export type ToolEnvelope<T> = Record<string, unknown> & {
    readonly ok: boolean;
    readonly data?: T;
    readonly error?: string;
    readonly warnings?: readonly string[];
};
export declare function toolSuccess<T>(data: T, warnings?: readonly string[]): {
    content: {
        type: "text";
        text: string;
    }[];
    structuredContent: ToolEnvelope<T>;
};
export declare function toolFailure(error: unknown, warnings?: readonly string[]): {
    content: {
        type: "text";
        text: string;
    }[];
    structuredContent: ToolEnvelope<never>;
    isError: boolean;
};