/**
 * Copyright 2025 The Artinet Project
 * SPDX-License-Identifier: Apache-2.0
 */
/**
 * @description The protocol enum.
 */
export declare enum Protocol {
    /**
     * @description The A2A protocol.
     */
    A2A = "a2a",
    /**
     * @description The MCP protocol.
     */
    MCP = "mcp",
    /**
     * @description The ACP protocol.
     */
    ACP = "acp",
    /**
     * @description The CHAT protocol.
     */
    CHAT = "chat",
    /**
     * @description The NLWeb protocol.
     */
    NLWEB = "nlweb",
    /**
     * @description The custom protocol for user-defined services.
     */
    CUSTOM = "custom"
}