In App Messaging Api Message Summary Structure

{
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/at-and-t/refs/heads/main/json-structure/in-app-messaging-api-message-summary-structure.json",
  "description": "MessageSummary schema from AT&T API",
  "type": "object",
  "properties": {
    "messageId": {
      "type": "string",
      "description": "Unique message identifier",
      "example": "msg-500123"
    },
    "from": {
      "type": "string",
      "description": "Sender address (phone number or email)",
      "example": "tel:+12125551234"
    },
    "recipients": {
      "type": "array",
      "description": "List of recipient addresses",
      "items": {
        "type": "string"
      },
      "example": [
        "tel:+12125559999"
      ]
    },
    "isUnread": {
      "type": "boolean",
      "description": "Whether the message has been read",
      "example": false
    },
    "isIncoming": {
      "type": "boolean",
      "description": "True if message was received, false if sent",
      "example": true
    },
    "type": {
      "type": "string",
      "description": "Message type",
      "enum": [
        "TEXT",
        "MMS"
      ],
      "example": "TEXT"
    },
    "typeCode": {
      "type": "string",
      "description": "Numeric type code",
      "example": "1"
    },
    "timeStamp": {
      "type": "datetime",
      "description": "Date and time the message was sent or received",
      "example": "2026-04-19T14:30:00Z"
    }
  },
  "name": "MessageSummary"
}