On message posted

slack.onMessagePosted emits top-level, ordinary messages authored by people and visible to the bot across public channels, private channels, DMs, and group DMs. It excludes thread replies, bot or app messages, edits, deletions, and Slack system-message subtypes.

Example

automations/react-to-new-slack-message.automation.ts

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

export default automation("React to Slack messages", () => {
  const event = slack.onMessagePosted()
  slack.addReaction({
    conversationId: event.conversationId,
    emoji: "eyes",
    timestamp: event.transform((message) => message.timestamp),
  })
})

Options

account?: string | IntegrationAccountReference<"slack"> statically selects the workspace and defaults to the project’s Slack binding. It can’t be a signal.

Trigger data

Returns message fields including optional text, timestamp, userId, and type: "message". Conversation, event timestamp, and workspace metadata are conversationId, conversationType, eventTimestamp, and workspaceId. conversationType is "channel", "group", "im", or "mpim". event contains the typed original Slack event and envelope contains the complete Events API callback. Messages from a conversation outside the bot’s visibility don’t qualify. Use slack.onThreadReplyPosted for replies and slack.onEvent when you need every supported Slack event family.

Built-in triggers

Built-in actions

Runtime utilities

Integrations

Example

Options

Trigger data

​Example

​Options

​Trigger data

Example

Options

Trigger data