Loop Node (Realtime)

The Loop Node bridges execution pipelines dynamically, allowing voice flows to recurse safely.

The Heartbeat Problem

In extreme cases, a caller might place an AI assistant on hold, causing an execution graph pause. A standard V2 implementation will break due to HTTP max-time bounds (60 seconds).

However, when a Loop node circles back through an active Realtime Canvas (such as returning to a Wait or prompt state), the Unity application continues to pump ping heartbeats safely across the queue.

You can use the Loop Node to continuously recycle prompt logic, ensuring that your automated agent repeatedly tests intent constraints until a caller properly verifies their identity over the SIP phone line, without ever collapsing the WebSocket.