Slack: New Message in Channels

Trigger Communications

Triggers when a new message is posted in selected Slack channels. Useful for monitoring conversations, triggering notifications, content moderation, or automated responses.

At a Glance

Field	Value
Trigger ID	slack-new-message-in-channels
Category	Communications
Tags	slack, communication, message, chat, monitoring

Trigger Configuration

Field	Type	Required	Description
conversations	array	No	Select one or more channels to monitor for new messages. Leave empty to monitor all channels.

Trigger Result

Field	Type	Required	Description
triggeredAt	string	Yes	Timestamp when the event was received (UTC, RFC3339 format)
eventType	string	No	Slack event type (e.g. message)
channel	string	No	Channel ID where the message was posted
user	string	No	User ID who posted the message
text	string	No	Message text content
ts	string	No	Message timestamp
thread_ts	string	No	Thread timestamp if message is in a thread

Workflow Root Example

json
{  "nodes": {    "root": {      "type": "slack-new-message-in-channels",      "payload": {        "conversations": []      },      "children": [        "log_event"      ]    },    "log_event": {      "type": "log",      "payload": {        "message": "Triggered at {{$trigger.triggeredAt}}"      },      "children": []    }  }}

Downstream nodes can use {{$trigger.triggeredAt}} and any result fields listed above. Event triggers usually expose the raw source payload under a field such as event, body, trade, or raw.