InteractionRoutingDecision

One router’s choice for one turn: which agent took the participant’s turn, and why. It is never part of any participant’s conversation, so to everyone else the participant stays one participant.

Kind: an object, used in responses.

Fields

Every field is present in a response; empty ones are null.

Field	Type	Description
date	datetime	When the choice was made (UTC).
participantName	string	The participant whose turn was routed.
router	VersionReference	The router that chose (the innermost one, when a router chose another router).
chosen	VersionReference	The agent that took the turn.
reason	string | null	The router’s own one-sentence reason, or why it fell back.
isFallback	boolean	True when the router’s reply could not be used (no reply, or no candidate named) and the first candidate took the turn instead.
depth	integer	How many routers chose on the way to chosen: 1 when the participant’s router chose directly.

Example

{
  "date": "2026-10-26T12:00:00.0000000Z",
  "participantName": "...",
  "router": {
    "id": "3f2b8c1e-5d4a-4e6b-9c7d-2a1b0c9d8e7f",
    "version": 0
  },
  "chosen": {
    "id": "3f2b8c1e-5d4a-4e6b-9c7d-2a1b0c9d8e7f",
    "version": 0
  },
  "reason": "...",
  "isFallback": false,
  "depth": 0
}

Where it’s used

• Inside InteractionProcess
• Inside InteractionProcessWithDetails