import { type Static, Type } from "typebox";
import type { ExtensionAPI, ToolDefinition, ToolInfo, ToolNamespace } from "../../core/extensions/types.ts";
export declare const TOOL_SEARCH_TOOL_NAME = "tool_search";
export declare const DEFAULT_TOOL_SEARCH_LIMIT = 8;
export interface ToolSearchDocument {
    name: string;
    text: string;
}
export interface ToolSearchMatch {
    name: string;
    score: number;
}
export interface ToolRanker {
    rank(query: string, documents: readonly ToolSearchDocument[], limit: number): ToolSearchMatch[];
}
export declare function tokenize(text: string): string[];
export declare function createToolSearchDocument(tool: Pick<ToolInfo, "name" | "description" | "parameters">, namespace?: ToolNamespace): ToolSearchDocument;
export declare class Bm25Ranker implements ToolRanker {
    private readonly k1;
    private readonly b;
    constructor(options?: {
        k1?: number;
        b?: number;
    });
    rank(query: string, documents: readonly ToolSearchDocument[], limit: number): ToolSearchMatch[];
}
export declare const toolSearchSchema: Type.TObject<{
    query: Type.TString;
    limit: Type.TOptional<Type.TNumber>;
}>;
export type ToolSearchInput = Static<typeof toolSearchSchema>;
export interface ToolSearchToolDetails {
    loaded: string[];
}
export interface ToolSearchToolOptions {
    tools?: Pick<ExtensionAPI, "getAllTools" | "getActiveTools" | "setActiveTools">;
}
export declare function isToolSearchTool(tool: Pick<ToolInfo, "name" | "parameters">): boolean;
export declare function createToolSearchDescription(_sources?: readonly ToolNamespace[]): string;
export declare function createToolSearchToolDefinition(options?: ToolSearchToolOptions): ToolDefinition<typeof toolSearchSchema, ToolSearchToolDetails>;
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