WebhookOps for modern engineering teams

Your webhooks aren't failing. You're just not seeing them.

HookReplay isn't just a debugger — it's a production safety net. We catch failing webhooks before your customers notice, diagnose the root cause, and hand you the fix before it becomes a 3 AM outage.

15,000+ webhooks analyzed. Average time to first replay: 47 seconds.

Terminal: stripe listenfailing silently
10:42:01webhook received... no output
10:42:04retry #1... no output
10:42:07retry #2... timeout
10:42:10✗ Customer subscription stuck in incomplete
HookReplay dashboardlive capture
Captured: payment_intent.succeeded
Payload: 2.4KB JSON (view)
Replayed to localhost:3000 200 OK
Replay againEdit & replayShare
The Panic Button

We catch the fire before you smell smoke.

Most teams find out about webhook failures from angry customers. HookReplay flips the script: we detect failed replays, dead forward targets, and invalid signatures in real-time — then alert you with the diagnosis and a one-click fix.

  • Instant alert when a replay or forward target fails
  • Autopsy runs automatically — no manual debugging
  • Replay the fix before your customer notices
Production alertJust now
Replay failed: 502 Bad Gateway
Target unreachable for 3 minutes
Affected:invoice.created
Inspect nowReplay fix

What is HookReplay?

Apps talk to each other through invisible messages called webhooks — Stripe sends one when you get paid, GitHub sends one when code changes. These messages fire once and disappear. If your server misses it, the event is just... gone.

HookReplay is a smart mailbox for webhooks. It catches every message, lets you inspect exactly what arrived, and hits replay when something breaks — so a failed webhook never becomes a lost customer, a stuck order, or a 3 AM mystery.

Instant captureFull inspectOne-click replay
The real cost

When webhooks fail silently, you lose money.

One missed webhook doesn't mean one missed request. It means churned customers, broken deploys, and 3AM pages you never saw coming.

Stripe webhook missed

→ subscription stuck 'incomplete'
→ customer churns
→ $240 LTV lost
→ you never knew why
Estimated impact: $240 / customer

GitHub webhook dropped

→ CI never runs
→ broken deploy to prod
→ rollback takes 45 min
→ 3AM page
Estimated impact: ~$4,200 / incident

Twilio delivery failed

→ SMS never sent
→ 2FA user locked out
→ support ticket #4,891
→ trust erosion
Estimated impact: ∞ reputation cost

HookReplay is 6.99€/month insurance against thousand-dollar incidents.

Webhook Autopsy

Why did it fail? We tell you.

When a replay fails, HookReplay diffs the headers, detects common issues, and suggests fixes. Missing signature? Wrong content-type? Malformed JSON? You'll know in seconds.

  • Automatic header diff between original and replay
  • Content-type mismatch detection
  • Body parsing error identification
  • Signature validation with 9 algorithms
  • Suggested fix for 401, 502, and malformed responses
Autopsy Report
Replay returned 401 Unauthorized

The target expects a Stripe-Signature header. Your replay did not include it.

Content-Type mismatch detected

Original: application/json. Target response suggests it expects form-encoded data.

Payload structure is valid

JSON parsed successfully. Body matches expected Stripe event schema.

Playbook: subscription.created
Dev environment✓ Replayed 2m ago
Staging environment✓ Replayed 5m ago
Production environmentPending
Shared with Engineering team • Last updated by Jordan T.
Replay Playbooks

Save, share, and replay as a team.

Turn your most important webhooks into documented test cases. Save a webhook + its expected response as a Replay Playbook, share it with your team, and run it across dev, staging, and production.

  • Save critical webhooks as reusable test scenarios
  • Run the same event across dev/staging/prod
  • Share playbooks with your team via link
  • Build CI pipelines around verified payloads
Instant Sandbox

See it live in 30 seconds.

No signup. No friction. Send a test webhook to our public demo endpoint and watch it appear live. Pure dopamine.

bash
curl -X POST https://hookreplay.online/api/demo/webhook \
  -H "Content-Type: application/json" \
  -d '{"type":"payment_intent.succeeded"}'

Send it and watch the magic happen. No account required.

Features

The WebhookOps platform

Everything you need to observe, debug, and test webhooks — from first integration to production scale.

Panic Button Alerts

Detect failed webhooks, dead forward targets, and bad signatures before your customers notice.

Instant Endpoints

Generate a unique webhook URL in one click. No setup, no tunnels, no config files.

Real-time Streaming

Watch requests arrive live via WebSocket. Your dashboard updates the millisecond a webhook hits.

One-click Replay

Send any captured request to any target URL. Debug locally, test staging, validate production.

Webhook Autopsy

Automated failure analysis. Know why a replay failed — not just that it did.

Replay Playbooks

Save webhooks as reusable test scenarios. Share with your team. Run in CI.

Signature Verification

Verify Stripe, GitHub, Slack, Shopify, Svix, Twilio, SendGrid, and generic HMAC signatures.

Team Collaboration

Share endpoints and request history with your team. Debug together without screen-sharing.

Deep Search

Full-text search across payloads, headers, and events. Find that one webhook in seconds.

API-first

Programmatic access to hooks, requests, and replays. Automate your testing pipeline.

How it works

From zero to observable in 60 seconds

01

Create an endpoint

Sign up and get a unique webhook URL instantly. No installs, no tunnels, no credit card.

02

Point your service

Paste the URL into Stripe, GitHub, Twilio, or any provider. Send a test event and watch it arrive live.

03

Observe & Replay

Inspect every header and payload. Replay to localhost, run Autopsy on failures, save Playbooks for your team.

Pricing
Beta — Everything is free

Pay for success, not potential.

During our public beta, all features are completely free. These are the planned prices once we launch.

Free

$0

Perfect for side projects and early prototyping

  • Unlimited endpoints
  • 500 requests / month
  • 7-day retention
  • Real-time streaming
  • Basic replay
  • Webhook Autopsy
Most popular

Pro

6.99€/mo
Free during beta

For professional developers and growing products

  • Unlimited endpoints
  • 10,000 requests / month
  • 90-day retention
  • Priority support
  • Custom endpoint slugs
  • Advanced replay & overrides
  • €0.001 / request over 10K

Beta users get full Pro access at no cost. We'll notify you before billing starts.

FAQ

Questions? Answers.

Do I need to install anything?

Nope. HookReplay is entirely web-based. Create an account, generate a URL, and start receiving webhooks in seconds.

Can I replay webhooks to localhost?

For security reasons we block private IPs directly, but you can use a tunnel like ngrok and replay to your ngrok URL safely.

What providers do you support?

Any service that sends HTTP webhooks. Stripe, GitHub, Slack, Twilio, Shopify, SendGrid, Paddle, Clerk, and thousands more.

Is my data secure?

Yes. We use httpOnly cookies, bcrypt password hashing, rate limiting, and SSRF protection on replays. Your payloads are isolated per account.

What is WebhookOps?

WebhookOps is the practice of treating webhooks as first-class production events — with observability, testing, and operational rigor.

Ready to stop worrying about webhooks?

Join thousands of developers who use HookReplay to ship integrations faster, with fewer bugs, and a lot less stress.