export declare class ErrorMCP extends Error {
    code: string;
    details?: any;
    constructor(message: string, code: string, details?: any);
}
export declare const errorTypes: {
    CONNECTION: string;
    VALIDATION: string;
    NOT_FOUND: string;
    INTERNAL: string;
};
export declare function formatClientError(error: unknown): {
    error: string;
    message: string;
    code: string;
};