
Backed by Y Combinator
Review every PRbefore it's merged.
Sentinel reviews each pull request the moment it opens and flags exploitable vulnerabilities as inline comments. Works with GitHub, GitLab, and Bitbucket Cloud.
Built by the team that secured:
Built by the team that secured:
[ how it works ]
01
Connect
Connect GitHub, GitLab, or Bitbucket Cloud and choose the repositories you want reviewed. Sentinel picks up every new pull request from there.
02
Analyze
Sentinel reads the diff, the surrounding code, and the execution paths it touches to find vulnerabilities an attacker could exploit.
03
Review
Sentinel posts each finding as an inline comment on the pull request. Developer replies feed back into future reviews and cut false positives.
[ coverage ]
Focused on the vulnerabilitiesthat matter most
Sentinel focuses on exploitable application security issues that put your systems and data at risk, not code style or best practices.
Authentication bypass
Broken access control
IDOR (Insecure Direct Object Reference)
Business logic flaws
Injection vulnerabilities
Server-Side Request Forgery (SSRF)
Leaked secrets
Unsafe handling of user input
[ why parameter ]
The signal.Not the noise.
Most tools dump every advisory in your tree and call it coverage. Parameter raises only what an attacker can reach, and ships the fix with it.
Understands your code
Sentinel follows execution paths beyond the diff to catch vulnerabilities that only appear in the context of your application.
Comments where it matters
Findings land directly on the pull request, so developers can fix issues without leaving their workflow.
Improves with every review
Feedback from your developers becomes reusable Rules that teach Sentinel your codebase and improve its next review.
[ at scale ]
Over 10,000 PRs reviewedevery day
Sentinel follows every finding from first comment to fix. Here's the last 30 days across the repositories it watches.
Resolution activity
Last 30 days
7d
30d
90d
PRs reviewed
312,940
Vulnerabilities caught
9,417
Found
Resolved
[ FAQ ]
Frequently asked questions
Start testing today.
A URL and credentials is all it takes.
First findings land within 24 hours.
















