.

    by addcal.co · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • dav-mcp io.github.PhilflowIO/dav-mcp

    AI-orchestrated calendars, contacts & tasks across any DAV platform. 27 tools, field-agnostic.

    by PhilflowIO · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • Google Calendar MCP

    MCP server for the Google Calendar API: events, recurrence, invitations, availability, calendars.

    by A1-x-Tech · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • Calensync

    Manage Google, Outlook & Apple calendars and create private sync rules from chat.

    by calensync.live · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • Mac Calendar MCP

    Read-only Mac Calendar MCP server with indexed archive search.

    by wagamama · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • Calendar.app

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

    by p-l-ta · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • nextcloud-organizer-mcp io.github.Vando-sketch/nextcloud-organizer-mcp

    Manage Nextcloud tasks, calendar events and notes from Claude over CalDAV and the Notes API.

    by Vando-sketch · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • Apple Calendar

    List, create, update, and delete events in Apple Calendar on macOS.

    by JonathanRReed · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • Kalender Sync

    GDPR-compliant calendar access for AI assistants: read, create, edit, RSVP. Google, MS 365, Apple.

    by kalender-sync.de · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

Similar plugins by marketplace

The same question asked of one marketplace at a time: is there an analog of this plugin there?

Has a listing on Claude Code: claude-plugins-community (5)
  • gws-connector io.github.orieg/gws-connector

    Multi-account Google Workspace MCP — Gmail, Calendar, Drive, Sheets, Docs with smart routing.

    by orieg · MCP server

    Listed on: Official MCP Registry, Claude Code: claude-plugins-community · Describes nearly the same job

  • Multi-account MCP for Gmail, Calendar, Drive, Docs, and Sheets — 61 tools, token

    Multi-account MCP for Gmail, Calendar, Drive, Docs, and Sheets — 61 tools, token-efficient, macOS…

    by adelaidasofia · MCP server

    Listed on: Official MCP Registry, Claude Code: claude-plugins-community, Community GitHub marketplaces · Describes nearly the same job

  • circleback

    Circleback conversational context integration. Search and access meetings, emails, calendar events, and more.

    by circlebackai · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude Code: claude-plugins-community · Describes nearly the same job

  • google-multi-account

    Connect multiple Google accounts (Gmail + Calendar) to Claude via MCP. Search emails, read threads, create drafts, send messages, list calendar events, create events, and find…

    by stevegustafson32 · Plugin bundle

    Listed on: Claude Code: claude-plugins-community · Describes nearly the same job

  • lu

    lu.ma events MCP server with draft+confirm safety, audit logging, and prompt-injection scrubbing.…

    by adelaidasofia · MCP server

    Listed on: Official MCP Registry, Claude Code: claude-plugins-community, Community GitHub marketplaces · Describes nearly the same job

Has a listing on Claude Code: claude-plugins-official (5)
  • circleback

    Circleback conversational context integration. Search and access meetings, emails, calendar events, and more.

    by circlebackai · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude Code: claude-plugins-community · Describes nearly the same job

  • Atlassian MCP

    Connect to Atlassian products including Jira and Confluence. Search and create issues, access documentation, manage sprints, and integrate your development workflow with…

    by atlassian · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Official MCP Registry, Claude Code: claude-plugins-community, Community GitHub marketplaces · Describes nearly the same job

  • sanity

    Sanity content platform integration with MCP server, agent skills, and slash commands. Query and author content, build and optimize GROQ queries, design schemas, and set up Visual…

    by sanity-io · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Official MCP Registry, Claude: knowledge-work-plugins, Claude Code: claude-plugins-community · Describes nearly the same job

  • Desktop Commander

    MCP server for terminal commands, file operations, and process management

    by wonderwhy-er · MCP server

    Listed on: Official MCP Registry, Claude Code: claude-plugins-official, Docker MCP Catalog, Claude: knowledge-work-plugins, Claude Code: claude-plugins-community, Community GitHub marketplaces · Describes nearly the same job

  • servicenow-sdk

    Create, edit, and deploy ServiceNow applications with the Fluent SDK effortlessly through Claude AI.

    by ServiceNow · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude: knowledge-work-plugins · Describes nearly the same job

Has a listing on Claude: knowledge-work-plugins (5)
  • sanity

    Sanity content platform integration with MCP server, agent skills, and slash commands. Query and author content, build and optimize GROQ queries, design schemas, and set up Visual…

    by sanity-io · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Official MCP Registry, Claude: knowledge-work-plugins, Claude Code: claude-plugins-community · Describes nearly the same job

  • Desktop Commander

    MCP server for terminal commands, file operations, and process management

    by wonderwhy-er · MCP server

    Listed on: Official MCP Registry, Claude Code: claude-plugins-official, Docker MCP Catalog, Claude: knowledge-work-plugins, Claude Code: claude-plugins-community, Community GitHub marketplaces · Describes nearly the same job

