import { z } from "zod";
import { ComfyUIClient } from "../comfyui-client.js";
export declare const checkConnectionSchema: z.ZodObject<{}, "strip", z.ZodTypeAny, {}, {}>;
export interface HealthCheckResult {
    comfyui: {
        status: "ok" | "error";
        latency_ms?: number;
        error?: string;
        version?: string;
    };
    storage: {
        status: "ok" | "error" | "not_configured";
        provider: string;
        error?: string;
    };
    gpu?: {
        name: string;
        vram_total_mb: number;
        vram_free_mb: number;
        torch_vram_total_mb?: number;
        torch_vram_free_mb?: number;
    };
    system?: {
        os: string;
        python_version?: string;
        comfyui_version?: string;
    };
}
/**
 * Check connection health to ComfyUI and storage providers.
 * Use this before expensive operations to verify system state.
 */
export declare function checkConnection(_args: z.infer<typeof checkConnectionSchema>, client: ComfyUIClient): Promise<HealthCheckResult>;
/**
 * Quick connectivity check - just verifies ComfyUI is reachable.
 * Faster than full health check for simple "is it up?" queries.
 */
export declare function pingComfyUI(client: ComfyUIClient): Promise<{
    reachable: boolean;
    latency_ms?: number;
    error?: string;
}>;