import type { Tool } from '@wrongstack/core/types';
export interface SearchResult {
    title: string;
    url: string;
    snippet: string;
    score: number;
}
export interface CacheEntry {
    results: SearchResult[];
    source: string;
    timestamp: number;
}
export interface SearchInput {
    query: string;
    num_results?: number | undefined;
    source?: 'duckduckgo' | 'google' | 'bing' | undefined;
    skip_cache?: boolean | undefined;
}
export interface SearchOutput {
    query: string;
    results: {
        title: string;
        url: string;
        snippet: string;
    }[];
    source: string;
    truncated: boolean;
    cached: boolean;
}
export declare const searchTool: Tool<SearchInput, SearchOutput>;
/** Exposed for tests so they can reset the module-level cache between cases. */
export declare function __clearSearchCache(): void;
/** Exposed for tests so they can seed the module-level cache between cases. */
export declare function __setSearchCacheForTest(key: string, entry: CacheEntry): void;
/** Exposed for tests so they can observe module-level cache size. */
export declare function __getSearchCacheSizeForTest(): number;
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