MCP Slack — MCP Protocol

A server that sends messages to Slack workspaces and reads channels

Basic Information

What is this program?

This server is a server implementation for sending messages to Slack workspaces and reading channels, included in the MCP official reference server collection. It can be run with a single npx command, and once registered in the configuration of an MCP host app, agents can use it immediately.

Main use: automate Slack notifications and communication with agents

What problems does it solve?

• ('In Slack tasks', 'When an agent needs to use a server feature to send messages to Slack workspaces and read channels', 'Connect immediately with standard MCP tools')
• ('Quick connection', 'When you need to run with npx without setting up a separate server', 'Reuse the official implementation')
• ('Safe access', 'When you need access while limiting allowed scope', 'Restrict via path and permission parameters')

Key Features

Exposed tools

slack_list_channels, slack_post_message

• Use case: Provide agents with Slack notification and communication automation
• Result: Standard MCP tool calls
• Limitations: Be careful with permission settings

Installation and execution

npx (execution)

Run @modelcontextprotocol/server-slack with npx.

npx -y @modelcontextprotocol/server-slack /path

Real-world usage examples

Register with host

Add a server entry to mcp.json.

{"mcpServers":{"slack":{"command":"npx","args":["-y","@modelcontextprotocol/server-slack","/path"]}}

Advantages and limitations

Advantages

• Official project implementation
• One-line npx execution
• Exposes standard MCP tools

Things to consider before use

• Requires host app configuration
• Be careful with permission and path settings

Comparison with similar programs

Official resources and further learning

• Official homepage — https://github.com/modelcontextprotocol/servers
• Official documentation / knowledge base — https://github.com/modelcontextprotocol/servers
• Installation & deployment — npx -y @modelcontextprotocol/server-slack
• Release notes — https://github.com/modelcontextprotocol/servers/releases
• Source / development resources — https://github.com/modelcontextprotocol/servers

Version and supported environment information was verified on the official site as of 2026-10-18. Installation commands may vary depending on the distribution and version you use, so please also check the official installation documentation.

Actual execution screen

Composite example — not an actual execution result. The screen is a composite example and not an actual execution result.

!MCP Slack usage example

Actual server in operation

Source (HTML): https://games.aidebatehub.com/programs/mcp/protocol/server-slack.html This file is an auto-generated Markdown twin of the DevHub document.