Claude Code security: scan what you build before you launch
How secure is Claude Code?
Claude Code writes and runs real code in your repo and terminal, so security depends on what lands in the repo and what you deploy. It's capable of following security instructions well, but without them it can still commit a .env, leave an endpoint unauthenticated, or scaffold a database without row-level security.
Claude Code is an agentic coding tool that builds, edits and runs code directly in your project. Because it operates on your real repo and deploys, the finished app is what matters — a pre-launch scan of the repo and live site confirms nothing slipped through.
The common risks in Claude Code apps
Committed secrets and .env files
Keys and .env files can be committed during fast iteration and persist in git history.
Unauthenticated endpoints
Generated API routes or server actions may ship without enforced auth if it wasn't specified.
Supabase RLS off
A scaffolded Supabase backend can start without row-level security on its tables.
Live-site hardening gaps
Missing security headers (CSP, HSTS) and a reachable /.env on the deployed site are easy to miss.
How to check your Claude Code app
- Verify .env is git-ignored and no secret is in the repo or its history.
- Confirm every endpoint enforces auth in code.
- Enable RLS on all Supabase tables and test logged-out access.
- Check live-site headers and that /.env and /.git are not downloadable.
Scan your Claude Code app before you launch
SafeLaunch checks your repo and live site in about 30 seconds and gives you a prompt to paste back into Claude Code to fix each finding.
Claude Code security FAQ
Is code from Claude Code secure?+–
Claude Code follows security guidance well when you give it, but a finished app should still be verified independently — committed secrets, missing auth and open databases are possible if they weren't explicitly prevented.
Does Claude Code audit my app's security?+–
It can help you write secure code and even run checks you ask for, but an independent pre-launch scan of the repo and live site is the reliable verification.
How do I scan a Claude Code project?+–
Run a SafeLaunch scan on the repo and live site to catch committed secrets, missing auth, RLS gaps and live-site issues, each with a fix prompt.