"A simple MCP server or implementation" matching MCP servers:

An MCP server that enables AI agents to pause and request human approval or information via Slack, Telegram, or macOS dialogs before proceeding with actions.

A lightweight MCP server for sending push notifications via ntfy.sh, supporting customizable titles, priorities, tags, and action buttons.

A simple MCP server for interacting with OpenAI assistants. This server allows other tools (like Claude Desktop) to create and interact with OpenAI assistants through the Model Context Protocol.

Provides text-to-speech and Telegram notification capabilities via the Model Context Protocol. Supports multiple TTS providers and Telegram messaging with optional setup web interface.

Provides over 1,000 creative ways to decline requests across four categories (polite, humorous, professional, and creative). The MCP server wraps a REST API to help users craft professional rejections through natural language interactions.

Connects AI agents to anonymous strangers for asking and answering questions in character.

Enables sending, listing, searching, and reading Outlook emails through Microsoft Graph API with OAuth authentication.

A simplified MCP server for accessing Slack API, enabling AI assistants to list channels, post messages, reply to threads, add reactions, and get channel history.

A Simple Model Context Protocol server that enables AI assistants to interact with Jira, allowing operations like fetching tickets, adding comments, and updating ticket status.

Discover and connect your agents with other agents via A2A protocol. Share resources for free or fee.

Provides AI agents with real email infrastructure, enabling them to create inboxes, send/receive messages, and extract verification codes from incoming mail.

Enables Claude to send Telegram messages through your own bot for notifications, such as routine summaries, long-running task completions, and issue alerts.

Enables querying client onboarding status and basic client info (name, family) via two tools, designed for integration with Microsoft Copilot and Teams.

Enables AI assistants to draft content such as PR descriptions, tickets, or messages, with a review window for live preview, editing, and approval before submission.

Enables AI assistants to interact with GroupMe conversations through agentic tools, including a unified inbox for groups and DMs, reading and searching message history, viewing highlights, sending messages, and liking or unliking messages.

Scans suspicious messages, URLs, and text for scams inside any MCP-compatible AI assistant. No signup or API key needed for anonymous use.

Official JetAPI MCP server for sending WhatsApp, Telegram (personal account or bot), SMS, VK/OK and MAX messages and files from AI agents. Supports channel cascades, scheduling, bulk mailings, delivery status tracking, phone number lookup and webhook management.

A Model Context Protocol (MCP) server for sending iOS push notifications via Bark.

An MCP server that connects Claude to a 3CX Phone System (V20+), enabling user management, call monitoring, contact search, and forwarding configuration.

Simple and free publishing of content on the web for AI Agents