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A workflow step supported by your app should execute


Works with

Events API

Steps from Apps is deprecated
We're retiring all Slack app functionality around Steps from Apps in September 2024. Learn more.

    "token": "XXYYZZ",
    "team_id": "TXXXXXXXX",
    "enterprise_id": "EXXXXXXXX",
    "api_app_id": "AXXXXXXXX",
    "event": {
        "type": "workflow_step_execute",
        "callback_id": "open_ticket",
        "workflow_step": {
            "workflow_step_execute_id": "1036669284371.19077474947.c94bcf942e047298d21f89faf24f1326",
            "inputs": {
                "title": "Requesting help with my computer",
                "submitter": "W1234567890"
            "outputs": [
                    "type": "text",
                    "name": "title",
                    "label": "Title of Ticket"
                    "type": "text",
                    "name": "id",
                    "label": "Ticket ID"
    "type": "event_callback",
    "event_id": "EvXXXXXXXX",
    "event_time": 1234567890

This event notifies you when a workflow step supported by your app has been started.

The example above shows the complete Events API payload, including the event wrapper.

  • team_id indicates which workspace the Slack app is installed on.
  • api_app_id indicates the id of the app.
  • event.callback_id indicates the specific workflow step type.
  • event.workflow_step.workfklow_step_execute_id is used in the callback to complete the workflow step.
  • event.workflow_step.inputs provides the step's required inputs to be used by your app.
  • event.workflow_step.outputs specifies the steps's expected outputs to be set by your app when the step completes.

When an event occurs, we will send an HTTP POST request to your Request URL. The outer payload is uniform across all Events API methods, and contains fields like team_id and event. Learn more