List custom emoji by case-insensitive name substring, with URLs or alias targets. Needs emoji:read.

List user groups and counts; include_users adds member IDs. Needs usergroups:read.

Get message reaction names, counts and users; users_complete flags partial lists. Needs reactions:read and users:read for cached user names.

Read full canvas content as Markdown (default) or HTML via canvases.getContent. Needs canvases:read.

Search with RTS and cursor; type lists default to messages in public_channel. Needs search:read.public; optionally search:read.private, search:read.im, search:read.mpim, search:read.files, search:read.users. User tokens need no action_token.

Dry-run the style gate on a draft without sending. clean=true means it would pass.

Post a Slack message AS THE USER (no app badge), via personal user token. Style gate (enforced before send unless SLACK_STYLE_GATE=off): no AI typography (em/en dash, ellipsis char, curly quotes, nbsp, bullet) - use plain ASCII; no AI-slop phrases; no concrete promises/deadlines unless allow_promise=true. Write short and plain, in the user's own voice and language. workspace: explicit alias from slack_list_workspaces. channel_id: C.../G.../D..., or a user id U... to write into the DM with that person (needs im:write). thread_ts: reply in a thread. reply_broadcast: with thread_ts, also show the reply in the channel. format: markdown (default; standard Markdown, up to 12,000 chars) or mrkdwn (Slack's own: bold, <url|label>). unfurl_links: show link previews (off by default).

Add an emoji reaction to a message AS THE USER (reactions.add, needs reactions:write). channel_id: as in slack_send_message. ts: the message timestamp. name: emoji name without colons, e.g. eyes.

Remove the user's emoji reaction from a message (reactions.remove, needs reactions:write).

Upload a local file to a Slack channel/DM AS THE USER, with an optional comment. Same style gate as slack_send_message applies to initial_comment and title. channel_id: C.../G.../D..., or a user id U... to upload into the DM with that person (your own id = your self-DM; needs im:write). thread_ts: upload as a thread reply. file_path: absolute path inside SLACK_FILE_ROOTS (default: home and temp folders; hidden files and ~/Library refused). title: file title, defaults to the filename.

File metadata by id (files.info, needs files:read): name, type, size, owner, mode, and every message that shares it (channel, ts, thread_ts). External files carry external_url.

List files, newest first (files.list, needs files:read). Filter by channel_id and/or user_id (uploader). types: comma list of all, spaces, snippets, images, gdocs, zips, pdfs. page: 1-based; the reply says how many pages there are.

Download a Slack file by id to a local folder (needs files:read). Returns the saved path. Saved as <file_id>-, replacing an earlier copy only once the new one is complete. dest_dir: inside SLACK_FILE_ROOTS, like slack_upload_file. External files (Google Drive and the like) are not downloaded: the reply gives their external_url.

Link to a message (chat.getPermalink): opens it in Slack, inside its thread for replies.

Replace the text of one of YOUR messages (chat.update, chat:write). Messages by others are refused even with an admin token. Same style gate and format as slack_send_message.

Delete one of YOUR messages (chat.delete, chat:write). Messages by others are refused even with an admin token. Cannot be undone.

Schedule a message AS THE USER (chat.scheduleMessage, chat:write). post_at: ISO 8601 with a timezone (2026-10-23T09:00:00+03:00) or unix seconds, up to 120 days ahead. Other arguments and the style gate as in slack_send_message.

Your messages scheduled but not yet sent (chat.scheduledMessages.list), soonest first within a page. Pass next_cursor as cursor for the next page.

Cancel a scheduled message (chat.deleteScheduledMessage, chat:write).

Set the user's Slack status (users.profile.set, needs users.profile:write). Empty text and emoji clear it. emoji: name like palm_tree. expires_in_minutes: 0 keeps it until changed. The style gate applies to text: everyone in the workspace sees it.

How many messages arrived after your read marker in each of up to 20 channels/DMs (conversations.info + conversations.history). Slack's API has no full unread inbox like the app, so name the channels. count stops at limit; has_more tells there are more.

Move your read marker in a channel/DM to ts (conversations.mark; needs channels:write, groups:write, im:write or mpim:write for that kind of conversation).

List configured workspace aliases and verify token identities (auth.test; no extra scopes).

Search visible messages with raw Slack query and optional filters; returns total/page/pages. Needs search:read and users:read for cached author names; count is 1-100.

Read one history page with cursor and Slack timestamp bounds; returns messages/next_cursor/has_more. Needs the conversation's channels:history, groups:history, im:history or mpim:history; users:read for names.

Read thread pages from cursor within timestamp bounds; all_pages stops at max_pages (default 10). Returns complete=false while more remain. Needs channels:history/groups:history/im:history/mpim:history; users:read.

Find people by name via cached users.list (users:read); refresh bypasses the one-hour cache. Exact email uses users.lookupByEmail (users:read.email); U.../W... uses users.info (users:read).

Find non-archived conversations by name; types: public_channel,private_channel,im,mpim (comma-separated). Needs channels:read/groups:read/im:read/mpim:read by type; users:read for DM names. Refresh reloads the cache.

A user's name, title, email, timezone, status and role via users.info. Needs users:read, and users:read.email for the email.

Name, kind, topic, purpose, member count and your read marker via conversations.info; needs channels:read/groups:read/im:read/mpim:read for the conversation type.