import type { Env } from "../store-interface.js";
export declare function mcpUsage(): string;
/**
 * FAIL CLOSED AT STARTUP (owner ruling 2026-09-04; hasna/apps#1720 acceptance
 * (c)). Resolve the store once through the same seam every tool call uses,
 * then release it. With no shortlinks credential resolvable and no explicit
 * local opt-in this THROWS the fail-closed message naming every credential
 * tier and the opt-in, so the bin exits non-zero before any transport starts —
 * a server whose every tool would refuse must never announce "stdio ready".
 * Hosted resolution touches nothing on disk; only the explicit local opt-in
 * opens the on-box database (announcing the local backend on stderr, once).
 */
export declare function assertMcpBackend(env?: Env): Promise<void>;