Visual Replay Studio

The Replay Studio is a full-screen, step-through debugger that lets you walk through every pipeline step an event went through — with payload inspection, status indicators, and keyboard navigation.

Overview

When an event passes through the pipeline, each node records what it did: validation results, delivery attempts, transform outputs, and more. The Replay Studio visualizes these steps as an interactive sequence that you can navigate forward and backward.

ℹThe Replay Studio shows what actually happened — it replays recorded pipeline trace data. For hypothetical "what if" scenarios, use Time Travel instead.

Opening the Replay Studio

Open an event detail drawer

From the webhook's events list, click any event row to open the detail drawer.

Click the Replay button

In the event detail drawer, click Open Replay Studio. The view expands to full screen.

Studio layout

The Replay Studio has three main areas:

Progress bar (top)

A horizontal progress bar spans the top of the screen. Each step in the pipeline is represented by a clickable dot. The current step is highlighted, and completed steps are filled. Click any dot to jump directly to that step.

Step info panel (left)

Shows details about the currently selected step:

Field	Description
Step number	Position in the pipeline sequence (e.g., Step 2 of 5)
Node type	The type of node that processed this step
Node name	The configured name of the node
Status	Outcome: success, failed, blocked, skipped
Duration	How long this step took
Detail	Human-readable description of what happened

Payload viewer (right)

A JSON viewer showing the payload at this step in the pipeline. If a transform modified the payload, you see the transformed version. For delivery steps, the response body is also shown.

Control	Keyboard shortcut	Action
Reset	Home	Jump to the first step
Prev	Left Arrow (←)	Go to the previous step
Next	Right Arrow (→)	Go to the next step
End	End	Jump to the last step
Step dots	Click	Jump to a specific step

✦Use the left and right arrow keys to quickly step through the pipeline. The payload viewer updates instantly so you can watch the payload transform at each step.

Example session

textReplay Studio steps

Step 1 of 4 — Webhook: "Stripe Payments"
  Status: RECEIVED
  Payload: { "type": "payment_intent.succeeded", ... }

Step 2 of 4 — Schema Validator: "Payment Schema"
  Status: PASS
  Payload: { "type": "payment_intent.succeeded", ... }  (unchanged)

Step 3 of 4 — Delivery: "Payment API"
  Status: SUCCESS (200 OK, 142ms)
  Request: POST https://api.example.com/webhooks
  Response: { "received": true }

Step 4 of 4 — HTTP Action: "Slack Notification"
  Status: SUCCESS (200 OK, 89ms)
  Transformed payload: { "text": "Payment received: $50.00" }

When to use

Debugging failures: Step through to find exactly where and why an event failed.
Verifying transforms: See the payload before and after each transform node.
Understanding flow: Visualize the path an event takes through a complex multi-node pipeline.
Comparing delivery attempts: For retried events, each attempt appears as a separate step. Combine with Delivery Comparison for a side-by-side diff.