Your Server Rebooted for 10 Seconds.
Stripe Just Dropped 5 Paid Orders.
When a customer pays on Stripe, Shopify, or PayFast, they send a webhook to your server. If your app is restarting, deploying code, or lagging for even 10 seconds, that payment event is dropped forever. The customer was charged, but your database never marked it paid.
Kustomcode Relay buffers webhooks in under 3ms, absorbs traffic spikes, and automatically retries with 1-click disaster recovery. 30-second drop-in setup, zero code changes required.
Instant 202 Accepted. Stripe and Shopify will never time out.
High-availability Redis queues absorb all network hiccups.
Fix server bugs and replay failed events with a single button click.
Replace 1 URL in your payment dashboard. Works with any stack.
Which Type of Developer or Business Are You?
If your revenue depends on webhooks, a 10-second server hiccup is costing you customers, chargeback fees, and trust.
Deploying to Vercel drops Stripe subscriptions during container restarts.
Every time you git push, your serverless functions restart. A customer signs up for your $49/mo plan at that exact 10-second window. The webhook returns 504 Gateway Timeout. The customer is charged, but their account remains on the "Free Plan". They send you an angry email: "Is this app a scam?"
Relay catches and buffers every single webhook in high-speed Redis. Your deployments can take as long as they want; Relay holds the payload and delivers it cleanly the millisecond your new container is healthy.
"Deploy code on Friday afternoons without sweating customer subscriptions."
Flash sales and viral TikTok spikes overwhelm your warehouse ERP.
Your influencer post goes viral. Shopify fires hundreds of orders/create webhooks at once. Your inventory database hits 100% CPU and starts dropping incoming requests. Webhooks are lost, orders never get pushed to the warehouse, and angry customers demand refunds.
Relay ingests thousands of events in under 3ms, immediately answering Shopify with a 202 Accepted so webhooks are never dropped, and smoothly meters delivery to your backend so your database never crashes.
"Handle 10,000 orders/minute during Black Friday without dropping a single sale."
Frantic Saturday night phone calls from clients whose payments failed.
A client calls you at 9 PM on Saturday: "A customer paid on PayFast, but their booking confirmation email never sent!" You have to stop your weekend, open your laptop, and spend 2 hours digging through raw Nginx and CloudWatch logs trying to find the missing payload.
Point your client’s webhook to Relay in 30 seconds. You get a visual inspector showing every JSON payload, status code, and header, plus a 1-click "Replay Event" button that re-delivers the order in 1 second.
"No more debugging raw server logs. Fix issues with a single click."
How Much Are Dropped Webhooks Costing You?
Most businesses don't realize how much revenue slips through the cracks due to 502/504 gateway timeouts and deployment restarts.
Monthly Revenue Protection Analysis
Financial exposure without a buffered webhook proxy
Orders that never reach your database
Unfulfilled customer cash
Standard $25 bank dispute fees
Protects $3,150 / mo
See How Simple It Is to Drop In
Replace your direct webhook URL with your Relay endpoint. Test what happens during a simulated server outage below.
Zero-Code Drop-In Webhook Gateway
Route your webhook traffic through Relay in under 30 seconds
15s Stripe hard timeout -> Drop Event -> Missing customer fulfillment
2.1ms 202 Accepted -> BullMQ queued -> Zero lost revenue
checkout.session.completedDirect Webhooks vs. Kustomcode Relay
Why leading engineering teams never connect payment webhooks directly to their main application servers.
5 Reasons Developers & Founders Choose Relay
Everything you need for mission-critical webhook reliability without managing AWS SQS or Redis infrastructure.
1. Zero Code Changes (30-Sec Drop-In)
You do not need to install complex SDKs or re-architect your backend. Just copy your Relay URL and paste it into Stripe, Shopify, or PayFast. It works instantly.
2. Deploy Code on Friday With Peace of Mind
Reboot servers, migrate databases, or deploy new features whenever you want. Relay safely holds all incoming payments and delivers them the second you are back online.
3. 1-Click Dead-Letter Disaster Recovery
If a bug in your code causes 100 orders to fail, don’t panic. Fix the bug, push your code, and click "Replay All" in your Relay dashboard. All 100 orders fulfill cleanly.
4. Forensic JSON Payload Inspector
Inspect raw HTTP headers, verify HMAC signatures, view formatted JSON payloads, and see exact response latencies for every single webhook that hits your app.
5. Stop Customer Chargebacks & Fraud Claims
When a customer gets charged but your app doesn’t unlock their subscription, they dispute the charge. Each dispute costs $25 + lost revenue. Relay pays for itself.
6. Universal Language & Stack Support
Works seamlessly with Next.js, Node.js, Python (Django/FastAPI), Go, Laravel, Ruby on Rails, Supabase edge functions, and AWS Lambdas.
Simple, Transparent Pricing
Pay in USD ($) or settle in South African Rand (R) via PayFast. Cancel anytime.
STARTER BUFFER
Guaranteed delivery for growing SaaS apps, Stripe subscriptions, and digital stores.
- 5 Ingress Relay Endpoints
- 100,000 Webhook Events / month
- Zero-Block Ingress (< 3ms response)
- 5 Automatic Retries (Exponential Jitter)
- 3-Day Event History & Search
- Dead-Letter Queue with 1-Click Replay
- Stripe, Shopify & PayFast Compatible
PRO RESILIENCE
High-throughput reliability for high-volume stores, marketplace platforms, and B2B SaaS.
- Unlimited Ingress Endpoints
- 1,000,000 Webhook Events / month
- Zero-Block Ingress (< 3ms response)
- 10 Automatic Retries with Custom Backoff
- 30-Day Event Forensics & Payload Logs
- Bulk 1-Click DLQ Replay Engine
- REST API for Programmatic Replays
- Priority Telegram & Email Support
ENTERPRISE DEDICATED
Dedicated Redis clusters, custom SLAs, and custom webhook security routing for high-volume enterprises.
- Dedicated Redis & Worker Cluster
- 10,000,000+ Events / month
- Sub-Millisecond Multi-Region Ingress
- Unlimited Historical Event Archiving
- Custom IP Whitelisting & Mutual TLS
- 99.999% High Availability SLA
- Direct Slack / WhatsApp Engineer SLA
Everything You Need to Know
Stop Losing Paid Orders to Server Hiccups.
Protect your Stripe, Shopify, and PayFast revenue today. Set up takes less than 30 seconds.