Slack MCP Server

List all channels in the Slack workspace.

Args: types: Comma-separated channel types (public_channel, private_channel, mpim, im) exclude_archived: Whether to exclude archived channels limit: Maximum number of channels to return (1-1000)

Get detailed information about a specific Slack channel.

Args: channel_id: The ID of the channel

List all users in the Slack workspace.

Args: limit: Maximum number of users to return include_locale: Include locale information for each user

Get detailed information about a specific Slack user.

Args: user_id: The ID of the user

Send a message to a Slack channel.

Args: channel: Channel ID or name text: Message text (fallback text for notifications) thread_ts: Thread timestamp for replies blocks: JSON string of Block Kit blocks for rich formatting

Update an existing Slack message.

Args: channel: Channel ID where the message exists ts: Timestamp of the message to update text: New message text (fallback text for notifications) blocks: JSON string of Block Kit blocks for rich formatting

Delete a message from a Slack channel.

Args: channel: Channel ID where the message exists ts: Timestamp of the message to delete

Get message history for a Slack channel.

Args: channel: Channel ID limit: Maximum number of messages to return oldest: Only messages after this timestamp latest: Only messages before this timestamp

Search for messages across the Slack workspace.

Args: query: Search query sort: Sort by 'score' or 'timestamp' sort_dir: Sort direction 'asc' or 'desc' count: Number of results to return

Upload a file to one or more Slack channels.

Args: channels: Comma-separated list of channel IDs content: File content as text filename: Name for the file title: Title of the file initial_comment: Initial comment for the file

Add a reaction emoji to a message.

Args: channel: Channel ID where the message exists timestamp: Timestamp of the message emoji_name: Name of the emoji (without colons)

Remove a reaction emoji from a message.

Args: channel: Channel ID where the message exists timestamp: Timestamp of the message emoji_name: Name of the emoji (without colons)

Get information about the Slack workspace/team.

Create a new Slack channel.

Args: name: Name for the new channel is_private: Whether the channel should be private

Archive a Slack channel.

Args: channel: Channel ID to archive

Unarchive a Slack channel.

Args: channel: Channel ID to unarchive

Invite users to a Slack channel.

Args: channel: Channel ID users: Comma-separated list of user IDs

Set the topic for a Slack channel.

Args: channel: Channel ID topic: New topic text

Set the purpose for a Slack channel.

Args: channel: Channel ID purpose: New purpose text

Send a formatted message using Block Kit with common elements.

Args: channel: Channel ID or name title: Header text (optional) text: Main message text (optional) fields: Comma-separated fields for side-by-side display (optional) context: Context text at bottom (optional) thread_ts: Thread timestamp for replies (optional)

Send a structured notification message with status indicator.

Args: channel: Channel ID or name status: Status type (success, warning, error, info) title: Notification title description: Main description details: Additional details (optional) thread_ts: Thread timestamp for replies (optional)

Send a formatted list message.

Args: channel: Channel ID or name title: List title items: Newline or comma-separated list items description: Optional description text thread_ts: Thread timestamp for replies (optional)

Send an interactive message with buttons.

Args: channel: Channel ID or name title: Message title description: Message description buttons: JSON string of button configurations [{"text": "Button Text", "action_id": "action_1", "style": "primary"}] thread_ts: Thread timestamp for replies (optional)

Send a formatted code snippet message.

Args: channel: Channel ID or name title: Code snippet title code: The code content language: Programming language for syntax highlighting (optional) description: Optional description thread_ts: Thread timestamp for replies (optional)

Send a form-like message with a select menu.

Args: channel: Channel ID or name title: Form title description: Form description select_options: JSON string of select options [{"text": "Option 1", "value": "opt1"}] select_placeholder: Placeholder text for select menu select_action_id: Action ID for the select menu thread_ts: Thread timestamp for replies (optional)

Send a formatted announcement message.

Args: channel: Channel ID or name title: Announcement title message: Main announcement message author: Author name (optional) timestamp: Custom timestamp (optional) thread_ts: Thread timestamp for replies (optional)