# HookSense

> Real-time webhook inspector, debugger, and replay tool for developers. Capture, inspect, and replay HTTP webhooks with sub-50ms WebSocket streaming.

## What is HookSense?

HookSense is a modern webhook testing and debugging platform built for developers. It provides instant webhook endpoints with real-time inspection, one-click replay, and HMAC signature verification. Developers use it to debug webhook integrations from services like Stripe, GitHub, Shopify, Slack, Twilio, SendGrid, and LemonSqueezy.

HookSense is a paid SaaS product with a generous free tier. No signup is required to start capturing webhooks.

## Why HookSense?

- **Sub-50ms latency**: WebSocket-powered real-time streaming, faster than polling-based alternatives
- **No signup required**: Create an endpoint and start capturing in under 1 second
- **One-click replay**: Resend any captured webhook to any target URL
- **HMAC verification**: Built-in signature verification for Stripe, GitHub, Shopify, and custom providers
- **CLI forwarding**: Forward cloud-captured webhooks to localhost via `npx @hooksense/cli listen`
- **Custom domains**: Use your own domain for webhook endpoints (e.g., webhooks.yourapp.com)
- **Request comparison**: Side-by-side diff of two webhook payloads
- **Export**: Download captured webhooks as JSON, CSV, or cURL commands
- **Monitoring & alerts**: Uptime tracking, error rate alerts, and automatic retry

## Key Features

- Real-time WebSocket streaming (sub-50ms delivery)
- Zero-click endpoint creation (no signup needed)
- One-click webhook replay to any target URL
- HMAC signature verification (Stripe, GitHub, Shopify, custom)
- Custom response codes, headers, and bodies per endpoint
- Custom domain support (CNAME-based)
- CLI tool for local webhook forwarding (`npx @hooksense/cli listen`)
- Request comparison (side-by-side diff)
- Export as cURL, JSON, or CSV
- Keyboard shortcuts (Vim-style j/k navigation)
- Browser notifications for incoming webhooks
- Search and filter by HTTP method, headers, body content
- Endpoint sharing via read-only links
- Webhook monitoring with uptime and latency metrics
- Email and webhook alerts for failures and anomalies
- Automatic retry with configurable backoff
- Webhook delivery diagnosis and error analysis
- Team collaboration with shared endpoints and roles

## Use Cases

- Debugging Stripe payment webhooks during development
- Testing GitHub webhook payloads for CI/CD pipelines
- Inspecting Shopify order notification webhooks
- Validating HMAC signatures before deploying webhook handlers
- Forwarding production-like webhooks to localhost for development
- Comparing webhook payloads before and after code changes
- Monitoring webhook endpoint health in staging/production
- Sharing webhook captures with teammates for collaborative debugging

## Pricing

- **Catch (Free)**: 1 endpoint, 100 requests/day, 7-day retention, 5 replays/month
- **Hook ($9/mo)**: 15 endpoints, 5,000 requests/day, 14-day retention, unlimited replays, custom URLs, HMAC verification, export, monitoring, alerts
- **Sense ($19/mo)**: Unlimited endpoints, 50,000 requests/day, 90-day retention, custom domains, automatic retry, diagnosis, priority support

## Supported Webhook Providers

HookSense works with any service that sends HTTP webhooks. It has built-in integration guides and auto-detection for:

- **Stripe**: checkout.session.completed, invoice.paid, payment_intent.succeeded, charge.refunded
- **GitHub**: push, pull_request, issues, release, workflow_run, deployment
- **Shopify**: orders/create, orders/paid, products/update, app/uninstalled
- **Slack**: message, app_mention, slash commands, interactive components
- **Twilio**: SMS delivery receipts, voice status callbacks
- **SendGrid**: delivery, open, click, bounce, spam report events
- **LemonSqueezy**: subscription_created, order_created, license_key_created

## How It Compares

| Feature | HookSense | Webhook.site | Hookdeck | ngrok | RequestBin | Beeceptor |
|---------|-----------|-------------|----------|-------|------------|-----------|
| Real-time streaming | WebSocket (sub-50ms) | Polling | Polling | N/A | Polling | Polling |
| No signup required | Yes | Yes | No | No | No | Yes |
| Webhook replay | Yes | Paid only | Yes | No | No | No |
| HMAC verification | Built-in | No | No | No | No | No |
| CLI forwarding | Yes | No | Yes | Yes | No | No |
| Custom domains | Yes | Paid only | Yes | Yes | No | Paid only |
| Free tier | Generous | Limited | Limited | Limited | Limited | Limited |

## Links

- Website: https://hooksense.com
- Pricing: https://hooksense.com/pricing
- Documentation: https://hooksense.com/docs
- Getting Started: https://hooksense.com/docs/getting-started
- CLI Guide: https://hooksense.com/docs/cli
- API Reference: https://hooksense.com/docs/api
- Blog: https://hooksense.com/blog
- Changelog: https://hooksense.com/changelog
- Integration Guides: https://hooksense.com/integrations
- HMAC Calculator Tool: https://hooksense.com/tools/hmac-calculator

## Comparisons

- HookSense vs Webhook.site: https://hooksense.com/compare/webhook-site
- HookSense vs Hookdeck: https://hooksense.com/compare/hookdeck
- HookSense vs WebhookDebugger: https://hooksense.com/compare/webhookdebugger
- HookSense vs ngrok: https://hooksense.com/compare/ngrok
- HookSense vs RequestBin: https://hooksense.com/compare/requestbin
- HookSense vs Beeceptor: https://hooksense.com/compare/beeceptor

## Integration Guides

- Stripe Webhooks: https://hooksense.com/integrations/stripe
- GitHub Webhooks: https://hooksense.com/integrations/github
- Shopify Webhooks: https://hooksense.com/integrations/shopify
- Twilio Webhooks: https://hooksense.com/integrations/twilio
- SendGrid Webhooks: https://hooksense.com/integrations/sendgrid
- Slack Webhooks: https://hooksense.com/integrations/slack
- LemonSqueezy Webhooks: https://hooksense.com/integrations/lemonsqueezy

## Blog

- How to Debug Stripe Webhooks in 2026: https://hooksense.com/blog/debug-stripe-webhooks
- Webhook Security Best Practices (HMAC): https://hooksense.com/blog/webhook-security-hmac-best-practices
- GitHub Webhooks Complete Guide: https://hooksense.com/blog/github-webhooks-complete-guide
- Webhook.site vs HookSense Comparison: https://hooksense.com/blog/webhook-site-vs-hooksense-comparison
- What Are Webhooks? Developer Guide: https://hooksense.com/blog/what-are-webhooks-developer-guide
- Test Stripe Webhooks Locally: https://hooksense.com/blog/test-stripe-webhooks-locally
- Best Webhook Testing Tools Compared: https://hooksense.com/blog/best-webhook-testing-tools
- Webhook.site Alternative: https://hooksense.com/blog/webhook-site-alternative

## Technical Details

- Built with Hono (backend), React 19 (frontend), PostgreSQL, Redis
- WebSocket-based real-time delivery (not polling)
- JWT authentication with httpOnly secure cookies
- GitHub OAuth login supported
- Hosted at hooksense.com