Zero-Downtime Provider Cutover · Free Tool #23

Legacy Gateway Payload & Webhook Translator.

Select your existing crypto payment processor, inspect or edit a live legacy invoice payload, and instantly generate the exact XPayr REST API v1 session request plus drop-in HMAC-SHA256 webhook verification middleware.

📘 All 10 Migration Playbooks 🔐 HMAC Webhook Tester 📡 OpenAPI 3.1.0 Reference ⚡ Live Checkout Sandbox

1. Source Gateway & Legacy Payload

2. Translated XPayr v1 Payload & Savings

Annual Gateway Fee Saved $3,000 / yr
Dedicated Playbook /migrate/nowpayments →
POST https://xpayr.com/api/v1/payments 


            

                Drop-In X-XPayr-Signature Webhook Middleware
                
            

            

        

    


    

        

            FAQ
            
Questions about translating legacy payment webhooks

        

        

                            

                    
Does this translator send my API payloads or secrets to a server?

                    
Never. Every JSON parse, field mapping, and middleware code generation runs 100% client-side in your browser with zero network calls.

                

                            

                    
Why is XPayr X-XPayr-Signature safer than NOWPayments sorted JSON or Cryptomus MD5?

                    
Sorting JSON keys or base64-MD5 hashing parsed objects breaks whenever numeric precision or nested metadata changes. XPayr signs the exact raw HTTP request bytes via HMAC-SHA256, matching modern Stripe and GitHub webhook security.

                

                            

                    
How do legacy partially_paid or underpaid statuses map in XPayr?

                    
XPayr Dual Checkout evaluates configurable underpayment tolerance (default 1%, max $0.50 USD) automatically on-chain and dispatches a deterministic payment.underpaid_accepted webhook so exchange withdrawal orders never get stuck.

                

                            

                    
Where can I read the full step-by-step migration playbook for my current gateway?

                    
Open our 10 dedicated migration playbooks at /migrate — including /migrate/nowpayments, /migrate/coinbase-commerce, /migrate/bitpay, /migrate/btcpay-server, and /migrate/cryptomus.