ChatMessageState

"""A single message in a chat session"""
type ChatMessageState {
  """Unique message identifier"""
  id: ChatMessageID!
  """Message role (user, assistant, system)"""
  role: ChatMessageRole!
  """Plain text content"""
  content: String
  """Structured custom app content (for app dev context)"""
  customAppContent: CustomAppContent
  """Tool calls made during this message (assistant messages only)"""
  toolCalls: [ChatToolCall!]
  """Input tokens used for this message (assistant messages only)"""
  inputTokens: Int
  """Output tokens generated for this message (assistant messages only)"""
  outputTokens: Int
  """Message creation timestamp (ISO8601)"""
  createdAt: ISO8601!
}