export interface StructuredError {
    code: string;
    message: string;
    step?: string;
    hint?: string;
    docsUrl?: string;
}
export declare class AgentOperationError extends Error {
    readonly code: string;
    readonly step?: string;
    readonly hint?: string;
    readonly docsUrl?: string;
    constructor(err: StructuredError);
    toStructured(): StructuredError;
}