import type { AgentConnectOptions, AgentConnectionLifecycle, AgentConnector } from "./connection.js";
import type { WireStream as Stream } from "./stream.js";
/**
 * Routes a client connection to a version-specific ACP agent implementation,
 * including the experimental draft ACP v2 API.
 *
 * The router consumes the first wire item, which must be an `initialize`
 * request or a single-entry batch containing one. Endpoints exposing v2 select
 * the highest configured version at or below the requested version. V1-only
 * endpoints retain the legacy fallback to v1. Only initialize params and
 * optional batch framing are normalized. Later wire items are forwarded unchanged.
 *
 * @experimental
 */
export declare class AgentProtocolRouter implements AgentConnector {
    private v1?;
    private v2?;
    /** Configures the ACP v1 agent implementation. */
    withV1(agent: AgentConnector): this;
    /**
     * Configures the experimental draft ACP v2 agent implementation.
     *
     * @experimental
     */
    withV2(agent: AgentConnector): this;
    /**
     * Routes one ACP transport connection.
     *
     * The returned `closed` always resolves once the routed connection ends,
     * including when the client leaves before `initialize` or routing fails.
     */
    connect(stream: Stream, options?: AgentConnectOptions): AgentConnectionLifecycle & {
        readonly closed: Promise<void>;
    };
    private route;
    private selectProtocol;
}
/**
 * Creates an empty agent protocol router with experimental ACP v2 support.
 *
 * @experimental
 */
export declare function agentProtocolRouter(): AgentProtocolRouter;