export interface MarketplaceRegistryOptions {
    readonly fetchFn: typeof fetch;
    readonly url: string;
    readonly ttlMs: number;
    readonly now?: () => number;
}
/** Host-owned plugin registry reader with TTL caching and request coalescing. */
export declare class MarketplaceRegistry {
    #private;
    constructor(options: MarketplaceRegistryOptions);
    list(): Promise<readonly unknown[]>;
}