Relay Any Webhook.
Guaranteed.
Give Cuvellis your inbound URL from Stripe, GitHub, Shopify — or any service. We guarantee reliable delivery to your endpoint, every time.
How It Works
One URL between you
and every service
Register a webhook, get a unique inbound URL, hand it to Stripe — or GitHub, Shopify, any service. Cuvellis receives every event, checks your quota, and relays it as-is to your endpoint with automatic retries.
The Problem
External services fire webhooks directly at your server. If your endpoint is slow, temporarily unreachable, or returns an error — the event is gone. Most platforms retry a handful of times then give up, leaving you with silent failures and missing data.
"A payment webhook failed at 3 AM because our server was deploying. Stripe stopped retrying. We never knew the order existed."
Cuvellis absorbs the risk
Cuvellis sits between the external service and your endpoint. It responds 202 Accepted immediately, then delivers to you with retries — up to 10 attempts over 6 hours.
- ✦202 to the caller — instantly
- ✦10 retries with exponential backoff
- ✦Original headers forwarded as-is
- ✦Failure alerts & auto-disable protection
Built-in protection
Security defaults you don't have to configure.
SSRF Protection
Every target URL is DNS-resolved and validated before delivery. Private IP ranges (RFC-1918) are blocked — bad actors cannot route requests into your internal network.
Faithful Header Forwarding
All original headers — including Stripe-Signature, X-GitHub-Event, and any custom header — are forwarded untouched. Verify the signature with your own secret, as you normally would.
Idempotency Key
Every relayed request carries an X-Request-Id header. Use it as an idempotency key on your end to safely handle the rare at-least-once duplicate delivery.
Simple, transparent plans
Start free. Scale when you need to.
Enterprise
Dedicated SLAs and support for large organizations.
Contact usWhy Cuvellis
Everything you need for reliable webhook delivery — nothing you don't.
Instant 202 Response
Cuvellis responds 202 Accepted to the external service immediately — before even attempting delivery to your endpoint. Their retry logic is never triggered.
Exponential Backoff Retries
If your endpoint is down, Cuvellis retries up to 10 times over 6 hours using exponential backoff with jitter. Permanent errors (4xx) are not retried.
50 Concurrent Workers
A PostgreSQL-backed delivery queue with 50 parallel workers. Stuck tasks are recovered every 5 minutes. High throughput with zero dropped events.
Quota Management
Monthly event quotas enforced synchronously at the inbound URL. Your plan's limits are checked before the 202 — callers receive 429 immediately when exceeded.
Failure Monitoring
Track failure counts per webhook from your dashboard. After 10 consecutive failures, the webhook is automatically disabled to prevent noise.
Universal Compatibility
Works with any service that sends webhooks — Stripe, GitHub, Shopify, Twilio, and thousands more. No special configuration required on either side.
Never miss
a webhook again.
Set up your first webhook in under a minute. No credit card required.
Get Started Free