import { z } from "zod";
/**
 * Stratified URL sampler. Two modes:
 *   - No `template`: stratified sample across all template clusters in `urls`,
 *     proportional to sqrt(cluster size). Good for "give me N representative
 *     URLs from this entire sitemap."
 *   - With `template`: restrict to URLs matching the named template, then
 *     simple random sample of size `n`. Good for "give me 5 examples from the
 *     /city/ template specifically."
 */
export declare const sampleTemplateTool: {
    name: string;
    description: string;
    inputSchema: z.ZodType<{
        urls: string[];
        n: number;
        template?: string | undefined;
    }, unknown, z.core.$ZodTypeInternals<{
        urls: string[];
        n: number;
        template?: string | undefined;
    }, unknown>>;
    outputSchema: z.ZodType<{
        sample: string[];
        sampledFrom: number;
        template: null;
    } | {
        sample: string[];
        sampledFrom: number;
        template: string;
    }, unknown, z.core.$ZodTypeInternals<{
        sample: string[];
        sampledFrom: number;
        template: null;
    } | {
        sample: string[];
        sampledFrom: number;
        template: string;
    }, unknown>>;
    toAiTool(): import("ai").Tool<{
        urls: string[];
        n: number;
        template?: string | undefined;
    }, import("./types.js").ToolResult<{
        sample: string[];
        sampledFrom: number;
        template: null;
    } | {
        sample: string[];
        sampledFrom: number;
        template: string;
    }>>;
    run(input: {
        urls: string[];
        n: number;
        template?: string | undefined;
    }, ctx?: import("./types.js").ToolExecuteContext): Promise<import("./types.js").ToolResult<{
        sample: string[];
        sampledFrom: number;
        template: null;
    } | {
        sample: string[];
        sampledFrom: number;
        template: string;
    }>>;
};
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