import * as z from "zod/v4-mini";
import { ClosedEnum } from "../types/enums.js";
import { ResponsesNamedToolChoice, ResponsesNamedToolChoice$Outbound } from "./responses-named-tool-choice.js";
export declare const ResponsesToolChoiceEnum: {
    readonly None: "none";
    readonly Auto: "auto";
    readonly Required: "required";
};
export type ResponsesToolChoiceEnum = ClosedEnum<typeof ResponsesToolChoiceEnum>;
export type ResponsesToolChoice = ResponsesNamedToolChoice | ResponsesToolChoiceEnum;
/** @internal */
export declare const ResponsesToolChoiceEnum$outboundSchema: z.ZodMiniEnum<typeof ResponsesToolChoiceEnum>;
/** @internal */
export type ResponsesToolChoice$Outbound = ResponsesNamedToolChoice$Outbound | string;
/** @internal */
export declare const ResponsesToolChoice$outboundSchema: z.ZodMiniType<ResponsesToolChoice$Outbound, ResponsesToolChoice>;
export declare function responsesToolChoiceToJSON(responsesToolChoice: ResponsesToolChoice): string;
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