RA
Retell AI io.github.mindstone/mcp-server-retell-ai Retell AI MCP server: voice agent phone calls, agent management, LLMs, and voice discovery
Version check not run yet
Communication and chat Official MCP Registry · npm Local FSL-1.1-MIT
SL
Slack io.github.mindstone/mcp-server-slack Slack MCP server: channels, messages, threads, reactions, users, files, and scheduled messages
Version check not run yet
Communication and chat Official MCP Registry · npm Local FSL-1.1-MIT
SL
Slack io.github.mrfentmen/slack-mcp Query the Slack Web API (bot token; set SLACK_BOT_TOKEN, xoxb): channels, history, post messages.
Version check not run yet
Communication and chat Official MCP Registry · npm Local MIT
TE
Telegram io.github.mrfentmen/telegram-mcp Use the Telegram Bot API (free bot; set TELEGRAM_BOT_TOKEN): bot info, send messages, read updates.
Version check not run yet
Communication and chat Official MCP Registry · npm Local MIT
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Telegram for AI agents: messages, chats, media, and contacts in bot and user-account modes.
Version check not run yet
Communication and chat Official MCP Registry · PyPI Local APACHE-2.0
NT
ntfy io.github.ni-c/ntfy-mcp Publish ntfy notifications, read the message cache, and manage users and topic access
Version check not run yet
Communication and chat Official MCP Registry · npm Local MIT
MG
Ms Graph io.github.nitin27may/ms-graph-mcp Microsoft Graph MCP server — 85 tools for mail, calendar, Teams, files, SharePoint, and Entra ID
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Files and storage Official MCP Registry · PyPI Local MIT
JS
Js8call io.github.qso-graph/js8call-mcp JS8Call MCP server for HF messaging: decode stream, heard stations, message traffic
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Communication and chat Official MCP Registry · PyPI Local GPL-3.0-OR-LATER
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Local-first memory of how you write: style profile and real reply examples from your chat exports
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Communication and chat Official MCP Registry · PyPI Local MIT
IM
Impact io.github.shashwatgtm/impact-mcp IMPACT: 8 B2B positioning and messaging tools by Helix GTM Consulting
100% up · 30 days
Communication and chat Official MCP Registry · npm Local Remote MIT
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Operate one Evolution API (WhatsApp) instance: chats, history, sending, groups, settings.
100% up · 30 days
Communication and chat Official MCP Registry · PyPI Local Remote MIT
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Read a personal Telegram account over MTProto; every write is a plan a human applies.
Version check not run yet
Communication and chat Official MCP Registry · PyPI Local MIT
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MCP server for Microsoft Graph: Outlook mail and calendar, plus read-only Microsoft Teams
Version check not run yet
Communication and chat Official MCP Registry · PyPI Local MIT
FM
fmsg io.github.markmnl/fmsg-mcp Federated messaging with your fmsg hosting provider. Connect with OAuth or an API key.
Address set by you
Communication and chat Official MCP Registry · npm Local Remote 1k a week MIT
UN
Unphurl io.github.123Ergo/unphurl URL intelligence for AI agents and developers. 16 tools, 25 signal weights, 20 free checks.
100% up · 30 days
Communication and chat Official MCP Registry · npm Local Remote MIT
GH
Ghl io.github.northrosetech/ghl-mcp-server GoHighLevel CRM for AI agents. 60+ tools for contacts, messaging, calendars, and payments.
Version check not run yet
Communication and chat Official MCP Registry · npm Local MIT
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Agent intercommunication - messaging, channels, shared state, and real-time events
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Communication and chat Official MCP Registry · npm Local 70 a week MIT
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Microsoft Teams for Claude — read any chat or channel and its unread messages; send and react
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Communication and chat Official MCP Registry · npm Local 806 a week MIT
EM
Emerald io.github.kfireliyahu/emerald The database under the chat: a local SQLite file a model asks for rows, not notes to re-read.
Version check not run yet
Databases Official MCP Registry · npm Local 800 a week AGPL-3.0-ONLY
DI
Discord io.github.PaSympa/discord-mcp A lightweight, multi-guild Discord MCP server with 95+ tools
Version check not run yet
Communication and chat Official MCP Registry · npm Local 746 a week MIT