import { z } from 'zod';
import { Constants } from '@/common';
export declare const AskUserToolName = Constants.ASK_USER;
export declare const AskUserDescription: string;
export declare const AskUserStepSchema: z.ZodObject<{
    question: z.ZodString;
    options: z.ZodArray<z.ZodObject<{
        label: z.ZodString;
        value: z.ZodString;
        description: z.ZodOptional<z.ZodString>;
    }, "strip", z.ZodTypeAny, {
        value: string;
        label: string;
        description?: string | undefined;
    }, {
        value: string;
        label: string;
        description?: string | undefined;
    }>, "many">;
    type: z.ZodDefault<z.ZodEnum<["single", "multi"]>>;
}, "strip", z.ZodTypeAny, {
    type: "single" | "multi";
    options: {
        value: string;
        label: string;
        description?: string | undefined;
    }[];
    question: string;
}, {
    options: {
        value: string;
        label: string;
        description?: string | undefined;
    }[];
    question: string;
    type?: "single" | "multi" | undefined;
}>;
export type AskUserStep = z.infer<typeof AskUserStepSchema>;
/**
 * Represents a single step selection from the multi-step wizard UI.
 * Exported for use by both the host web client and browser extension.
 */
export type StepSelection = {
    values: string[];
    customInput?: string;
};
/** Field names injected into modifiedArgs by the approval flow */
export declare const HITL_FIELDS: {
    readonly SELECTIONS: "_selections";
    readonly SELECTED_OPTION: "_selectedOption";
    readonly CUSTOM_INPUT: "_customInput";
};
/**
 * Creates an ask_user tool that lets the LLM ask clarification questions mid-conversation.
 *
 * How it works:
 * 1. LLM calls ask_user(question, options) OR ask_user(steps)
 * 2. ToolNode.requiresApproval() → always true (per-tool rule in askUserRules.js)
 * 3. ToolNode.requestApproval() promotes options/question/steps to top-level fields on the event
 * 4. Frontend HumanInputPopover renders option cards + freeform text input
 * 5. User selects option(s) OR types custom input →
 *    backend resolves with modifiedArgs containing _selections, _selectedOption, or _customInput
 * 6. Tool executes, reads the user's choice, returns result to LLM
 */
export declare function createAskUserTool(): import("@langchain/core/tools").DynamicStructuredTool<z.ZodEffects<z.ZodObject<{
    question: z.ZodOptional<z.ZodString>;
    options: z.ZodOptional<z.ZodArray<z.ZodObject<{
        label: z.ZodString;
        value: z.ZodString;
        description: z.ZodOptional<z.ZodString>;
    }, "strip", z.ZodTypeAny, {
        value: string;
        label: string;
        description?: string | undefined;
    }, {
        value: string;
        label: string;
        description?: string | undefined;
    }>, "many">>;
    context: z.ZodOptional<z.ZodString>;
    steps: z.ZodOptional<z.ZodArray<z.ZodObject<{
        question: z.ZodString;
        options: z.ZodArray<z.ZodObject<{
            label: z.ZodString;
            value: z.ZodString;
            description: z.ZodOptional<z.ZodString>;
        }, "strip", z.ZodTypeAny, {
            value: string;
            label: string;
            description?: string | undefined;
        }, {
            value: string;
            label: string;
            description?: string | undefined;
        }>, "many">;
        type: z.ZodDefault<z.ZodEnum<["single", "multi"]>>;
    }, "strip", z.ZodTypeAny, {
        type: "single" | "multi";
        options: {
            value: string;
            label: string;
            description?: string | undefined;
        }[];
        question: string;
    }, {
        options: {
            value: string;
            label: string;
            description?: string | undefined;
        }[];
        question: string;
        type?: "single" | "multi" | undefined;
    }>, "many">>;
}, "passthrough", z.ZodTypeAny, z.objectOutputType<{
    question: z.ZodOptional<z.ZodString>;
    options: z.ZodOptional<z.ZodArray<z.ZodObject<{
        label: z.ZodString;
        value: z.ZodString;
        description: z.ZodOptional<z.ZodString>;
    }, "strip", z.ZodTypeAny, {
        value: string;
        label: string;
        description?: string | undefined;
    }, {
        value: string;
        label: string;
        description?: string | undefined;
    }>, "many">>;
    context: z.ZodOptional<z.ZodString>;
