Free Tool #19 · 5 Scenarios × 8 Stacks · Zero-Placeholder Code

Multi-Language Crypto Payment & Webhook Code Generator.

Configure your checkout parameters once and export production-ready Node.js/TypeScript, Python FastAPI, PHP 8.2+, Go, Rust, Ruby, Next.js App Router, or cURL code — pre-wired for XPayr's 0.5% non-custodial API v1 and HMAC-SHA256 webhooks.

1. Configure Scenario & Stack

Deterministic Split Preview: Merchant Net = $98.5050 (99.5%) · XPayr Fee = $0.4950 (0.5%)

2. Ready-to-Run Integration Code


        

    


    

        
Code Generator FAQ

        

                            

                    Can I run the generated code directly against XPayr Testnet?
                    
Yes! Replace sk_test_your_workspace_key with the free Testnet key from your XPayr Merchant Dashboard (/merchant/register) and execute immediately with zero gas or setup cost.

                

                            

                    Does the generated webhook handler prevent timing attacks and duplicate fulfillment?
                    
Yes. Every generated webhook snippet uses constant-time HMAC-SHA256 comparison (crypto.timingSafeEqual, hmac.compare_digest, hash_equals, hmac.Equal) over the raw request body and highlights event_id idempotency.

                

                            

                    Can I share a pre-configured code snippet link with my engineering team?
                    
Yes. Every dropdown and input automatically updates your URL query parameters (?scenario=...&stack=...&amount=...&network=...) so you can paste an exact Permalink into GitHub, Linear, Slack, or Cursor.

                

                    

    


    

        
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