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Protocol Types

Type definitions for ARC Protocol.

Message​

interface Message {
  role: "user" | "agent";
  parts: MessagePart[];
}

MessagePart​

interface TextPart {
  type: "text";
  content: string;
}

interface ToolCallPart {
  type: "tool_call";
  toolCallId: string;
  name: string;
  parameters: Record<string, any>;
}

interface ToolResultPart {
  type: "tool_result";
  toolCallId: string;
  result: any;
}

type MessagePart = TextPart | ToolCallPart | ToolResultPart;

Task​

interface Task {
  taskId: string;
  status: "PENDING" | "IN_PROGRESS" | "COMPLETED" | "FAILED" | "CANCELLED";
  message?: Message;
}

Chat​

interface Chat {
  chatId: string;
  status: "ACTIVE" | "ENDED";
  message: Message;
}

Full Schemas​

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