/**
 * Constants for the ntfy service
 */
/** Default ntfy server URL */
export declare const DEFAULT_NTFY_BASE_URL = "https://ntfy.sh";
/** HTTP subscription format endpoints */
export declare const SUBSCRIPTION_ENDPOINTS: {
    json: string;
    sse: string;
    raw: string;
    ws: string;
};
/** Default subscription options */
export declare const DEFAULT_SUBSCRIPTION_OPTIONS: {
    baseUrl: string;
    poll: boolean;
    scheduled: boolean;
};
/** Default HTTP request timeout in milliseconds */
export declare const DEFAULT_REQUEST_TIMEOUT = 30000;
/** Keepalive timeout in milliseconds (how long to wait before considering connection dead) */
export declare const KEEPALIVE_TIMEOUT = 120000;
/** Reconnect delay in milliseconds (delay before attempting to reconnect after failure) */
export declare const RECONNECT_DELAY = 5000;
/** Maximum reconnect attempts before giving up */
export declare const MAX_RECONNECT_ATTEMPTS = 5;
/** User agent string for requests */
export declare const USER_AGENT = "ntfy-mcp-server/1.0.0";
/** Error messages */
export declare const ERROR_MESSAGES: {
    INVALID_TOPIC: string;
    CONNECTION_FAILED: string;
    SUBSCRIPTION_CLOSED: string;
    PARSE_ERROR: string;
    NETWORK_ERROR: string;
    AUTHENTICATION_FAILED: string;
};