import { Tool } from '../tool.js';
/**
 * Schema and visibility material for catalog cache keys.
 * Name and description alone reuse a stale index when a parameter list changes.
 */
export declare function toolCacheFields(tool: Tool): {
    schema: string;
    visibility: string;
};
/**
 * Length-prefixed catalog fingerprint. Without a delimiter, ('ab','c') and ('a','bc')
 * hash to the same key and a transform can serve a stale tool list.
 */
export declare function catalogCacheKey(tools: Tool[], visibleNames: string[]): string;
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