Input & Output

Output Ports

Every Slack node operation produces exactly two output ports:

message / send — Success Output

{
  "messageSent": true,
  "channel": "C012AB3CD",
  "messageTs": "1748000000.000100",
  "threadTs": "1748000000.000100",
  "incomingText": "",
  "conversationId": "",
  "status": "success",
  "errorCode": "",
  "payload": { "ok": true, "channel": "C012AB3CD", "ts": "1748000000.000100", "message": { ... } }
}

message / sendAndWait — Success Output

This operation posts the message, then suspends the workflow. It resumes on the success port when a reply message arrives in the same channel or thread. The output contains the reply text from the responding user.

user / get — Success Output

{
  "userId": "U012AB3CD",
  "userName": "jane.smith",
  "isBot": false,
  "deleted": false,
  "realName": "Jane Smith",
  "displayName": "Jane Smith",
  "email": "jane.smith@acmecorp.com",
  "statusText": "Working from home",
  "statusEmoji": ":house_with_garden:",
  "avatarUrl": "https://avatars.slack-edge.com/2025-01-10/abc123_512.jpg",
  "status": "success",
  "errorCode": "",
  "payload": { ... }
}

channel / create — Success Output

{
  "id": "C07XYZ1234",
  "name": "project-atlas-q2",
  "isPrivate": true,
  "created": 1748000000,
  "status": "success",
  "errorCode": "",
  "payload": { ... }
}

file / upload — Success Output

{
  "fileId": "F08ABCDE01",
  "fileName": "sales-report-2026-05.csv",
  "permalink": "https://acmecorp.slack.com/files/U012AB3CD/F08ABCDE01/sales-report-2026-05.csv",
  "fileType": "csv",
  "status": "success",
  "errorCode": "",
  "payload": { ... }
}

Other Operation Output Summaries

message / sendEphemeral

Returns messageSent (boolean), channel, messageTs, status, errorCode, payload. Ephemeral messages have no persistent ts in the channel history.

message / update

Returns channel, messageTs (the timestamp of the updated message), text (the new text as confirmed by Slack), status, errorCode, payload.

message / delete

Returns channel, messageTs (the deleted message's timestamp), status, errorCode.

message / getPermalink

Returns channel, permalink (the permanent URL string), status, errorCode, payload.

message / search

Returns matches (array of message objects — each with channel, ts, text, username), total (integer total result count), status, errorCode, payload.

channel / get

Returns the full channel object: id, name, isPrivate, topic, purpose, memberCount, created (Unix timestamp), status, errorCode, payload.

channel / getMany

Returns channels (array of channel summary objects), count (number returned), status, errorCode, payload.

channel / getHistory

Returns messages (array of message objects — each with ts, text, userId, type), hasMore (boolean), status, errorCode, payload.

channel / invite / join / kick / leave / archive / unarchive / open / close

These operations return channelId, status, errorCode, and payload. They confirm the action was applied without returning detailed data.

channel / getMembers

Returns members (array of user ID strings), count (integer), status, errorCode, payload.

channel / rename

Returns channelId, name (new channel name), status, errorCode, payload.

channel / getReplies

Returns messages (array of thread reply objects — each with ts, text, userId), count, status, errorCode, payload.

channel / setPurpose / setTopic

Returns channelId, purpose or topic (the value that was set), status, errorCode, payload.

file / get

Returns fileId, fileName, fileType, size (bytes), permalink, created (Unix timestamp), status, errorCode, payload.

file / getMany

Returns files (array of file summary objects), total, page, pageCount, status, errorCode, payload.

reaction / add / remove

Returns channel, timestamp, emoji, status, errorCode. These are confirmation-only responses.

reaction / get

Returns reactions (array of objects — each with name, count, users array if Full=true), status, errorCode, payload.

user / getMany

Returns users (array of user summary objects), count, status, errorCode, payload.

user / getProfile

Returns userId, displayName, realName, email, phone, title, statusText, statusEmoji, avatarUrl, status, errorCode, payload.

user / getStatus

Returns userId, statusText, statusEmoji, statusExpiration (Unix timestamp when status expires, 0 if no expiry), status, errorCode, payload.

user / updateProfile

Returns userId, displayName, status ("success"), errorCode, payload.

userGroup / create

Returns usergroupId, name, handle, description, dateCreate (Unix timestamp), status, errorCode, payload.

userGroup / disable / enable

Returns usergroupId, name, isEnabled (boolean), userCount (if IncludeCount=true), status, errorCode, payload.

userGroup / getMany

Returns userGroups (array of group objects — each with id, name, handle, description, userCount if IncludeCount=true, users array if IncludeUsers=true), count, status, errorCode, payload.

userGroup / getUsers

Returns users (array of Slack user ID strings), count, status, errorCode, payload.

userGroup / addUsers

Returns usergroupId, users (full updated member list), count, status, errorCode, payload.

userGroup / update

Returns usergroupId, name, handle, description, dateUpdate (Unix timestamp), status, errorCode, payload.

Error Port Output

All 44 operations route to the error port on failure with the following fields:

{
  "status": "error",
  "errorCode": "channel_not_found",
  "payload": {
    "ok": false,
    "error": "channel_not_found"
  }
}