import type { EngineToolResultImagePart } from "./engine/types.js";
export declare const AGENT_IMAGES_FIELD = "_agentImages";
export declare const MAX_TOOL_RESULT_IMAGES = 4;
export declare const MAX_TOOL_RESULT_IMAGE_BASE64_CHARS = 2000000;
export interface NormalizedToolResultImages {
    images: EngineToolResultImagePart[];
    notes: string[];
}
export declare function normalizeToolResultImages(raw: unknown): NormalizedToolResultImages;
export declare function extractAgentImagesFromActionResult(value: unknown): {
    value: unknown;
    images: EngineToolResultImagePart[];
    notes: string[];
};
export declare function describeToolResultImages(images: EngineToolResultImagePart[]): string[];