/** Formatted error detail returned by Layer 2 (safe) methods. */
export interface FormattedError {
    code: string;
    message: string;
    hint: string;
    retryable: boolean;
    retryAfterMs?: number;
    requestId?: string;
}
/**
 * Discriminated union returned by every safe-layer method.
 * TypeScript narrows data/error automatically after the success check.
 *
 * @example
 * const result = await client.safe.askWithTools(params);
 * if (result.success) console.log(result.data.outputText);
 * else console.error(result.error.hint);
 */
export type SdkResult<T> = {
    success: true;
    data: T;
    error: null;
} | {
    success: false;
    data: null;
    error: FormattedError;
};
export declare function ok<T>(data: T): SdkResult<T>;
export declare function fail(error: FormattedError): SdkResult<never>;
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