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AI code reviews — free for open-source projects

The code reviewer that takes security seriously.

A CWE-tagged review on every PR. Catches the supply-chain backdoor you'd have merged at 5pm on a Friday, plus the usual secrets and injection bugs. Free for public repos, forever.

Try for freeSign in to dashboard
  • 2-click install
  • No credit card
How it works

One install. Security review on every PR.

Step 01

Install on GitHub

One click, scoped read access to the repos you choose. No PATs, no SSH keys, no seat invitations.

Step 02

Every PR gets a security review

AI code audit alongside dependency CVE detection and verified secret scanning. Plus a short walkthrough of what changed and three pre-merge sanity checks.

Step 03

Suggested fixes inline

Findings post on the offending line with severity, a MITRE CWE link and a one-click GitHub suggestion where the patch is small. Critical findings request changes so the PR cannot auto-merge.

By the numbers

What every PR gets.

Four review surfaces, one inline thread per finding, free forever on public repos.

5
Review surfaces per PR
<30s
From push to first comment
Inline
Findings on the offending line
Free
Forever on every public repo
Pricing

Pick a tier, not a model.

Free for public repos. Pro is $19/mo for one developer. Team is pay-as-you-go — no monthly fee, unlimited users and repos.

Free
$0forever

For solo developers and OSS maintainers shipping in public.

  • Public repos only
  • Walkthrough + pre-merge checks on every PR
  • Inline security review with CWE-tagged findings
  • OSV.dev CVE detection + secret scanning
  • Up to 50 PR audits / repo / month
Try for free

Pro
$19/ month

For 1 developer working in private repos.

  • Private repos
  • Autofix PR drafts on critical findings
  • Higher-reasoning frontier model
  • Unlimited audits
  • Inline SARIF in GitHub Security tab
Try Pro

Team
Pay-as-you-gono monthly fee

For any size team. Pay only for the AI work you actually run.

  • Everything in Pro
  • Unlimited users and repos
  • Shared credit balance across all projects
  • Auto-recharge + spend cap with 24h override
  • Per-PR cost receipts (opt-in)
Start Team

Open source

Where Sebastion is already shipping.

Merged pull requests from Sebastion, our OSS code reviewer, across the projects we use and audit.

Compared to

Where Sebastion fits among the AI tools you already use.

Most AI-for-code tools help you write code faster. Sebastion is the counterweight — an autonomous reviewer that reads every PR and flags exploitable bugs before they ship.

Catch security bugs before merge.

Install Sebastion AI on your GitHub org and review your next pull request in under a minute.

Try for freeSign in to dashboard
  • 2-click install
  • No credit card