import type { LicenseState } from './types.js';
/**
 * Verify a license token
 *
 * @param token - JWT license token
 * @param publicKey - Optional custom public key (defaults to AsterMind key)
 * @returns License state after verification
 */
export declare function verifyLicenseToken(token: string | undefined, publicKey?: string): Promise<LicenseState>;
/**
 * Quick check if a token looks like a valid JWT (does not verify)
 */
export declare function isValidJWTFormat(token: string): boolean;
/**
 * Extract expiration date from a token without verification
 * Useful for quick checks
 */
export declare function getTokenExpiration(token: string): Date | null;
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