export declare function jsonResult(value: unknown): {
    content: {
        type: "text";
        text: string;
    }[];
    structuredContent: Record<string, unknown>;
};
export declare function errorMessage(error: unknown): string;
export declare function run(operation: () => Promise<unknown>): Promise<{
    content: {
        type: "text";
        text: string;
    }[];
    structuredContent: Record<string, unknown>;
} | {
    content: {
        type: "text";
        text: string;
    }[];
    isError: boolean;
}>;