Provides tools for sending, updating, and deleting messages, listing and joining channels, retrieving channel history and replies, listing users and getting user info, adding/removing reactions, searching messages, and uploading files in Slack.
Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@@cloud9-labs/mcp-slack send a welcome message to #general"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
MCP server for Slack API integration - 14 messaging and channel management tools.
{
"mcpServers": {
"slack": {
"command": "npx",
"args": ["-y", "@cloud9-labs/mcp-slack"],
"env": {
"SLACK_BOT_TOKEN": "xoxb-your-bot-token"
}
}
}
}Related MCP server: Slack MCP Server
Tool | Description |
slack_post_message | Send a message to a Slack channel |
slack_update_message | Edit an existing message |
slack_delete_message | Delete a message from a channel |
slack_list_channels | List all channels in the workspace |
slack_get_channel_info | Get detailed information about a channel |
slack_get_channel_history | Retrieve message history from a channel |
slack_get_replies | Get threaded replies for a message |
slack_join_channel | Join a Slack channel |
slack_list_users | List all users in the workspace |
slack_get_user_info | Get user profile information |
slack_add_reaction | Add emoji reaction to a message |
slack_remove_reaction | Remove emoji reaction from a message |
slack_search_messages | Search messages across channels |
slack_upload_file | Upload files to Slack |
Set your Slack bot token as an environment variable:
export SLACK_BOT_TOKEN="xoxb-..."To create a Slack bot:
Create a new app
Enable Bot User OAuth Token
Grant required scopes (messages:write, channels:read, users:read, etc.)
Copy the Bot User OAuth Token
MIT
This server cannot be installed
Unclaimed servers have limited discoverability.
If you are the server author, to access and configure the admin panel.
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