Schema | Slack MCP Server

Describes the environment variables required to run the server.

Name	Required	Description	Default
`SLACK_TEAM_ID`	No	Optional Slack team ID (e.g., T0123456789).
`SLACK_ACCESS_TOKEN`	Yes	Slack OAuth user token (starts with xoxp-).

Features and capabilities supported by this server

Capability	Details
`tools`	{}

Functions exposed to the LLM to take actions

Name	Description
slack_list_workspaces	List all connected Slack workspaces. Shows available workspaces and indicates which one is currently active.
slack_switch_workspace	Switch to a different Slack workspace. All subsequent Slack operations will use the selected workspace.
slack_get_current_workspace	Get information about the currently active Slack workspace.
slack_list_channels	List all Slack channels (public and private) accessible to the user
slack_get_channel_info	Get detailed information about a specific Slack channel
slack_get_channel_members	Get the list of members in a Slack channel
slack_get_messages	Get messages from a Slack channel
slack_get_thread_replies	Get replies in a message thread
slack_send_message	Send a message to a Slack channel
slack_reply_to_thread	Reply to a message thread in Slack
slack_search_messages	Search for messages across all channels (requires user token with search:read scope)
slack_list_users	List all users in the Slack workspace
slack_get_user_info	Get detailed information about a specific user
slack_get_user_profile	Get a user's profile information
slack_list_files	List files shared in the workspace
slack_get_file_info	Get detailed information about a specific file
slack_upload_file	Upload a file to a Slack channel
slack_add_reaction	Add an emoji reaction to a message
slack_remove_reaction	Remove an emoji reaction from a message
slack_get_reactions	Get all reactions on a specific message

Interactive templates invoked by user choice

Name	Description
No prompts

Contextual data attached and managed by the client

Name	Description
No resources

Slack MCP Server