    steps: z.ZodOptional<z.ZodArray<z.ZodObject<{
        question: z.ZodString;
        options: z.ZodArray<z.ZodObject<{
            label: z.ZodString;
            value: z.ZodString;
            description: z.ZodOptional<z.ZodString>;
        }, "strip", z.ZodTypeAny, {
            value: string;
            label: string;
            description?: string | undefined;
        }, {
            value: string;
            label: string;
            description?: string | undefined;
        }>, "many">;
        type: z.ZodDefault<z.ZodEnum<["single", "multi"]>>;
    }, "strip", z.ZodTypeAny, {
        type: "single" | "multi";
        options: {
            value: string;
            label: string;
            description?: string | undefined;
        }[];
        question: string;
    }, {
        options: {
            value: string;
            label: string;
            description?: string | undefined;
        }[];
        question: string;
        type?: "single" | "multi" | undefined;
    }>, "many">>;
}, z.ZodTypeAny, "passthrough">, z.objectInputType<{
    question: z.ZodOptional<z.ZodString>;
    options: z.ZodOptional<z.ZodArray<z.ZodObject<{
        label: z.ZodString;
        value: z.ZodString;
        description: z.ZodOptional<z.ZodString>;
    }, "strip", z.ZodTypeAny, {
        value: string;
        label: string;
        description?: string | undefined;
    }, {
        value: string;
        label: string;
        description?: string | undefined;
    }>, "many">>;
    context: z.ZodOptional<z.ZodString>;
    steps: z.ZodOptional<z.ZodArray<z.ZodObject<{
        question: z.ZodString;
        options: z.ZodArray<z.ZodObject<{
            label: z.ZodString;
            value: z.ZodString;
            description: z.ZodOptional<z.ZodString>;
        }, "strip", z.ZodTypeAny, {
            value: string;
            label: string;
            description?: string | undefined;
        }, {
            value: string;
            label: string;
            description?: string | undefined;
        }>, "many">;
        type: z.ZodDefault<z.ZodEnum<["single", "multi"]>>;
    }, "strip", z.ZodTypeAny, {
        type: "single" | "multi";
        options: {
            value: string;
            label: string;
            description?: string | undefined;
        }[];
        question: string;
    }, {
        options: {
            value: string;
            label: string;
            description?: string | undefined;
        }[];
        question: string;
        type?: "single" | "multi" | undefined;
    }>, "many">>;
}, z.ZodTypeAny, "passthrough">>, z.objectOutputType<{
    question: z.ZodOptional<z.ZodString>;
    options: z.ZodOptional<z.ZodArray<z.ZodObject<{
        label: z.ZodString;
        value: z.ZodString;
        description: z.ZodOptional<z.ZodString>;
    }, "strip", z.ZodTypeAny, {
        value: string;
        label: string;
        description?: string | undefined;
    }, {
        value: string;
        label: string;
        description?: string | undefined;
    }>, "many">>;
    context: z.ZodOptional<z.ZodString>;
    steps: z.ZodOptional<z.ZodArray<z.ZodObject<{
        question: z.ZodString;
        options: z.ZodArray<z.ZodObject<{
            label: z.ZodString;
            value: z.ZodString;
            description: z.ZodOptional<z.ZodString>;
        }, "strip", z.ZodTypeAny, {
            value: string;
            label: string;
            description?: string | undefined;
        }, {
            value: string;
            label: string;
            description?: string | undefined;
        }>, "many">;
        type: z.ZodDefault<z.ZodEnum<["single", "multi"]>>;
    }, "strip", z.ZodTypeAny, {
        type: "single" | "multi";
        options: {
            value: string;
            label: string;
            description?: string | undefined;
        }[];
        question: string;
    }, {
        options: {
            value: string;
            label: string;
            description?: string | undefined;
        }[];
        question: string;
        type?: "single" | "multi" | undefined;
    }>, "many">>;
}, z.ZodTypeAny, "passthrough">, z.objectInputType<{
    question: z.ZodOptional<z.ZodString>;
    options: z.ZodOptional<z.ZodArray<z.ZodObject<{
        label: z.ZodString;
        value: z.ZodString;
        description: z.ZodOptional<z.ZodString>;
    }, "strip", z.ZodTypeAny, {
