🌐 Multi-Chain Buyer Selection
Send one universal link (`is_multi_chain: true`) so B2B clients can pay from TRON TRC-20, Solana, Base, Arbitrum, Polygon, or Ethereum without back-and-forth wallet coordination.
Send multi-chain crypto invoices & payment links that settle in seconds.
Stop waiting 3–5 business days for cross-border SWIFT wires or losing 4.4% to PayPal international invoicing fees. Generate hosted multi-chain USDT & USDC payment links, push branded HTML invoices straight to your client's inbox, and receive 99.5% directly in your wallet.
📨 Direct HTML Email Delivery
Dispatch responsive, branded HTML invoices straight to `customer_email` with itemized order descriptions, live USD/stablecoin totals, and a 1-click checkout CTA.
⚖️ 1% Exchange Withdrawal Tolerance
Clients paying from Binance, Bybit, or OKX never get stuck on $1 network fee deductions thanks to built-in 1% (capped at $0.50 USD) automatic underpayment reconciliation.
🔁 Single-Use or 1-Year Reusable
Issue 30-minute expiring links for exact quotes or persistent 1-year reusable links (`is_reusable: true`) for agency retainers, freelancers, and B2B wholesale accounts.
🎟️ Built-In Promo Coupons
Attach discount codes to hosted invoices and validate them via dashboard controls or `xpayr_apply_payment_coupon` in `@xpayr/mcp-server (v1.0.0)`.
🤖 Instant AI Agent Creation
Ask Claude Desktop, Cursor, or your n8n workflow to generate and email client invoices in natural language via `POST https://xpayr.com/api/mcp`.
Frequently Asked Questions — Crypto Invoices & Payment Links
What is the difference between Single-Use and Reusable XPayr Payment Links?
Single-use payment links expire dynamically after 30 minutes for order-specific invoices, whereas Reusable links (is_reusable: true) remain active for up to 1 year for retainers, catalog items, and recurring client settlements.
How do Multi-Chain Agnostic Payment Links work?
When is_multi_chain is enabled, you send one universal checkout URL and your client dynamically selects their preferred blockchain (TRON TRC-20, Solana, Base, Arbitrum, Polygon, BNB Chain, or Ethereum) at payment time.
Can XPayr email the invoice directly to my client?
Yes. From the Merchant Dashboard, REST API v1 (POST /api/v1/payments), or @xpayr/mcp-server (xpayr_create_payment_session), enable send_invoice_email with customer_email to deliver a responsive HTML invoice with a 1-click Pay Now button.
Can I apply promotional discount coupons on hosted invoice links?
Yes. Merchants can configure percentage or fixed-amount checkout coupons in the dashboard or apply them programmatically via POST /api/v1/payments/{session_id}/coupon.