Ship With Confidence.See Every Request, Fix Every Issue.
Never debug blind again. Capture every webhook, understand exactly what failed, and replay requests to verify your fixes. LPI gives you complete visibility into your HTTP integrations. One powerful tool, $49 once.
No credit card required • Full access for 14 days
LPI + Cloudflare Tunnel = Complete Debugging Freedom
Why choose between visibility and tunneling? Get both. Free Cloudflare Tunnel for exposure, LPI for complete visibility. No compromises.
The Ultimate Stack in 2 Minutes
Start LPI for complete visibility
./lpi --proxy 8091 --target localhost:3000Expose with Cloudflare (free, no account)
cloudflared tunnel --url http://localhost:8091Debug with complete control
See every request, replay failures, mock responses - all locally
What you get:
Why This Combo Wins
Complete Privacy
Your webhook data never touches third-party servers. Cloudflare just tunnels, LPI inspects locally.
Total Cost: $49 Once
Cloudflare Tunnel is free. LPI is one-time. Compare to $120+/year for limited SaaS tools.
No Limits
Unlimited requests, unlimited storage, unlimited replay. Your infrastructure, your rules.
Perfect For:
- Teams with compliance requirements
- Developers who value privacy
- Anyone tired of SaaS limitations
LPI Works With Everything You Already Use
Not a replacement. An enhancement. LPI adds visibility to ANY tunnel or proxy setup.
Cloudflare Tunnel
Free, reliable tunneling + LPI's complete visibility
ngrok
Keep using ngrok, add LPI for better debugging
SSH Tunnels
Your VPS tunnel + LPI's replay & mock features
LocalTunnel
LocalTunnel for exposure, LPI for inspection
Bore
Lightweight Bore tunnel + LPI's web UI
Stripe CLI
Stripe webhooks + LPI's persistent storage
The Universal HTTP Debugging Layer
LPI isn't competing with tunnels - it's the missing piece that makes ANY tunnel useful for real debugging. See what's actually happening, replay failures, mock responses. Your tunnel handles exposure, LPI handles everything else.
Features
Your Complete HTTP Infrastructure Tool
More than webhook debugging. LPI is the visibility layer for all your HTTP integrations.
Real-time Web UI
Watch webhook traffic as it happens. Understand exactly what external services send to your application.
Complete Request Visibility
See every detail: headers, body, metadata. Understand exactly why integrations succeed or fail.
Instant Replay
Verify your fixes work immediately. Replay failed webhooks to confirm your code handles them correctly.
Mock Mode
Test integrations before your backend is ready. Build webhook handlers with confidence using mock responses.
Own Your Data
Keep complete control. All webhook data stored locally, export anytime, no cloud dependencies.
WebSocket Support
Debug real-time connections with full visibility. Understand WebSocket traffic just like HTTP requests.
Smart Detection
Automatically understand any webhook format. See structured data clearly with intelligent formatting.
Production Ready
Deploy with confidence. Handles proxy headers correctly, works with your existing infrastructure.
The Complete Solution Comparison
See why professionals choose LPI + free tunnels over expensive SaaS alternatives
| Solution | Monthly Cost | Request Limits | Data Privacy | Replay | Works Offline |
|---|---|---|---|---|---|
LPI + CloudflareRECOMMENDED Complete visibility + free tunnel | $0 after $49 once | Unlimited | 100% Local | ✓ | ✓ |
ngrok Pro Tunnel + limited inspection | $10-25 | 20K/month | Cloud stored | Limited | ✗ |
Hookdeck Webhook infrastructure | $29-99 | 100K/month | Cloud stored | ✓ | ✗ |
RequestBin Request collection | $9+ | Limited | Cloud stored | ✗ | ✗ |
Free Tools mitmproxy, tcpdump, etc. | $0 | Unlimited | Local | ✗ | ✓ |
The Smart Developer's Stack
LPI ($49 once) + Cloudflare Tunnel (free) gives you everything the expensive services offer, plus complete data ownership and no recurring costs.
See It In Action
How LPI Works
Watch how easy it is to debug webhooks with LPI's interactive demo and real-world examples.
Interactive Demo
Try LPI in your browser right now
Real-World Example
Testing Stripe webhooks with LPI
3 Simple Steps
Download & Run
Single 15MB binary. No installation, no dependencies. Just run ./lpi
Point Your Webhooks
Configure your webhook provider to send requests to LPI's proxy URL instead of your server
Debug & Replay
View requests in real-time, inspect payloads, and replay failed webhooks instantly
Why $49 When Free Tools Exist?
Because professionals invest in tools that multiply their effectiveness
🆓Free Tools Give You...
- ✗Basic packet capture with complex setup
- ✗No replay capability for failed webhooks
- ✗Terminal-only output that's hard to share
- ✗Hours configuring mitmproxy or Wireshark
- ✗No persistent storage or search
💎LPI Gives You...
