import { HumanLayer as HumanLayerBase, ContactChannel, HumanLayerParams } from 'humanlayer';
import { CoreTool, ToolExecutionOptions } from 'ai';
import { z } from 'zod';
export declare const humanlayer: (params: HumanLayerParams) => HumanLayer;
export declare class HumanLayer {
    internal: HumanLayerBase;
    constructor(params: HumanLayerParams);
    _requireApproval(...args: any[]): (fn: Function) => Function;
    requireApproval(toolInput: {
        [key: string]: CoreTool;
    }): CoreTool<any, any> & {
        execute: (args: any, options: ToolExecutionOptions) => PromiseLike<any>;
    };
    humanAsTool(contactChannel?: ContactChannel): CoreTool<z.ZodObject<{
        message: z.ZodString;
    }, "strip", z.ZodTypeAny, {
        message: string;
    }, {
        message: string;
    }>, string> & {
        execute: (args: {
            message: string;
        }, options: ToolExecutionOptions) => PromiseLike<string>;
    };
}