Reply to thread - Automate.ax

replyToThread posts beneath a parent message. Use the parent’s timestamp, not a reply timestamp, as threadTimestamp.

Example

automations/reply-to-slack-thread.automation.ts

import { automation } from "automate.ax"
import { onAppMention, replyToThread } from "automate.ax/slack"

export default automation("Reply to Slack mentions", () => {
  const mention = onAppMention()
  replyToThread({
    conversation: mention.conversationId,
    threadTimestamp: mention.message.timestamp,
    text: "I received your request.",
  })
})

Inputs

Input	Type	Required	Default	Description
`conversation` / `channel`	`string`	Yes	—	Conversation containing the parent. If both aliases are supplied, they must match.
`threadTimestamp`	`string`	Yes	—	Parent message timestamp.
`replyBroadcast`	`boolean`	No	`false`	Also shows the reply in the conversation timeline.
`text`	`string`	One content field	—	Plain-text content or fallback.
`blocks`	`Record<string, JsonValue>[]`	One content field	—	Up to 50 Block Kit blocks.
`attachments`	`Record<string, JsonValue>[]`	One content field	—	Up to 100 legacy attachments.
`unfurlLinks` / `unfurlMedia`	`boolean`	No	Slack default	Link and media unfurl behavior.
`account`	`string \| IntegrationAccountReference<"slack">`	No	Project default	Slack binding.

Output

Returns the reply’s conversationId, timestamp, and normalized message. The result’s timestamp identifies the reply; continue using the original parent timestamp to address the thread.

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