import type { ArkmeAiLetterPage, ArkmeAiLetterUnread } from '../types.js';
import { ServiceRuntime } from './service.js';
export declare class AiLetterService {
    private readonly runtime;
    constructor(runtime: ServiceRuntime);
    listLetters(options?: {
        periodType?: number;
        cursorStartAt?: number;
        limit?: number;
        signal?: AbortSignal;
    }): Promise<ArkmeAiLetterPage>;
    unread(signal?: AbortSignal): Promise<ArkmeAiLetterUnread>;
    markRead(letterIds: readonly string[], signal?: AbortSignal): Promise<ArkmeAiLetterUnread>;
}
//# sourceMappingURL=ai-letter-service.d.ts.map