Machine 2 Machine Protocol
A proof-of-concept for autonomous economic interactions between AI agents using MCP, A2A, and x402 protocols.
Communication MCP Servers
Browse 385 servers tagged Communication in the MCP Server List directory. Popular picks include Machine 2 Machine Protocol, 2Chat MCP, and Phone Carrier Detector.
2Chat MCP
Manage your WhatsApp, SMS and Phone Calls using a single MCP connector
Phone Carrier Detector
Detects Chinese mobile phone carriers, including China Mobile, China Unicom, China Telecom, and virtual operators.
CData Slack MCP Server
A read-only MCP server for Slack by CData, enabling LLMs to query live Slack data. Requires the CData JDBC Driver for Slack.
Kafka MCP Server
An MCP server for Apache Kafka, allowing clients to interact with Kafka topics.
IMAP
Browse and manage emails from any IMAP server.
Freshdesk MCP Server
An MCP server for interacting with the Freshdesk API v2, enabling management of customer support tickets and contacts.
A2A MCP Server
A bridge server connecting Model Context Protocol (MCP) with Agent-to-Agent (A2A) protocol.
Feishu/Lark OpenAPI MCP
Connect AI agents with the Feishu/Lark platform for automation, including document processing, conversation management, and calendar scheduling.
Feishu/Lark OpenAPI
Connect AI agents to Feishu/Lark APIs for automating tasks like document processing, conversation management, and calendar scheduling.
Feishu/Lark OpenAPI MCP
Connect AI agents to Feishu/Lark APIs for document processing, conversation management, and calendar scheduling.
Chara Talk MCP
Enables communication between multiple AI characters with simultaneous voice playback using VLC.
Hugging Face Spaces
Connects Claude Desktop to Hugging Face Spaces by automatically discovering and exposing Gradio endpoints as tools, enabling seamless interaction with machine…
Pikud Haoref Real-Time Alert System
Provides real-time access to Israeli emergency alerts from the official Pikud Haoref API.
Windows Notification Server
Allows AI assistants to send native Windows system notifications.
Slack MCP Server
An MCP server for interacting with Slack workspaces using user tokens, without requiring bots or special permissions.
Beeper
A server for interacting with the Beeper communication network.
Multichat
Enables parallel communication with multiple unichat-based servers, allowing users to query different language models simultaneously and compare their…
A2A Client MCP Server
An MCP server client for the Agent-to-Agent (A2A) protocol, enabling LLMs to interact with A2A agents.
MCP Reddit Server
An MCP server for interacting with the Reddit API, enabling searches for posts, comments, and subreddits.
Fastmail
Interact with Fastmail email, contacts, and calendar data using the Fastmail API.
Gmail MCP Server
Send emails with attachments through Gmail's SMTP server using AI agents.
Interact MCP
Enables real-time communication between AI assistants and users via a web-based chat interface.
Zulip MCP Server
Interact with Zulip workspaces using the Zulip API.