Tools / Slack

Full Slack workspace integration so agents can read channels, send messages, reply in threads, DM teammates, search conversations, react with emoji, and share files. Acts as the connected user — private channels are limited to ones they belong to.

List Channels

List public and private channels in the workspace. Defaults to channels the user can see; pass only_member=true to filter to channels they actually belong to.

Returns: Channels with name, id, member count, and topic.

List DMs and Group DMs

List direct-message and group-direct-message conversations. Use this to find a conversation id to read or write to.

Returns: Direct-message and group-DM conversations with their ids.

List Workspace Users

List members of the workspace. Filters out bots and deleted accounts by default; pass include_bots / include_deleted to override.

Returns: Workspace members with name, id, email, and admin status.

Find User

Find a workspace member by email address or user id. Use this to resolve someone to a user_id before calling send_message with user_id.

Returns: The matching user with name, email, and Slack id.

Read Messages

Read recent messages from a channel or DM. Pass thread_ts to read a specific thread instead of the channel timeline. Messages are newest-first.

Returns: Messages with text, author, reactions, and any attached files.

Send Message

Send a message to a channel, DM, or thread. Pass channel_id for a known channel, or user_id for a 1:1 DM (the skill opens the DM automatically). Pass thread_ts to reply inside an existing thread.

Returns: The posted message ts and permalink.

Edit Message

Edit the text of a previously-sent message. Only works for messages the connected user posted — Slack rejects edits on other people's messages.

Returns: The edited message ts and permalink.

Delete Message

Delete a previously-sent message. Only works for messages the connected user posted.

Returns: Confirmation the message was deleted.

Add or Remove Reaction

Add or remove an emoji reaction on a message. Pass the emoji name without colons (e.g. "thumbsup", not ":thumbsup:").

Returns: Confirmation the reaction was added or removed.

Search Messages

Full-text search across workspace messages. Supports Slack query modifiers: in:#channel-name, from:@username, before:YYYY-MM-DD, after:YYYY-MM-DD, has::emoji:. Results are newest-first by default.

Returns: Matching messages with channel context, text, and shareable permalinks.

Upload File

Upload a file from a public URL and share it into a channel or DM. Supports any file type — Slack renders images, PDFs, and videos inline.

Returns: The new file id and permalink.

List Files

List files previously shared in the workspace, optionally filtered by channel or uploader. Useful for finding a specific attachment or auditing what has been shared.

Returns: Files with name, type, size, uploader, and shareable permalink.