"Connecting to an External API for Agent-Based Replies" 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.

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

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.

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

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.

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

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.

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

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

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.

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

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.

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.

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 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.