Bolt.new Security Checklist
Bolt.new app security checklist — check before you launch
Bolt.new builds full-stack apps from a prompt in minutes — which means the code that "just works" in preview often hides problems that only matter once real users (and bots) arrive. This checklist covers the issues we see most often in Bolt-built apps.
3 free scans every month · Your code is never stored
1. Secrets in frontend code (the #1 Bolt risk)
Because Bolt generates frontend and backend together, it frequently drops API keys straight into components.
- No API keys in components, hooks, or client-side fetch calls
- All secrets loaded from environment variables on the server side
.envis not committed if you exported to GitHub
2. Packages & dependencies
- Every imported package actually exists (AI tools sometimes invent names)
- No dependencies with known vulnerabilities
- Lockfile committed so deploys use the versions you tested
3. Authentication & data access
- Auth checks run on the server or database — not only in the browser
- If using Supabase/Firebase: access rules enabled on every table or collection
- API routes verify the user before reading or writing their data
4. Input handling
- User input is validated before reaching database queries
- User-generated content is escaped before rendering (XSS)
- File uploads restrict type and size
5. Before you deploy
- No console errors on the deployed URL
- Tested logged out — private routes actually block access
- A security scan shows no critical issues
Questions builders ask
Is Bolt.new safe for production?
Yes — once the generated code is checked. Bolt optimizes for speed and a working preview; the gaps above are common but quick to fix once identified.
How do I scan my Bolt app?
Download the project or paste files into VibeSafe — it flags exposed keys, hallucinated packages, weak auth, and runtime errors with plain-English fixes.
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