"Accessing the OpenAI API" matching MCP servers:

Measures the shape of idle time in a booking calendar. Separates gaps that can actually be sold from structurally unsellable dead time, accounting for turnover time and the booking start grid. Fully offline, no API key required.

Provides real, official public holiday data for ~100 countries with tools to list holidays for a year and check if a specific date is a holiday. Free, no API key required, powered by Nager.Date.

MCP server that wraps the AddEvent Calendar & Events API v2, allowing Claude to create, search, retrieve, update, and delete events, calendars, and RSVP attendees, plus list timezones.

Enables AI assistants to manage events, venues, organizers, and tickets on WordPress sites via CRUD operations.

Enables AI agents and scripts to read and manage events on your account — guest lists with questionnaire answers, CSV export, check-in, approvals, invites and Text Blasts — through your own signed-in Chrome session, with no public API or official integration required. Runs locally over stdio, streamable HTTP, a REST API with OpenAPI docs, and a Python client.

Lets Claude read email and read/write calendar events for personal Microsoft accounts (Hotmail/Outlook/Live) via Microsoft Graph API, filling the gap where the official connector only supports work/school accounts.

Unofficial MCP server for accessing and managing TimeTree calendar data, supporting events, memos, and comments via email/password authentication.

Enables AI agents to interact with Microsoft Teams through Microsoft Graph API, using delegated device-code authentication to act on behalf of the user.

Enables an agent to read and manage calendars across Nextcloud, iCloud, Google and any CalDAV server, merging every account into one sorted view. Exposes tools for listing and searching events, finding free time, and creating, updating or deleting events, with secrets kept out of the config.

Unofficial MCP server for accessing and managing TimeTree calendar data, including events, memos, and comments, with secure email/password authentication.

MCP server for the eRezo API that enables managing professional contacts and events directly from Claude, including listing, creating, updating, and deleting contacts, as well as event registration.

Read-only MCP server to search and read emails and calendar events from a BlueMind account via the BlueMind REST API.

A Model Context Protocol (MCP) server for accessing Fathom AI API endpoints (meetings, recordings, transcripts, summaries, teams, team members) via GET operations.

An MCP server for accessing Dutch school schedules from Magister. Enables Claude and other MCP-compatible AI assistants to query school schedules, drop-off times, and pick-up times.

Enables Claude to schedule, query, and cancel Calendly events via Calendly API v2, allowing direct event management without the public booking form.

Enables AI agents and scripts to manage bookings, provider assignment, rescheduling, cancellations, customers, quotes, invoices, and dashboard data through a self-hosted API and MCP interface using your own Chrome session.

Self-hosted Fresha API and MCP server in Python: 17 Fresha tools for appointments, clients, services, team and reviews, on the session of your own Chrome. Personal use.

An MCP server for the Luma Events API that enables creating, updating, and managing events and guests.

Enables AI assistants to manage Cozi Family Organizer accounts, including creating and updating shopping/todo lists, managing calendar appointments, and accessing family member information.

A Model Context Protocol (MCP) server for the Calendly API. Manage events, invitees, and schedule meetings directly via AI assistants.

A sample MCP server built with FastMCP that demonstrates basic tools and a Google OAuth integration for accessing Google APIs like Calendar.

Enables AI agents to read and manage Microsoft 365/Outlook email and calendar, with destructive actions (send email, create event) requiring human approval.

Enables interaction with Calendly's scheduling platform via MCP, allowing users to manage events, invitees, and schedule meetings directly using the Calendly API.

Provides access to Granola notes, meeting transcripts, calendar events, and document panels through the Granola API, enabling search and retrieval of meeting-related content.

Enables AI assistants to manage Microsoft Outlook email and calendar through the Microsoft Graph API, including reading, sending, searching emails, and handling calendar events.

Exposes the ProDoctor Cloud API as MCP tools for AI agents to manage appointments, patients, users, and procedures.

Enables natural language access to the Eventbrite API for creating, managing, and interacting with events, venues, and categories.

Enables querying of Hangzhou Dianzi University course schedules, exams, and campus events by accessing the HDUHelp ICS calendar subscription. Supports getting today's and upcoming events, as well as keyword search.

Enables AI clients to operate Feishu/Lark through MCP protocol, including sending messages, managing chats, accessing contacts, and checking calendar.

MCP server for Akiflow task management with Meeting Assistant support. Enables creating, updating, scheduling tasks, managing calendars, and accessing meeting recordings, summaries, and action items.