/**
 * Leaper Agent – URL Safety
 * SSRF prevention: IP blocklist, private range detection, phishing check.
 */
export interface UrlSafetyResult {
    safe: boolean;
    reason?: string;
    resolved_ip?: string;
}
export declare function isPrivateIp(ip: string): boolean;
export declare function isAlwaysBlockedIp(ip: string): boolean;
export declare function allowPrivateUrls(): boolean;
export declare function isSafeUrl(urlStr: string): Promise<UrlSafetyResult>;
export declare function isSafeUrlSync(urlStr: string): UrlSafetyResult;
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