Slack

The Slack node lets you interact with Slack from within an orchestration — send messages, manage channels, look up users, upload files, and more.

Credentials

This node requires a Slack OAuth2 credential. To create a credential:

Go to Settings → Credentials → New Credential
Select Slack OAuth2
Authenticate with your Slack workspace

Operations

Message

Operation	Description
`Send`	Post a message to a channel or user
`Update`	Edit an existing message
`Delete`	Delete a message
`Get Permalink`	Get a permanent link to a message
`Search`	Search messages in a workspace
`Reply`	Reply to a message in a thread

Channel

Operation	Description
`Archive`	Archive a channel
`Close`	Close a direct message channel
`Create`	Create a new public or private channel
`Get`	Retrieve details of a channel
`Get Many`	List multiple channels
`History`	Retrieve messages from a channel’s history
`Invite`	Invite a user to a channel
`Join`	Join a channel
`Kick`	Remove a user from a channel
`Leave`	Leave a channel
`Member`	List members of a channel
`Open`	Open a direct message channel
`Rename`	Rename a channel
`Set Purpose`	Set the purpose (description) of a channel
`Set Topic`	Set the topic of a channel
`Unarchive`	Unarchive a channel

User

Operation	Description
`Get`	Get a user’s profile by ID or email
`Get Many`	List users in a workspace
`Get Status`	Get a user’s current status
`Update Profile`	Update a user’s profile fields

File

Operation	Description
`Get`	Get file metadata
`Get Many`	List files in a workspace
`Upload`	Upload a file to a channel
`Delete`	Delete a file

Reaction

Operation	Description
`Add`	Add a reaction emoji to a message
`Get`	Get reactions on a message
`Remove`	Remove a reaction from a message

Parameters: Send a Message

Parameter	Type	Required	Description
Send Message To	Select	Yes	The destination: a channel or a user
Message Type	Select	Yes	`Simple Text Message` — plain text with markdown support; or `Blocks` — use Slack’s Block Kit UI builder for rich messages with form fields, sections, and more
Message Text	String	Yes	The message text to post. Supports Slack markdown.
Options	Collection	No	Additional options (thread reply, username override, icon emoji, etc.)

Output Data

A successful Send Message operation returns:

{
  "ok": true,
  "channel": "C012AB3CD",
  "ts": "1678901234.000100",
  "message": {
    "text": "Hello from AgentVerse!",
    "type": "message",
    "user": "U012AB3CD"
  }
}

Reference fields in downstream nodes:

{{ slack.ts }}
{{ slack.channel }}

Slack Trigger — Trigger an orchestration from a Slack event
AI Agent — Generate message content with an LLM before sending

Getting Started

Trigger Nodes

Action Nodes

Logic Nodes

AI Nodes

Operations

Slack

Slack

Credentials

Operations

Message

Channel

User

File

Reaction

Parameters: Send a Message

Output Data

​Slack

​Credentials

​Operations

​Message

​Channel

​User

​File

​Reaction

​Parameters: Send a Message

​Output Data

​Related Nodes

Slack

Credentials

Operations

Message

Channel

User

File

Reaction

Parameters: Send a Message

Output Data

Related Nodes