Bolt.new
StackBlitz's AI builder that writes, runs, and deploys full-stack web apps inside an in-browser development environment, with an optional hosted backend called Bolt Cloud.
Free tier available; paid subscription tiers with token-based consumption billing and purchasable token top-ups.
Proprietary
Appears in 1 guide
Where it ranks
Guides that include Bolt.new.
Security headers
What Bolt.new's website sends to your browser.
Scanned 2026-08-25. Grade headers F, scoring 30 out of 100.
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No Content-Security-Policy, so no defence in depth against cross-site scripting
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Strict-Transport-Security is set
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No X-Content-Type-Options, so MIME sniffing is not disabled
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No X-Frame-Options and no CSP frame-ancestors, so clickjacking is possible
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No Referrer-Policy, so full URLs may leak to third parties
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No Permissions-Policy, so powerful browser features are not restricted
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Cross-Origin-Opener-Policy is set
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No Cross-Origin-Resource-Policy
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No server-version or X-Powered-By disclosure
This is one narrow, automated check of the HTTP response headers on the vendor's own website. It says nothing about how the product itself is built, how it stores your data, or whether it has ever been audited. A good grade here is a small signal that somebody was paying attention.