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Slack Trigger

The Slack Trigger starts an orchestration when a Slack event occurs — such as a new message in a channel, a direct message to a bot, a reaction added, or a file shared. Slack Trigger Node

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Use Cases

  • Respond to bot commands or mentions in Slack channels
  • Trigger AI processing when a user sends a message to a channel
  • Automate workflows based on Slack reactions or file uploads
  • Build Slack bots powered by AgentVerse orchestrations

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Credentials

This node requires a Slack OAuth2 credential. To create a credential:
  1. Go to Settings → Credentials → New Credential
  2. Select Slack OAuth2
  3. Authenticate with your Slack workspace

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Node Reference

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Parameters

ParameterTypeDescription
CredentialCredentialSelect or create a Slack OAuth2 credential
Trigger OnMulti-selectThe Slack event types to listen for (default: Any Event)

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Trigger On Options

OptionDescription
Any EventFires on all Slack events delivered to the webhook
MessageA message is posted in a channel or DM
Bot MentionThe bot is @mentioned in a channel
Reaction AddedA user adds a reaction emoji to a message
File SharedA file is uploaded and shared in a channel
Channel CreatedA new channel is created in the workspace
Member Joined ChannelA user joins a channel

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Options

OptionDescription
Resolve IDsWhen enabled, resolves Slack user/channel IDs to their human-readable names and returns them alongside the IDs
Usernames or IDs to IgnoreEvents from these users will not trigger the orchestration

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Webhook URL

The Slack Trigger displays a unique Webhook URL in the node panel. Configure this URL in your Slack app’s Event Subscriptions settings to route Slack events to AgentVerse.

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Output Data

The trigger outputs the full Slack event payload: 
{
  "type": "message",
  "text": "Hey @bot, summarize this document",
  "user": "U012AB3CD",
  "channel": "C012AB3CD",
  "ts": "1678901234.000100",
  "team": "T012AB3CD"
}
Reference fields in downstream nodes: 
{{ slackTrigger.text }}
{{ slackTrigger.user }}
{{ slackTrigger.channel }}
  • Slack — Send messages and interact with Slack within an orchestration
  • AI Agent — Process the Slack message with an LLM