  • servicenow-sdk

    Create, edit, and deploy ServiceNow applications with the Fluent SDK effortlessly through Claude AI.

    by ServiceNow · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude: knowledge-work-plugins · Describes nearly the same job

  • box

    Work with your Box content directly from Claude Code — search files, organize folders, collaborate with your team, and use Box AI to answer questions, summarize documents, and…

    by box · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude: knowledge-work-plugins, Community GitHub marketplaces · Describes nearly the same job

  • incident.io

    Work with incident.io from Claude: respond to and investigate incidents, check on-call schedules and escalations, and author the runbooks, skills and architecture docs that…

    by incident-io · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude: knowledge-work-plugins, Community GitHub marketplaces · Describes nearly the same job

Has a listing on Codex: openai-curated (openai/plugins) (5)
  • Outlook Calendar

    Connect Microsoft Outlook Calendar for scheduling, daily briefs, event prep, and safe meeting changes.

    by OpenAI · Plugin bundle

    Listed on: Codex: openai-curated (openai/plugins) · Describes nearly the same job

  • Google Calendar

    Connect Google Calendar for scheduling, availability, daily briefs, and event management.

    by OpenAI · Plugin bundle

    Listed on: Codex: openai-curated (openai/plugins) · Describes nearly the same job

  • SharePoint

    Work with SharePoint using the configured Microsoft SharePoint app connector.

    by OpenAI · Plugin bundle

    Listed on: Codex: openai-curated (openai/plugins) · Describes nearly the same job

  • Outlook Email

    Work with Outlook Email using the configured Microsoft Outlook app connector.

    by OpenAI · Plugin bundle

    Listed on: Codex: openai-curated (openai/plugins) · Describes nearly the same job

  • Gmail

    Work with Gmail using the configured Gmail app connector.

    by OpenAI · Plugin bundle

    Listed on: Codex: openai-curated (openai/plugins) · Describes nearly the same job

Has a listing on Community GitHub marketplaces (5)
  • Multi-account MCP for Gmail, Calendar, Drive, Docs, and Sheets — 61 tools, token

    Multi-account MCP for Gmail, Calendar, Drive, Docs, and Sheets — 61 tools, token-efficient, macOS…

    by adelaidasofia · MCP server

    Listed on: Official MCP Registry, Claude Code: claude-plugins-community, Community GitHub marketplaces · Describes nearly the same job

  • lu

    lu.ma events MCP server with draft+confirm safety, audit logging, and prompt-injection scrubbing.…

    by adelaidasofia · MCP server

    Listed on: Official MCP Registry, Claude Code: claude-plugins-community, Community GitHub marketplaces · Describes nearly the same job

  • FastMCP server for bidirectional sync between personal and team Obsidian vaults

    FastMCP server for bidirectional sync between personal and team Obsidian vaults.

    by adelaidasofia · MCP server

    Listed on: Official MCP Registry, Community GitHub marketplaces · Describes nearly the same job

  • GigaMail

    Mail and calendar on your real mailbox (Microsoft 365 or IMAP) through the GigaMail MCP server, with out-of-band human approval on every send, delete and calendar write.

    by Adecubed · Plugin bundle

    Listed on: Community GitHub marketplaces · Describes nearly the same job

  • Atlassian MCP

    Connect to Atlassian products including Jira and Confluence. Search and create issues, access documentation, manage sprints, and integrate your development workflow with…

    by atlassian · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Official MCP Registry, Claude Code: claude-plugins-community, Community GitHub marketplaces · Describes nearly the same job

Has a listing on Copilot CLI: github/awesome-copilot (5)
  • anarlog

    Query Anarlog meetings locally, or connect through OAuth to read opted-in Cloud snapshots.

    by fastrepl · Plugin bundle

    Listed on: Copilot CLI: github/awesome-copilot · Describes nearly the same job

  • connector-namespaces

    Interactive GitHub Copilot canvas for discovering, connecting, and managing hosted MCP servers from an Azure Connector Namespace.

    by Azure · Plugin bundle

    Listed on: Copilot CLI: github/awesome-copilot · Describes nearly the same job

  • mcp-m365-copilot

    Comprehensive collection for building declarative agents with Model Context Protocol integration for Microsoft 365 Copilot

    by Awesome Copilot Community · Plugin bundle

    Listed on: Copilot CLI: github/awesome-copilot · Describes nearly the same job

  • BLEA

    Safe BLE diagnostics, evidence workflows, and guarded automation for AI agents.

    by Nitmi · MCP server

    Listed on: Official MCP Registry, Copilot CLI: github/awesome-copilot · Describes nearly the same job

