Slack
Integrates with Slack Web API to provide complete workspace management including channel operations,...
Open the Slack API Applications Page
Go to https://api.slack.com/apps and sign in with your Slack workspace account.Create a New App or Select an Existing One
- Click "Create New App" or select an app you have already created for your workspace.
Navigate to "OAuth & Permissions"
- In the left-hand menu, click on "OAuth & Permissions."
Add Required OAuth Scopes
- Under "Scopes" in the "Bot Token Scopes" section, add the following permissions:
channels:readchannels:managegroups:readgroups:writechat:writefiles:writeim:readmpim:readreactions:readreactions:writeteam:readusers:read
- Under "Scopes" in the "Bot Token Scopes" section, add the following permissions:
Install the App to Your Workspace
- At the top of the "OAuth & Permissions" page, click the "Install App to Workspace" button.
- Authorize the required permissions for the app.
Copy the "Bot User OAuth Token"
- After installation, a "Bot User OAuth Token" (starts with
xoxb-) will be shown in the "OAuth Tokens for Your Workspace" section. - Copy this token.
- After installation, a "Bot User OAuth Token" (starts with
Add the Token in FastMCP
- In your FastMCP connection interface, click the "Install Now" button for the Slack MCP Server.
- When prompted, enter the copied "Bot User OAuth Token" into the
SLACK_API_TOKENfield.
(Optional): Configure Slack Workspace ID
- If you want to specify a workspace, you can enter the
SLACK_WORKSPACE_ID(available in workspace settings or the app dashboard) in the appropriate field. This is optional.
- If you want to specify a workspace, you can enter the
Your Slack MCP Server connection should now be configured and ready to use.
Quick Start
Choose Connection Type for
Authentication Required
Please sign in to use FastMCP hosted connections
Configure Environment Variables for
Please provide values for the following environment variables:
started!
The MCP server should open in . If it doesn't open automatically, please check that you have the application installed.
Copy and run this command in your terminal:
Make sure Gemini CLI is installed:
Visit Gemini CLI documentation for installation instructions.
Make sure Claude Code is installed:
Visit Claude Code documentation for installation instructions.
Installation Steps:
Configuration
Installation Failed
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Slack
Experience the most powerful MCP server for Slack workspaces with advanced message and channel support. This feature-rich server allows fetching messages from channels, threads, DMs, and group DMs with embedded user info and smart history pagination by date or count. It supports enterprise workspaces, caching for faster access, and flexible transports like Stdio and SSE with proxy settings. Designed for stealth operation or secure access via OAuth, it integrates channel and thread lookups by name or ID to give rich, contextual Slack workspace data efficiently and reliably. Perfect for developers needing robust Slack data handling.
