/** The uniform JSON body crtrd returns on any non-2xx response. */
export interface ErrorBody {
    error: {
        code: string;
        message: string;
        details?: unknown;
    };
}
/** Thrown by `CrtrClient` on a non-2xx response (or a synthesized transport
 *  failure such as an unreachable daemon). Carries the HTTP status, the stable
 *  machine `code` from the `ErrorBody`, and optional structured `details`. */
export declare class APIError extends Error {
    readonly status: number;
    readonly code: string;
    readonly details?: unknown;
    readonly headers: Headers;
    constructor(status: number, code: string, message: string, details?: unknown, headers?: HeadersInit);
}
/** @deprecated Use APIError. Kept as the in-repo compatibility alias. */
export { APIError as ApiError };
/** A local API transport failure has stable status/code identity, independent
 * of message prose. */
export declare function isDaemonTransportApiError(error: unknown): error is APIError;
/** Type guard for an `ErrorBody`-shaped parsed payload. */
export declare function isErrorBody(value: unknown): value is ErrorBody;