  • msgraph-developer-skills

    Builds and modernizes Microsoft Graph applications with minimal, purpose-built API clients. The plugin identifies the required Microsoft Graph endpoints and their least-privileged…

    by microsoftgraph · Plugin bundle

    Listed on: Copilot CLI: github/awesome-copilot · Describes nearly the same job

Has a listing on Copilot CLI: github/copilot-plugins (5)
  • workiq

    Query Microsoft 365 data with natural language — emails, meetings, documents, Teams messages, and more.

    by microsoft · Plugin bundle

    Listed on: Copilot CLI: github/copilot-plugins · Describes nearly the same job

  • workiq-productivity

    WorkIQ productivity skills powered by the local WorkIQ CLI — read-only insights across email, meetings, calendar, Teams, SharePoint, projects, and people.

    by microsoft · Plugin bundle

    Listed on: Copilot CLI: github/copilot-plugins · Describes nearly the same job

  • microsoft-365-agents-toolkit

    Toolkit for building Microsoft 365 Copilot declarative agents — scaffolding, JSON manifest development, and capability configuration.

    by microsoft · Plugin bundle

    Listed on: Copilot CLI: github/copilot-plugins · Describes nearly the same job

  • canvas-apps

    Build Power Apps Canvas Apps using the Canvas Authoring MCP server.

    by microsoft · Plugin bundle

    Listed on: Copilot CLI: github/copilot-plugins · Describes nearly the same job

  • mcp-apps

    Generate MCP App widgets for MCP tools. Produces self-contained HTML widgets using the MCP Apps protocol.

    by microsoft · Plugin bundle

    Listed on: Copilot CLI: github/copilot-plugins · Describes nearly the same job

Has a listing on Cursor: cursor/plugins (5)
  • Outlook Calendar

    List, create, update, and cancel Microsoft Outlook calendar events.

    by Cursor · Plugin bundle

    Listed on: Cursor: cursor/plugins · Describes nearly the same job

  • Calendly

    Check availability and book, cancel, or reschedule.

    by Cursor · Plugin bundle

    Listed on: Cursor: cursor/plugins · Describes nearly the same job

  • SharePoint

    Search and read Microsoft SharePoint sites, document libraries, files, and lists.

    by Cursor · Plugin bundle

    Listed on: Cursor: cursor/plugins · Describes nearly the same job

  • Attio

    Search and update CRM records, lists, notes, and tasks.

    by Cursor · Plugin bundle

    Listed on: Cursor: cursor/plugins · Describes nearly the same job

  • Smartsheet

    Query and update sheets, rows, and workspaces.

    by Cursor · Plugin bundle

    Listed on: Cursor: cursor/plugins · Describes nearly the same job

Has a listing on Docker MCP Catalog (5)
  • Alfresco

    A minimal Model Context Protocol (MCP) server for Alfresco providing tools via the Alfresco REST API.

    by AlfrescoLabs · MCP server

    Listed on: Docker MCP Catalog · Describes nearly the same job

  • Plugged.in Proxy

    A unified MCP proxy that aggregates multiple MCP servers into one interface, enabling seamless tool discovery and management across all your AI interactions. Manage all your MCP…

    by VeriTeknik · MCP server

    Listed on: Docker MCP Catalog · Describes nearly the same job

  • Postman MCP Server

    Give your AI agents trusted access to the full Postman platform.

    by postman.com · MCP server

    Listed on: Official MCP Registry, Docker MCP Catalog · Describes nearly the same job

  • ONLYOFFICE DocSpace

    ONLYOFFICE DocSpace is a room-based collaborative platform which allows organizing a clear file structure depending on users' needs or project goals.

    by ONLYOFFICE · MCP server

    Listed on: Docker MCP Catalog · Describes nearly the same job

  • Airtable

    Read and write access to Airtable database schemas, tables, and records.

    by domdomegg · MCP server

    Listed on: Official MCP Registry, Docker MCP Catalog · Describes nearly the same job

Has a listing on Official MCP Registry (5)
  • iCloud Calendar (CalDAV)

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

    by Glob0x17 · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • AddCal

    Publish public calendars and events others subscribe to: RSVPs, feeds and add-to-calendar links.

    by addcal.co · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • dav-mcp io.github.PhilflowIO/dav-mcp

    AI-orchestrated calendars, contacts & tasks across any DAV platform. 27 tools, field-agnostic.

    by PhilflowIO · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • Google Calendar MCP

    MCP server for the Google Calendar API: events, recurrence, invitations, availability, calendars.

    by A1-x-Tech · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • Calensync

    Manage Google, Outlook & Apple calendars and create private sync rules from chat.

    by calensync.live · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.

Is this your plugin?

Add it to your projects and prove you maintain it with a file in its repository, a file on your domain or a DNS record. You get alerts when a marketplace lists it, drops it, changes its verified mark or what it asks for, and its remote endpoint goes on monitoring as a web service.

Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.

Where the data comes from: how the catalog is built