@cloud9-labs/mcp-slack
MCP server for Slack API integration with 14 tools for messaging and channel management, including sending messages, managing channels, searching messages, and file uploads.
README
@cloud9-labs/mcp-slack
MCP server for Slack API integration - 14 messaging and channel management tools.
Installation
{
"mcpServers": {
"slack": {
"command": "npx",
"args": ["-y", "@cloud9-labs/mcp-slack"],
"env": {
"SLACK_BOT_TOKEN": "xoxb-your-bot-token"
}
}
}
}
Tools
| 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 |
Configuration
Set your Slack bot token as an environment variable:
export SLACK_BOT_TOKEN="xoxb-..."
To create a Slack bot:
- Go to https://api.slack.com/apps
- 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
License
MIT
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