The MCP tool directory.

Registers new participants added to a Slack call.

Adds a custom emoji to a Slack workspace given a unique name and an image URL; subject to workspace emoji limits.

Add an emoji reaction to a message. Use emoji name without colons (e.g. "thumbsup" not ":thumbsup:").

Adds a specified emoji reaction to an existing message in a Slack channel, identified by its timestamp; does not remove or retrieve reactions.

Archives a Slack public or private channel, making it read-only; the primary 'general' channel cannot be archived.

Archives a Slack conversation by its ID, rendering it read-only and hidden while retaining history, ideal for cleaning up inactive channels; be aware that some channels (like #general or certain DMs) cannot be archived and this may impact connected integrations.

Archive a channel. Archived channels can be unarchived later.

DEPRECATED: Posts a message to a Slack channel, direct message, or private channel. Use `send_message` instead.

Clears the Slack status for the authenticated user, removing any custom text and emoji.

Closes a Slack direct message (DM) or multi-person direct message (MPDM) channel, removing it from the user's sidebar without deleting history; this action affects only the calling user's view.

Creates a Slack reminder with specified text and time; time accepts Unix timestamps, seconds from now, or natural language (e.g., 'in 15 minutes', 'every Thursday at 2pm').

Creates a new User Group (often referred to as a subteam) in a Slack workspace.

Creates a new Slack Canvas with the specified title and optional content.

Creates a new public or private Slack channel with a unique name; the channel can be org-wide, or team-specific if `team_id` is given (required if `org_wide` is false or not provided).

Customizes URL previews (unfurling) in a specific Slack message using a URL-encoded JSON in `unfurls` to define custom content or remove existing previews.

DEPRECATED: Customizes URL previews (unfurling) in a specific Slack message. Use `customize_url_unfurl` instead.

Deletes a specific comment from a file in Slack; this action is irreversible.

Permanently deletes an existing file from a Slack workspace using its unique file ID; this action is irreversible and also removes any associated comments or shares.

Permanently and irreversibly deletes a specified public or private channel, including all its messages and files, within a Slack Enterprise Grid organization.

Deletes a pending, unsent scheduled message from the specified Slack channel, identified by its `scheduled_message_id`.

Deletes an existing Slack reminder, typically when it is no longer relevant or a task is completed; this operation is irreversible.

Deletes a Slack Canvas permanently.

Delete a file from the workspace.

Delete a message. Bot can only delete messages it posted.

Delete a pending scheduled message before it is sent. Cannot delete messages posting within 60 seconds.

Deletes the Slack profile photo for the user identified by the token, reverting them to the default avatar; this action is irreversible and succeeds even if no custom photo was set.

Deletes a message, identified by its channel ID and timestamp, from a Slack channel, private group, or direct message conversation; the authenticated user or bot must be the original poster.

Disables a specified, currently enabled Slack User Group by its unique ID, effectively archiving it by setting its 'date_delete' timestamp; the group is not permanently deleted and can be re-enabled.

Update an existing bookmark in a channel.

Edits a Slack Canvas with granular control over content placement. Supports replace, insert (before/after/start/end) operations for flexible content management.