/**
 * ToolSearch — deferred tool loading.
 *
 * Instead of sending all tool definitions every turn (~6k tokens),
 * send only the 10 most-used eagerly. The rest are "deferred" —
 * name + one-line description only. When the LLM needs one, it calls
 * ToolSearch to get the full schema, then can call the tool on that turn.
 *
 * Supports two query modes:
 *   - "select:tool1,tool2" — exact name lookup, returns full schemas
 *   - "keyword search"     — fuzzy match on name + description
 */
import type { ToolDefinition } from '../provider.js';
import type { Tool } from './index.js';
export interface DeferredToolEntry {
    name: string;
    description: string;
    definition: ToolDefinition;
}
/** Register tools that are available via ToolSearch (deferred tools). */
export declare function setDeferredRegistry(entries: DeferredToolEntry[]): void;
/** Get the current deferred registry (for introspection). */
export declare function getDeferredRegistry(): DeferredToolEntry[];
/**
 * Build the deferred tool list string for the system prompt.
 * Each entry is just name + description — no schema.
 */
export declare function buildDeferredToolList(): string;
export declare const toolSearchTool: Tool;
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