"A GitHub repository for agent guardrails" matching MCP servers:

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 to manage Nextcloud files, user info, sharing, calendar, and contacts through optimized MCP tools with dynamic tool selection and enterprise-grade security.

Enables AI assistants to book meetings, check availability, and manage Cal.com scheduling through natural conversation.

Calendar and task management with kernel-level scraping for robust parsing, and integrates with DocMost wiki as source of truth.

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.

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 voice assistants to find nearby service providers, connect users to live video representatives for natural conversation, and handle appointment booking. It also returns confirmed bookings so the assistant can add them to its calendar.

Unofficial MCP server for Skylight Calendar that enables calendar, task, list, meal, and profile management through typed commands and SDK integration.

Provides MCP tools for operations desk tasks including calendar availability, customer lookup, quote calculation, and notification sending. Includes an internal agentic orchestrator that consumes the same MCP tools via protocol.

An always-on AI chief-of-staff that manages tasks, calendar, notes, habits, and more through chat, with a private markdown vault and multimodal tools.

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.

Enables AI assistants to search, read, compose, and manage Thunderbird mail, filters, contacts, and calendar events through the Model Context Protocol.

Exposes tools for querying prices, checking availability, and scheduling car detailing appointments, enabling conversational voice interactions without the web platform.

A versatile Model Context Protocol server that enables AI assistants to manage calendars, track tasks, handle emails, search the web, and control smart home devices.

This MCP server enables natural language management of Google Calendar and Google Sheets, exposing tools for scheduling, updating, searching events, managing spreadsheets, and more. It uses an LLM to automatically select and chain tool calls based on user requests.

Enables Claude to safely propose and, upon explicit approval, apply calendar and project changes in Outlook and ClickUp, governed by binding preferences and an append-only audit trail.

Exposes GitHub, SQLite database, and calendar tools, resources, and prompts over MCP so any MCP client can query data, manage issues, and schedule events.

Enables an AI agent to discover and call bounded Microsoft 365 tools for reading calendar, mail, Teams channels, SharePoint, and Power Platform metadata through MCP, with synthetic fixtures by default and optional Microsoft Entra/Graph tenant integration.

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 AI assistants to interact with Microsoft 365 and Office services through the Microsoft Graph API, providing tools for email, calendar, files, Teams, SharePoint, and more with configurable permissions and output formats.