"OpenTimestamps - Bitcoin-based timestamping protocol" matching MCP servers:

Enables personal productivity management by exposing MCP tools to create, retrieve, list, update, complete, and delete tasks and calendar events, with validation and conflict detection.

This project implements a Python-based MCP (Model Context Protocol) server that acts as an interface between Large Language Models (LLMs) and the Google Calendar API. It enables LLMs to perform calendar operations via natural language requests.

MCP server for managing Google Calendar reminders with time-based and location-based triggers, enabling creation, listing, and deletion of reminders.

An ADT-based calendar management system that enables users to create, update, and organize events by category with integrated stamina tracking functionality.

unofficial MCP (Model Context Protocol) server for Reclaim.ai calendar integration - manage tasks, habits, and smart scheduling through AI assistants like Claude.

MCP server for Open-Xchange & standards-based mail: email (IMAP/SMTP), Sieve filters, CalDAV calendar, CardDAV contacts, free/busy.

A Model Context Protocol server that enables AI assistants to interact with Gmail services, supporting email operations, draft management, and calendar functionality through Google API integration.

Enables AI assistants to interact with native Apple applications including Messages, Notes, Contacts, Mail, Reminders, Calendar, and Maps. Features smart contact resolution, priority-based search, and comprehensive Apple ecosystem integration with enhanced error handling.

Real public/bank/school holiday lookup for 206 countries via a rule-based calendar engine (moveable holidays like Easter computed astronomically, not guessed). Priced per call via x402/USDC on Base.

A Model Control Protocol server for integrating with DingTalk, enabling users to send messages, retrieve conversation/user information, and query calendar events through Claude.

Enables AI assistants to safely manage appointment bookings for appointment-based businesses over MCP, including searching availability, holding, confirming, rescheduling, and canceling bookings, and reading business policies.

Provides AI agents with calendar access and syncing capabilities through the Model Context Protocol.

Provides Claude with full access to Apple Calendar on macOS for event management, smart scheduling, and schedule analytics. It enables natural language event creation, conflict detection, and template-based scheduling through AppleScript integration.

Unofficial MCP server for Akiflow that enables AI agents to manage tasks, projects, and calendar via the Model Context Protocol.

Native macOS Calendar & Reminders MCP server with 25 tools via Apple EventKit. Supports recurring events, location-based reminder triggers, multi-keyword search, duplicate detection, conflict checking, and batch operations across iCloud/Google/Exchange calendars.

Multi-server MCP tool bridge that exposes banking, email, calendar, and custom API tools for AI clients via the Model Context Protocol.

Enables AI clients to manage Trilium Notes with full CRUD operations, search, calendar integration, and system administration through the Model Context Protocol.

MCP server giving Claude access to Tuta mail, calendar, contacts and drive. Supports mail modes (dedicated/shared/folder), trusted sender filtering with E2E verification, and Docker-based setup.

Enables MCP clients to list and inspect Lark/Feishu calendar events, including recurring instances, attendees, and event details, without handling large iCalendar payloads. It provides read-only calendar access with cached freshness checks and secure key-based authentication.

A Model Context Protocol server that enables AI assistants to interact with Microsoft Outlook for calendar management, email operations, and search functionality.