import { type Express } from "express";
interface McpExpressHostOptions {
    host?: string;
    allowedHosts?: string[];
}
/**
 * Create an Express app with the MCP SDK's host-header protection, but without
 * the SDK factory's default 100 KB JSON parser. HTTP mode installs auth and the
 * configured body parser later so large valid MCP payloads honor server config.
 */
export declare function createHarnessHttpExpressApp(options?: McpExpressHostOptions): Express;
export {};
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