MCP Server for Slack

A Model Context Protocol (MCP) server implementation for integrating AI assistants with Slack workspaces.

Overview

This package provides an MCP server that enables AI assistants to interact with Slack workspaces. It allows AI models to:

List and browse channels
Send messages to channels
Reply to threads
Add reactions to messages
Retrieve channel history
Get thread replies
List users and retrieve user profiles

Installation

# Install from npm
npm install shouting-mcp-slack

# Or install globally
npm install -g shouting-mcp-slack

You can find the package on npm: shouting-mcp-slack

Prerequisites

You need to set up a Slack Bot and obtain the necessary credentials:

Create a Slack App in the Slack API Console
Add the following Bot Token Scopes:
- channels:history
- channels:read
- chat:write
- reactions:write
- users:read
- users:read.email
Install the app to your workspace
Copy the Bot User OAuth Token

Configuration

The server requires the following environment variables:

SLACK_BOT_TOKEN: Your Slack Bot User OAuth Token
SLACK_TEAM_ID: Your Slack Team ID

Usage

Running as a CLI Tool

# Set environment variables
export SLACK_BOT_TOKEN=xoxb-your-token
export SLACK_TEAM_ID=your-team-id

# Run the server
mcp-server-slack

Using in Your Code

import { Server } from "@modelcontextprotocol/sdk/server/index.js";
import { SlackClient } from "shouting-mcp-slack";

// Initialize the server and client
const server = new Server({...});
const slackClient = new SlackClient(process.env.SLACK_BOT_TOKEN);

// Register your custom handlers
// ...

Available Tools

The server provides the following Slack integration tools:

slack_list_channels: List available channels
slack_post_message: Send a message to a channel
slack_reply_to_thread: Reply to a thread
slack_add_reaction: Add a reaction to a message
slack_get_channel_history: Get message history from a channel
slack_get_thread_replies: Get replies in a thread
slack_get_users: List users in the workspace
slack_get_user_profile: Get a user's profile

License

ISC

Author

shouting.hsiao@gmail.com

Repository

https://github.com/z9905080/mcp-slack

This server cannot be installed

security - not tested

license - permissive license

quality - not tested

How are these scores calculated?

remote-capable server

The server can be hosted and run remotely because it primarily relies on remote services or has no dependency on the local environment.

A Model Context Protocol server implementation that enables AI assistants to interact with Slack workspaces, allowing them to browse channels, send messages, reply to threads, add reactions, and retrieve user information.

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