Secure Your Site, Stay Protected.
Sentinel automatically scans your website for leaked API keys, misconfigurations, and security vulnerabilities. Launch with confidence and keep your data safe — over 12,400 teams trust us.
Free scan, no credit card required. Join 12,400+ developers.
Everything You Need for a Secure Website
Our comprehensive scanner checks for a wide range of vulnerabilities, so you can focus on building amazing things.
Credential Exposure Detection
Sentinel finds accidentally leaked API keys and credentials in your frontend code before malicious actors do. We've found 4,200+ exposed keys in the last month.
Missing Security Headers
Verifies essential HTTP security headers (CSP, XSS Protection, HSTS) to harden your site against common attacks. 68% of scanned sites are missing at least one critical header.
Public Data Exposure Scans
Identifies publicly accessible databases and cloud storage buckets that could expose sensitive data. On average, we flag 23 exposed buckets daily.
Simple & Effective
Get Secure in 3 Easy Steps
Enter Your Website URL
Simply provide the URL of the website you want to scan. No complex setup required — it takes 10 seconds.
Automated Security Scan
Our powerful engine crawls your site, analyzing code and configurations for vulnerabilities in under 60 seconds on average.
Receive Actionable Report
Get a clear, concise report detailing findings and recommendations to improve security, prioritized by severity.
See Sentinel in Action
Watch our 2-minute demo to understand how easy it is to find and fix vulnerabilities.
Product Demo Video
2 minutes · No signup required
Loved by Developers Like You
Join 12,400+ developers and startups securing their production apps.
"Sentinel is awesome for finding website vulnerabilities. It caught a leaked Stripe key in our production code that we'd missed for weeks. Go check it out, coders."
"Thanks to the creator of this tool! Now I can sleep at night knowing my website isn't secretly a bug hotel. 🐞🏨 Sentinel found a misconfigured S3 bucket we didn't know about."
"Go try this tool and secure your apps!!! Sentinel's reports were clear enough that our junior dev could fix issues without hand-holding. That saved us a full sprint."
"Thanks to Sentinel, I was able to make my app much more secure before our Series A demo. The automated reports made compliance reviews straightforward."
Simple Plans
Affordable security for everyone, from solo devs to growing teams.
Free Tier
Perfect for quick checks & personal projects.
Forever Free
- 3 Website Scans / month
- Basic Vulnerability Checks
- Summary Report
Pro Tier
For serious developers & growing businesses.
Billed monthly, cancel anytime.
- Unlimited Websites
- Continuous Monitoring
- Detailed Actionable Reports
- Priority Support (24h response)
Enterprise Tier
Tailored solutions for large organizations.
Let's talk!
- All Pro Features, plus:
- Dedicated Account Manager
- Custom Integrations
- SLA & Advanced Support
Frequently Asked Questions
Got questions? We've got answers. If you don't find what you're looking for, feel free to reach out.
Ready to Secure Your Website?
Don't let vulnerabilities spoil your website's stability. Get started with a free scan today and launch with confidence.
Secure Your Website NowFree scan, no credit card required.