On channel member left

slack.onChannelMemberLeft emits member_left_channel events for conversations visible to the installed bot.

automations/watch-slack-membership.automation.ts

import { automation } from "automate.ax"
import { slack } from "automate.ax/slack"

export default automation("Watch Slack membership", () => {
  const membership = slack.onChannelMemberLeft()
  // Use membership.userId to revoke channel-specific access.
})

The result includes userId, conversationId, conversationTypeCode ("C" or "G"), the typed original event, and the complete envelope. Slack’s membership event does not distinguish public from private conversations; use slack.getSlackConversation when that distinction matters.

Built-in triggers

Built-in actions

Runtime utilities

Integrations

On channel member left