"Using npx to run tools directly without requiring an API" matching MCP servers:

Enables deterministic calculations for AI API and subscription costs, meeting time zones, recurring schedules, and cron next-run previews, returning normalized inputs, units, assumptions, dated sources, and links to results.

Provides a personal hybrid running and strength training coach that integrates with Intervals.icu, offering 28-day plans, activity reconciliation, and delivery of scheduled workouts to calendars via MCP.

Enables a family assistant to search documents, inspect, fill, edit, and sign files, manage scheduled work and runs, and perform web searches, with each tool gated by the caller's groups.

Exposes Korean-language utility tools to AI agents over a stdio MCP server, covering Hangul initial-consonant (chosung) extraction, conversion of integers into Korean currency words, lookup of Korean public holidays, and business-day checks for a given date.

MCP server for the Stashcat messenger API. Enables AI assistants to read and send messages, manage channels, conversations, files, polls, and more.

Experimental server that implements the Model Context Protocol (MCP) for Nylas API, providing resources, tools, and prompts to help developers integrate email, calendar, and contacts functionality with AI applications.

Enables to interact with Nylas API for email, calendar, and contacts via MCP, providing documentation, code samples, and code generation tools.

Enables models to get South Korean public holidays and business-day math right, convert won amounts to and from Korean words, verify business registration check digits, compute 만 나이 and Civil Act deadlines, convert lunar dates, and normalize or mask Korean phone numbers, addresses, names and text byte counts. It runs as a stateless remote endpoint with a free daily quota and no key required.

Enables AI workflows and coding agents to discover and invoke hosted calendar tools through an authenticated, policy-controlled gateway, with setup diagnostics and migration guidance.

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

Japanese calendar API for AI agents. Provides Rokuyo, Rekichu, Eto, 24 Solar Terms, and fortune judgments. MCP + REST API.

A collection of tools that enable AI assistants to interact with Apple applications and services including Contacts, Notes, Messages, Mail, Reminders, Calendar, Maps, and Web Search through the Model Context Protocol.

Lets Cursor's AI agent read a public Google Calendar through the Model Context Protocol, so users can ask natural-language questions about events and schedules.

Scheduling and booking engine for AI agents. Check availability, hold slots, and confirm appointments with two-phase booking and conflict-free resource management.

A stateless MCP server that forwards calendar operations to a CalDAV server, enabling AI assistants to list, search, create, update, delete events, and query free/busy information via encrypted tokens.

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.

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.

Enables AI agents and scripts to run a Booksy Biz account through your own signed-in Chrome session, exposing 28 tools for appointments, open slots, time off, clients, services, staff, reviews, Message Blasts, and reports over MCP, REST, or Python. Read-only mode and confirmation-gated client-facing actions let you plan schedules, reschedules, and outreach with human approval.

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.

Enables clients to retrieve public center, catalog, object, calendar, and event information, calculate preliminary accommodation quotes, and suggest groups; its local stdio mode can also save estimates and submit requests after explicit human confirmation.

An MCP server for managing Proton Mail, Pass, Drive, and Calendar through local IMAP/SMTP, pass-cli, and Proton Drive CLI, enabling AI agents to operate the mailbox, manage passwords, sync files, and classify emails.

Enables comprehensive calendar management with capabilities to create, list, update, and delete events through a Model Context Protocol server integrated with Google Calendar.

Exposes the Appointment Scheduler API to AI agents as an MCP server, enabling them to list users and services, check availability, book, list, and cancel appointments via natural language.

A full-featured Model Context Protocol server that gives AI assistants real-time access to Google Workspace services including Drive, Gmail, Calendar, Sheets, Docs, and Apps Script.

Enables clients to turn a single event or booking screenshot into a source-backed action card with questions, independent review, and a confirmed .ics calendar export, without autonomous booking or reminder delivery.

Enables AI agents to interact with Google Workspace services (Gmail, Drive, Docs, Tasks, Calendar) through OAuth 2.0 authentication, providing 25+ operations for business automation and productivity.

Enables Claude to query and manage Mail2000 calendar events, including agenda, search, booking, updating, and deleting events through natural language.

Enables AI assistants to interact with Fastmail calendars via CalDAV, allowing them to view, create, update, and delete calendar events using natural language.

Enables AI assistants to discover and book local service businesses like barbers, plumbers, and mechanics directly through MCP-compatible tools.

Enables AI assistants to interact with Fastmail services, providing tools for comprehensive email management, contact searching, and calendar event coordination via the JMAP API. It supports advanced features like threaded conversations, attachment handling, and bulk mailbox operations through natural language.

An MCP server for Deputy that provides read and write access to rosters, timesheets, and shifts. It runs locally and privately, communicating directly with your own Deputy install.

Enables AI agents to look up businesses, find free appointment slots, book, list and cancel appointments at salons, barbershops, nail and brow studios and clinics. Works read-only without a customer login by returning a pre-filled booking link, and can also run against a built-in demo with sample businesses.

An MCP server for Apple iCloud Calendar over CalDAV, supporting list, search, create, update, delete, RSVP, and free-time finding without local macOS dependencies.

Enables users to track job and internship applications, statuses, deadlines, and interviews, with upcoming reminders and CSV or Markdown export. It runs locally and stores data in a single JSON file without network calls, accounts, or API keys.

Read-only MCP server for CareMan Dienstplan that exposes REST API as tools for LLMs to query duty rosters, shift requests, vacant duties, and shift swaps.

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 language models to directly manage Kronos 2.0 bookings and schedules, including checking available slots, listing resources and services, creating or moving appointments, linking amoCRM deals to bookings, and subscribing to webhooks via the Public API v1.

Enables Claude to manage a service business front desk by searching customers, checking real-time availability, creating and canceling appointments without double-booking, and generating revenue reports from actual data.

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.

An MCP server that provides 49 tools to access Microsoft Outlook for Mac, enabling management of mail, calendar, contacts, tasks, and notes via AppleScript.