Is Bolt.new Safe?
Bolt.new is safe as a prototyping tool. It's not production-ready by default · API keys frequently end up in client bundles, security headers are usually absent, and CORS is often wide open. Fixable in an afternoon if you know what to look for.
Known risks
- API keys in client JS · Bolt.new generated apps commonly inline Stripe, OpenAI, or Firebase keys in the frontend bundle, visible to anyone.
- No security headers · CSP, X-Frame-Options, and HSTS are typically missing, leaving apps open to clickjacking and mixed-content attacks.
- Permissive CORS · Backend endpoints often ship with `Access-Control-Allow-Origin: *`, allowing any site to call your API.
How to make it safer
- Move secrets to server · Any key not meant to be public must live behind an edge function or API route, never in the client bundle.
- Add headers at the edge · Configure CSP, HSTS, and X-Frame-Options in your hosting provider (Netlify/Vercel) `_headers` file or config.
- Scan the deployed URL · SimplyScan flags all three of the above in under 30 seconds.
Frequently asked
Is Bolt.new production-ready?
For prototypes yes, for production you need to move secrets server-side and add security headers first.
What's the biggest Bolt.new risk?
Exposed API keys in the client bundle. Search your build for `sk_live`, `AKIA`, or `service_role` before shipping.
Can SimplyScan check Bolt apps?
Yes · paste the deployed URL and get results in 30 seconds.
Scan your Bolt.new app →