Slack MCP Server

Feature Demo

Tools

1. conversations_history

• Get messages from the channel by channelID

• Required inputs:

• Returns: List of messages with timestamps, user IDs, and text content

1. channels_list

• Get list of channels

• Required inputs:

• Returns: List of channels

Setup Guide

1. Authentication Setup

Lookup `SLACK_MCP_XOXC_TOKEN`

• Open your browser's Developer Console.

• In Firefox, under Tools -> Browser Tools -> Web Developer tools in the menu bar

• In Chrome, click the "three dots" button to the right of the URL Bar, then select More Tools -> Developer Tools

• Switch to the console tab.

• Type "allow pasting" and press ENTER.

• Paste the following snippet and press ENTER to execute: JSON.parse(localStorage.localConfig_v2).teams[document.location.pathname.match(/^\/client\/([A-Z0-9]+)/)[1]].token

Lookup `SLACK_MCP_XOXD_TOKEN`

• Switch to "Application" tab and select "Cookies" in the left navigation pane.

• Find the cookie with the name d. That's right, just the letter d.

• Double-click the Value of this cookie.

• Press Ctrl+C or Cmd+C to copy it's value to clipboard.

• Save it for later.

2. Installation

2.1. Docker

2.2. Docker Compose

2.2.1 TLS and Exposing to the Internet

• mcp-remote is capable to handle only https schemes;

• it is generally a good practice to use TLS for any service exposed to the internet;

3. Configuration and Usage

Option 1 with `stdio` transport:

Option 2 with `sse` transport:

Option 3 with `sse` transport on Windows:

Console Arguments

Environment Variables

Debugging Tools

Security

• Never share API tokens

• Keep .env files secure and private

License

Slack MCP Server

Feature Demo

Tools

1. conversations_history

• Get messages from the channel by channelID

• Required inputs:

• Returns: List of messages with timestamps, user IDs, and text content

1. channels_list

• Get list of channels

• Required inputs:

• Returns: List of channels

Setup Guide

1. Authentication Setup

Lookup `SLACK_MCP_XOXC_TOKEN`

• Open your browser's Developer Console.

• In Firefox, under Tools -> Browser Tools -> Web Developer tools in the menu bar

• In Chrome, click the "three dots" button to the right of the URL Bar, then select More Tools -> Developer Tools

• Switch to the console tab.

• Type "allow pasting" and press ENTER.

• Paste the following snippet and press ENTER to execute: JSON.parse(localStorage.localConfig_v2).teams[document.location.pathname.match(/^\/client\/([A-Z0-9]+)/)[1]].token

Lookup `SLACK_MCP_XOXD_TOKEN`

• Switch to "Application" tab and select "Cookies" in the left navigation pane.

• Find the cookie with the name d. That's right, just the letter d.

• Double-click the Value of this cookie.

• Press Ctrl+C or Cmd+C to copy it's value to clipboard.

• Save it for later.

2. Installation

2.1. Docker

2.2. Docker Compose

2.2.1 TLS and Exposing to the Internet

• mcp-remote is capable to handle only https schemes;

• it is generally a good practice to use TLS for any service exposed to the internet;

3. Configuration and Usage

Option 1 with `stdio` transport:

Option 2 with `sse` transport:

Option 3 with `sse` transport on Windows:

Console Arguments

Environment Variables

Debugging Tools

Security

• Never share API tokens

• Keep .env files secure and private

License