Slack MCP Server

Enables AI agents to interact with Slack workspaces through the Model Context Protocol. Supports reading channel messages, sending messages, listing channels, and reacting to messages. Cannot delete messages or manage workspace settings, limiting potential for destructive actions.

Security Assessment

Level	caution
Permissions	read:channels, write:messages, read:messages
Data Exposure	content
Requires Supervisor	No
Risk Notes	Can read channels and send messages. Cannot delete messages or manage workspace.

Integration

Type	`mcp-server`
Package	`@modelcontextprotocol/server-slack`
Install	`npx -y @modelcontextprotocol/server-slack`
Auth	api-key

Capabilities

Actions	list_channels, read_messages, send_message, react_to_message, search_messages
Input Types	text
Output Types	text, json
When to Use	When the agent needs to read or send messages in Slack channels for team communication.
When NOT to Use	When the communication target is not Slack (use Discord, email, etc. instead).

Category: communication · Free tier: Yes · Source

Collected: 2026-03-15 from https://github.com/modelcontextprotocol/servers/tree/main/src/slack