- ✓2-minute setup - download, run, debug
- ✓Instant replay - fix & verify immediately
- ✓Beautiful web UI - share with your team
- ✓Mock responses - test before backend exists
- ✓SQLite storage - search & export everything
The Professional's Math
2 hours
Average time debugging one webhook issue blind
$75/hour
Average developer hourly rate
20 minutes
Same issue solved with LPI
One webhook issue pays for LPI.
If LPI saves you 40 minutes of debugging, it's already free. Everything after is profit.
Join developers who value their debugging infrastructure
Try Free for 14 Days →Simple Pricing
One price. No subscriptions.
Local Proxy Inspector
Lifetime license for v1.x
Unlimited instances
No request limits
Works offline
All features included
Compare with ngrok pricing - break even in 5 months
Built for Teams with Compliance Requirements
When your webhook data can't leave your network, LPI is the only debugging solution that keeps everything local.
🏥Healthcare & HIPAA
- 100% On-Premise
No PHI ever leaves your infrastructure
- Audit Trail
Complete logs stored in local SQLite database
- No Cloud Dependencies
Works in air-gapped environments
🏦Finance & Banking
- PCI Compliant
Payment data never touches third-party services
- Zero Trust Compatible
Run within your secure perimeter
- Encrypted Storage
SQLite with encryption at rest support
Why Security Teams Choose LPI
No Data Exfiltration Risk
Unlike SaaS debugging tools, LPI never sends your data outside your network. Every request, response, and replay stays on your infrastructure.
Simple Security Review
Single 15MB Go binary with no external dependencies. No complex supply chain, no npm packages, no Docker containers to audit.
Deployment Flexibility
Run on-premise, in private cloud, or even air-gapped networks. Works wherever your compliance requirements demand.
Audit & Export
All data in standard SQLite format. Export for compliance audits, integrate with your SIEM, or archive according to retention policies.
Need volume licensing or security documentation?
Contact [email protected] →Testimonials
Loved by developers
“As someone who mucks around in the world where WordPress plugins meet the webhook interactions of the wider Web, this is a great addition to the toolset--and you've got to love how lightweight it is.”
- PeakZebra 🦓, Product Hunt
“Finally, I can see exactly what Stripe sends in production. No more guessing why webhook signatures fail.”
- SaaS Founder
“The replay feature lets me verify fixes immediately. I ship webhook integrations with confidence now.”
- Full-stack Developer
FAQ
Frequently Asked Questions
Everything you need to know about LPI
How is LPI different from ngrok?
LPI gives you complete control and ownership. Debug without internet, store data locally, no usage limits. Own your debugging infrastructure forever with a one-time $49 purchase vs ngrok's $10-15/month subscription.
What platforms does LPI support?
LPI runs on Windows, macOS, and Linux. It's a single binary with no dependencies - just download and run. We provide builds for x64 and ARM64 architectures.
Can I use LPI for production debugging?
Absolutely. LPI gives you complete visibility into production webhooks. See exactly what external services send, understand failures in real-time, and replay requests to verify fixes - all without compromising security or performance.
What's included in the $49 license?
Complete debugging freedom: unlimited instances for all your projects, capture millions of requests, debug offline, replay any webhook, mock responses. Own your debugging infrastructure forever with all v1.x updates included.
How does the webhook replay feature work?
Verify fixes instantly without waiting for webhooks to fire again. LPI captures the exact request and lets you replay it with one click. Test your error handling, validate fixes, and ship with confidence knowing your code handles real webhook data correctly.
Does LPI work with any webhook provider?
Yes! LPI works with any webhook provider including Stripe, GitHub, Shopify, PayPal, Discord, and more. It's a transparent HTTP proxy that captures all traffic regardless of the source.
What's the mock mode feature?
Build reliable webhook integrations before your backend exists. Mock mode lets you simulate any webhook scenario - test error handling, validate retry logic, and ensure your integration works perfectly from day one.
How is my data stored and secured?
All data is stored locally in SQLite on your machine. Nothing is sent to external servers. You control retention periods and can export data anytime. Your sensitive webhook data never leaves your control.
Can I run multiple instances of LPI?
Debug all your projects simultaneously. Run unlimited LPI instances, each with its own configuration and data. Perfect for managing multiple client integrations or microservices - your debugging capability scales with your needs.
Does LPI support WebSocket connections?
Yes! LPI v1.2+ includes full WebSocket support with path-based routing. You can proxy WebSocket connections alongside HTTP traffic, perfect for debugging real-time applications like chat, notifications, or live updates.
What if I need help or have issues?
Email [email protected] for help. We provide documentation, video tutorials, and respond to support requests. Many common issues are covered in our getting started guide.
Still have questions?
Contact [email protected]Ready to debug smarter?Get LPI today.
One-time purchase. Lifetime license. No recurring fees.
Get started for $49