import type { PaywallConfig } from './types.js';
/**
 * Express middleware that gates routes behind Zcash shielded payments via x402.
 *
 * @example
 * ```typescript
 * import { zcashPaywall } from '@cipherpay/x402/express';
 *
 * app.use('/api/premium', zcashPaywall({
 *   amount: 0.001,
 *   address: 'u1abc...',
 *   apiKey: process.env.CIPHERPAY_API_KEY!,
 * }));
 * ```
 */
export declare function zcashPaywall(config: PaywallConfig): (req: any, res: any, next: any) => void;
export { zcashPaywall as default };
//# sourceMappingURL=express.d.ts.map