import { Server } from "@modelcontextprotocol/sdk/server/index.js";
import type { HostBridgeToolRegistry } from "./host-bridge-tools.js";
export declare const HOST_BRIDGE_MCP_SERVER_NAME = "agent-knock-knock-host-bridge";
export interface CreateHostBridgeMcpServerOptions {
    readonly registry: HostBridgeToolRegistry;
    readonly version: string;
    /** Test seam; production callers receive a fresh identity per Bridge. */
    readonly instanceId?: string;
}
/**
 * Expose the established AKK semantic tool registry over MCP.
 *
 * The low-level SDK server intentionally does not infer validation from the
 * schemas returned by tools/list, so every schema is compiled once here and
 * enforced again before any semantic tool can execute.
 */
export declare function createHostBridgeMcpServer(options: CreateHostBridgeMcpServerOptions): Server;
export declare function getHostBridgeMcpActiveCallCount(server: Server): number;
/** Preserve both JSON-RPC request-id type and value inside one Bridge. */
export declare function hostBridgeToolCallId(instanceId: string, requestId: string | number): string;
/** Wait until every already accepted MCP tool call has produced a result. */
export declare function drainHostBridgeMcpCalls(server: Server): Promise<void>;