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Your AI
senior reviewer
never sleeps
BugLens reviews every pull request before your team does - catching bugs, vulnerabilities, and style violations using your own codebase as context.
$ buglens review --pr 142
Fetching diff... 847 lines changed across 12 files
Running Lens agent -> Context agent -> Review agent
[!] auth/middleware.ts:34 - SQL injection risk
// User input directly interpolated into query string
[x] api/upload.ts:89 - No file size validation
// Max 10MB enforced in docs but not in code (see RFC-22)
[ok] utils/cache.ts - Matches team caching standard
-> Posted 3 inline comments to PR #142
-> Severity score: 6.4 / 10 | Request changes: yes
$
// see it in action
What your team
actually sees
BugLens posts structured review comments directly on your pull requests — with the bug, why it matters in your codebase, and the fix.
PR #142feat: add user authentication middleware
buglens reviewed
auth/middleware.ts
31 const user = await getUser(req.headers.authorization);
32 if (!user) return res.status(401).json({ error: 'Unauthorized' });
33 const q = `SELECT * FROM sessions WHERE token = ${req.body.token}`;
34 const q = db.prepare('SELECT * FROM sessions WHERE token = ?');
35 return q.get(req.body.token);
CRITICAL
SQL injection — user input interpolated directly into query string
The token from req.body.token is concatenated into the SQL string, letting an attacker manipulate the query. Matches OWASP A03:2021 — Injection.
From your Knowledge Base: RFC-22 mandates parameterized queries for all DB access. See the team pattern in
lib/db.ts:12.// what buglens does
Catches bugs
before your team does.
BugLens runs on every pull request — AI analysis plus deterministic rules that never miss the obvious stuff.
AI-powered review
State-of-the-art AI analyses every diff for bugs, security issues, and logic errors — with inline comments posted directly on the PR.
Deterministic rules
8 hardcoded rules that run every time: hardcoded secrets, missing await, import typos, eval usage, shell injection, variable mismatches and more.
GitHub native
Install via GitHub App in 60 seconds. BugLens posts reviews as PR comments and sets a commit status — green or red — on every push.
Re-review on push
Developer pushes a fix? BugLens dismisses the old review and runs a fresh one automatically — no manual trigger needed.
Knowledge base
Write your team's conventions as Lessons. BugLens applies them to every PR — catching violations your senior devs would flag.
Review analytics
Track bug patterns, recurring violations, and code health over time. See which files get flagged most and where your team's weak spots are.
// knowledge base
BugLens learns
your rules
Write team conventions once as Lessons. BugLens applies them to every PR — catching violations your senior devs would flag, without needing them to review every diff.
0config files needed
∞rules you can teach
Your team's lessons3 active
Architecture
Never call the database directly from route handlers. Always go through the service layer in /lib/services.
Security
All user-facing file uploads must validate MIME type server-side. Do not trust the Content-Type header.
Patterns
Async functions that can fail must return a Result type. No bare try/catch at the call site.
Add a lesson...
// pricing
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Advanced context-aware AI reviews for growing teams.
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$49per seat / month
Organization-wide AI reviews for scaling engineering teams.
- Everything in Starter
- Custom AI coding standards
- Slack & Discord integrations
- Organization-wide installation
- Priority Slack support
// from the builder's log
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