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This is reference content about building functions and workflows. Learn more if you're not yet familiar with this new Slack platform paradigm.
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reply_in_thread

Reply to a message by creating or adding to a thread

Facts

Schema ID

Schema.slack.functions.ReplyInThread

Schema reference

slack#/functions/reply_in_thread

Required scopes

chat:writechat:write.public

Input parameters

Required parameters
message
Schema.slack.types.rich_text
·Required
The textual message to send in thread
message_context
Schema.slack.types.message_context
·Required
An individual instance of a message
Optional parameters
reply_broadcast
Schema.types.boolean
·Optional
Also send the message to the top-level conversation.
  • true
  • false
metadata
Schema.slack.types.object
·Optional
Additional metadata about the message, which can then be used an workflow event trigger.
interactive_blocks
Schema.slack.types.blocks
·Optional
Buttons to send with the message. Must be wrapped in a block. Only accepts the workflow_button element.

Output parameters

Required parameters
message_context
Schema.slack.types.message_context
·Required
An individual instance of the message you sent
message_link
Schema.types.string
·Required
Permalink URL of the message that was sent
Optional parameters

Usage guide

Based on certain conditions, you can reply to a message in-thread.

Example workflow step

const replyInThreadStep = ExampleWorkflow.addStep(
  Schema.slack.functions.ReplyInThread,
  {
    message_context: sendMessageStep.outputs.message_context,
    reply_broadcast: false,
    message: "Thank you for submitting a message to #sos, Gilligan.",
  },
);

To reply in-thread with buttons, they must be wrapped in a block (example: section block). Then, use the workflow_button element.

Example workflow step with interactive blocks

const replyInThreadButton = ExampleWorkflow.addStep(
  Schema.slack.functions.ReplyInThread,
  {
    message_context: sendMessageStep.outputs.message_context,
    reply_broadcast: false,
    message: "Please confirm your request for help in #sos.",
    interactive_blocks: [
      {
        "type": "section",
        "text": {
          "type": "plain_text",
          "text": "Click to confirm",
        },
        "accessory": {
          "type": "workflow_button",
          "text": {
            "type": "plain_text",
            "text": "Confirm",
          },
          "action_id": "button-action-id-custom",
          "workflow": {
            "trigger": {
              "url":
                "https://slack.com/shortcuts/Ft0123ABC456/xyz...zyx",
            },
          },
        },
      },
    ]
  },
);