Slack MCP Server vs WhatsApp MCP Server

Slack MCP Server and WhatsApp MCP Server are both MCP servers but differ in their categories and capabilities. Slack MCP Server (communication) is The Slack MCP server (built by Ivan Korotovsky) connects AI assistants like Claude, Cursor, and Windsurf directly to Slack workspaces, enabling conversational access to your team communication channels without requiring workspace admin approval for a bot install. Its standout feature is a "no permission" stealth mode — it authenticates using your own personal Slack session tokens (xoxc/xoxd, or a stored browser session) rather than requiring a Slack App with OAuth scopes, so it works even in locked-down workspaces where you cannot create bots. It also supports full OAuth Bot Token auth and Enterprise/GovSlack deployments for teams that prefer a conventional app install. Tools exposed include reading channel and DM/group-DM history with smart pagination, searching messages across the workspace, posting messages and thread replies, listing channels and users, and adding reactions. Common use cases include automating standups by posting summaries directly to team channels, searching past Slack conversations to surface decisions or context, monitoring specific channels for keywords or alerts, and drafting replies to thread discussions — all from natural-language prompts. Supports both Stdio and SSE transports plus proxy configuration for corporate networks. Install with: `npx slack-mcp-server@latest --transport stdio`. A separate official-style integration exists from Zencoder (@zencoderai/slack-mcp-server) for teams that prefer standard Bot Token OAuth over session-token auth. Compatible with Claude Desktop, Cursor, VS Code, Windsurf, and Cline. while WhatsApp MCP Server (communication) is The WhatsApp MCP server connects Claude and other MCP clients directly to your personal WhatsApp account so an AI assistant can search, read, and send messages, contacts, and media through natural language. Unlike hosted bots that require the paid WhatsApp Business API, this community server (lharries/whatsapp-mcp, the most-adopted WhatsApp MCP server on GitHub) links to your regular account via the WhatsApp Web multidevice API using the Go whatsmeow library — you authenticate once by scanning a QR code, then re-authenticate roughly every 20 days. It runs as two components: a Go bridge that maintains the WhatsApp connection and stores your full message history in a local SQLite database, and a Python MCP server that exposes tools to the agent. Messages stay on your machine and are only sent to the LLM when a tool explicitly reads them, so you control what the model sees. Available tools cover searching contacts and chats, reading individual and group conversations (including images, video, documents, and audio), sending text messages to people or groups, and sending media — with optional FFmpeg-based conversion to play audio as native WhatsApp voice notes. Note the "lethal trifecta" caution in the README: because it combines private data, tool access, and external content, prompt injection could risk data exfiltration..

Choose Slack MCP Server if you need communication capabilities and prefer npm installation. Choose WhatsApp MCP Server if you need communication capabilities and prefer source installation. Consider your specific use case and integration requirements.

Yes, you can use multiple MCP servers together in Claude Desktop, Cursor, VS Code, and other MCP-compatible clients.Slack MCP Server and WhatsApp MCP Servercan complement each other if their capabilities don't overlap.