@arcenpay/node package is the server-side SDK for ArcenPay. It provides ArcenClient for authenticated API calls, verifyWebhookSignature for webhook HMAC verification, x402Middleware for Express payment enforcement, and optional advanced services for billing automation.
Installation
Exports
Environment variables
Quick example
ArcenClient constructor
Error handling
All client methods throwArcenApiError on non-2xx responses:
Next steps
- ArcenClient reference — full client API with all methods
- Access checks — server-side entitlement enforcement
- Webhooks reference — signature verification and Express/Next.js examples

