{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "description": "EXPERIMENTAL - proposed plan streaming deltas for plan items. Clients should not assume concatenated deltas match the completed plan item content.",
  "properties": {
    "delta": {
      "type": "string"
    },
    "itemId": {
      "type": "string"
    },
    "threadId": {
      "type": "string"
    },
    "turnId": {
      "type": "string"
    }
  },
  "required": [
    "delta",
    "itemId",
    "threadId",
    "turnId"
  ],
  "title": "PlanDeltaNotification",
  "type": "object"
}