On reaction added - Automate.ax

onReactionAdded emits reactions added to Slack items visible to the installed bot.

Example

automations/handle-slack-approval.automation.ts

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

export default automation("Handle Slack approval", () => {
  const reaction = onReactionAdded()
  reaction.transform(({ reaction, item }) => ({
    approved: reaction === "white_check_mark",
    item,
  }))
})

Options

account?: string | IntegrationAccountReference<"slack"> statically selects the workspace and defaults to the project’s Slack binding.

Trigger data

Returns eventTimestamp, workspaceId, reaction (without colons), userId, optional itemUserId, and a discriminated item:

{ type: "message"; conversationId; messageTimestamp; conversationType? }
{ type: "file"; fileId }
{ type: "fileComment"; fileId; fileCommentId }

Branch on item.type before accessing message or file-specific identifiers.

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