"How to send queries to an Elasticsearch cluster" matching MCP servers:

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.

A self-hosted MCP server that provides secure access to iCloud Mail, Calendar, and Contacts, enabling agents to read and send email, manage calendar events, and search contacts with safety controls like approval for outgoing messages.

An MCP server to manage time tracking and time off on Woffu, allowing users to clock in days, view balances, request leave, and check team availability.

Enables AI agents to read and send email, handle attachments and manage calendar invitations through their own IMAP/SMTP mailboxes, with per-mailbox sender and recipient allow lists and automatic HTML-to-Markdown conversion. It runs as a single self-hosted Docker container, exposing the same tools over MCP and REST.

Enables an AI assistant to connect to multiple Google accounts at once, searching and acting across Gmail, Drive, Calendar, and Contacts from a single interface.

Read-only MCP server for Gingr pet-care facility data, enabling queries about owners, animals, reservations, appointments, services, and staff via natural language.

An MCP server providing comprehensive email capabilities via IMAP and SMTP, enabling AI assistants to read, search, send, manage, schedule, and analyze emails across multiple accounts.

Provides read-only access to BIT101 community posts, course reviews, personal schedules, grades, and Lexue calendar events, enabling natural language queries for Beijing Institute of Technology students.

MCP server for Evite that lets you read and act on events as guest or host: list events, view guest lists, RSVP, send messages, and create/edit events.

Enables AI assistants to access Aruba email and calendar services through IMAP, SMTP, and CalDAV protocols. Users can list, search, and send emails with custom signatures, as well as manage calendar events and invitations.

MCP server to list and get events from Evento's public API using an API key.

Enables local AI agents to search and read iCloud Mail, draft and send reviewed replies, and manage calendar events via a local MCP connection.

Enables AI assistants to read, send, and manage emails, calendars, and contacts in a Fastmail account via the JMAP protocol.

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

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

Gives time-blind LLMs and agent frameworks a real clock: current time and timezone, elapsed task duration, countdowns to deadlines, timezone conversion, session heartbeats, cron-style due checks, and session-level timers. This lets locally hosted or self-built models stop hallucinating the time and actually perceive how long a task or conversation has been running.

Enables AI assistants to securely read, search, draft, and send Outlook emails, manage calendar events, and access mailbox folders through a local MAPI connection to Windows Outlook, with human-in-the-loop safeguards.

An MCP server that connects Claude Desktop and Claude Code to your Calendly account, enabling natural-language scheduling management.

MCP server for Outlook/Office365 that lets AI agents read inboxes, send emails, and manage calendar events and availability via 11 tools, using OWA REST API with Playwright fallback.

Enables Claude to interact with Canvas LMS, allowing natural language queries about courses, deadlines, grades, and feedback.