import { z } from "zod";
import type { AgentTool } from "@kenkaiiii/gg-agent";
declare const VerifyThumbnailPromiseParams: z.ZodObject<{
    thumbnail: z.ZodString;
    video: z.ZodString;
    windowSec: z.ZodOptional<z.ZodNumber>;
    sampleCount: z.ZodOptional<z.ZodNumber>;
    detail: z.ZodOptional<z.ZodEnum<{
        low: "low";
        high: "high";
    }>>;
    model: z.ZodOptional<z.ZodString>;
}, z.core.$strip>;
/**
 * verify_thumbnail_promise — does the opening deliver on the thumbnail?
 *
 * Per MrBeast's manual: "match the clickbait expectations and
 * front-load." Thumbnails that promise X but show X at minute 8 tank
 * retention. ONE vision LLM call against thumbnail + N sampled frames.
 */
export declare function createVerifyThumbnailPromiseTool(cwd: string): AgentTool<typeof VerifyThumbnailPromiseParams>;
/**
 * Compute N sample timestamps evenly distributed across [0, windowSec].
 *  - 1 sample → [0]
 *  - 2 samples → [0, windowSec]
 *  - 3 samples → [0, windowSec/2, windowSec]
 *  - 4+ → endpoints + interior at equal stride
 *
 * Pure — exported for testing.
 */
export declare function sampleTimes(windowSec: number, n: number): number[];
export {};
//# sourceMappingURL=verify-thumbnail-promise.d.ts.map