        value: string;
        label: string;
        description?: string | undefined;
    }, {
        value: string;
        label: string;
        description?: string | undefined;
    }>, "many">>;
    context: z.ZodOptional<z.ZodString>;
    steps: z.ZodOptional<z.ZodArray<z.ZodObject<{
        question: z.ZodString;
        options: z.ZodArray<z.ZodObject<{
            label: z.ZodString;
            value: z.ZodString;
            description: z.ZodOptional<z.ZodString>;
        }, "strip", z.ZodTypeAny, {
            value: string;
            label: string;
            description?: string | undefined;
        }, {
            value: string;
            label: string;
            description?: string | undefined;
        }>, "many">;
        type: z.ZodDefault<z.ZodEnum<["single", "multi"]>>;
    }, "strip", z.ZodTypeAny, {
        type: "single" | "multi";
        options: {
            value: string;
            label: string;
            description?: string | undefined;
        }[];
        question: string;
    }, {
        options: {
            value: string;
            label: string;
            description?: string | undefined;
        }[];
        question: string;
        type?: "single" | "multi" | undefined;
    }>, "many">>;
}, z.ZodTypeAny, "passthrough">>, z.objectOutputType<{
    question: z.ZodOptional<z.ZodString>;
    options: z.ZodOptional<z.ZodArray<z.ZodObject<{
        label: z.ZodString;
        value: z.ZodString;
        description: z.ZodOptional<z.ZodString>;
    }, "strip", z.ZodTypeAny, {
        value: string;
        label: string;
        description?: string | undefined;
    }, {
        value: string;
        label: string;
        description?: string | undefined;
    }>, "many">>;
    context: z.ZodOptional<z.ZodString>;
    steps: z.ZodOptional<z.ZodArray<z.ZodObject<{
        question: z.ZodString;
        options: z.ZodArray<z.ZodObject<{
            label: z.ZodString;
            value: z.ZodString;
            description: z.ZodOptional<z.ZodString>;
        }, "strip", z.ZodTypeAny, {
            value: string;
            label: string;
            description?: string | undefined;
        }, {
            value: string;
            label: string;
            description?: string | undefined;
        }>, "many">;
        type: z.ZodDefault<z.ZodEnum<["single", "multi"]>>;
    }, "strip", z.ZodTypeAny, {
        type: "single" | "multi";
        options: {
            value: string;
            label: string;
            description?: string | undefined;
        }[];
        question: string;
    }, {
        options: {
            value: string;
            label: string;
            description?: string | undefined;
        }[];
        question: string;
        type?: "single" | "multi" | undefined;
    }>, "many">>;
}, z.ZodTypeAny, "passthrough">, z.objectInputType<{
    question: z.ZodOptional<z.ZodString>;
    options: z.ZodOptional<z.ZodArray<z.ZodObject<{
        label: z.ZodString;
        value: z.ZodString;
        description: z.ZodOptional<z.ZodString>;
    }, "strip", z.ZodTypeAny, {
        value: string;
        label: string;
        description?: string | undefined;
    }, {
        value: string;
        label: string;
        description?: string | undefined;
    }>, "many">>;
    context: z.ZodOptional<z.ZodString>;
    steps: z.ZodOptional<z.ZodArray<z.ZodObject<{
        question: z.ZodString;
        options: z.ZodArray<z.ZodObject<{
            label: z.ZodString;
            value: z.ZodString;
            description: z.ZodOptional<z.ZodString>;
        }, "strip", z.ZodTypeAny, {
            value: string;
            label: string;
            description?: string | undefined;
        }, {
            value: string;
            label: string;
            description?: string | undefined;
        }>, "many">;
        type: z.ZodDefault<z.ZodEnum<["single", "multi"]>>;
    }, "strip", z.ZodTypeAny, {
        type: "single" | "multi";
        options: {
            value: string;
            label: string;
            description?: string | undefined;
        }[];
        question: string;
    }, {
        options: {
            value: string;
            label: string;
            description?: string | undefined;
        }[];
        question: string;
        type?: "single" | "multi" | undefined;
    }>, "many">>;
}, z.ZodTypeAny, "passthrough">, string>;