/**
 * The cache audit, exposed as a tool.
 *
 * Reports what the cache actually did, from the client's own transcript, and
 * attributes every invalidation it can to the file and line that caused it --
 * because a hit rate says the cache missed and cannot say why.
 *
 * Every number here is measured or absent. Where the transcript is unavailable
 * the constructs are still reported, without prices, rather than with invented
 * ones.
 */
export declare function cacheAudit(): Promise<{
    content: Array<{
        type: string;
        text: string;
    }>;
    isError?: boolean;
}>;
export declare const CACHE_TOOL: {
    readonly name: "cache_audit";
    readonly description: "Report Anthropic prompt-cache economics for this project: measured cache-read input, cache-write input, hit rate, and warm prefix size read from a Claude Code transcript, plus likely invalidation sources. Cost equivalents are labeled Anthropic-specific, excluded from universal savings, and are not invoices.";
    readonly inputSchema: {
        readonly type: "object";
        readonly properties: {};
    };
};
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