Is Bolt.new secure?
Bolt.new ships fast. Here's what it doesn't check.
Bolt.new is safe to build with, but its output is not production-hardened by default. Most Bolt apps ship with client-exposed API keys, Supabase tables without Row Level Security, open CORS, and no security headers. Audit before launch — a free scan finds these in about 30 seconds.
Bolt.new lets you scaffold a working web app in minutes. The tradeoff: it optimizes for "running" over "hardened." Most Bolt-generated apps we audit leak at least one production credential, ship without a Content Security Policy, and trust user input that hits a database directly.
Get a graded security report for your Bolt.new app in under a minute.
Why Bolt.new apps are commonly at risk
- Default Bolt scaffolds embed API keys in client-side code instead of using server-side environment variables.
- Bolt rarely generates Row Level Security policies for Supabase tables — leaving them readable by `anon`.
- Auth flows are wired before rate limits, brute-force throttling, or password complexity rules.
- CORS is usually wide open (`*`) so any origin can call your API.
- No security headers (HSTS, CSP, X-Frame-Options) by default.
Top security risks in Bolt.new apps
Exposed API keys in JavaScript bundles
highBolt.new often inlines OpenAI, Stripe, Supabase service-role, and third-party keys directly into the client bundle. CheckVibe scans every static asset for `sk_live_*`, `sk-...`, `AIza...`, JWT-shaped tokens, and 30+ other patterns.
Supabase tables without Row Level Security
highIf RLS is off, anyone with your `anon` key (which is public by design) can read your entire `users`, `messages`, or `orders` table. CheckVibe's Supabase scanner enumerates tables and flags missing policies.
CORS misconfiguration
mediumMost Bolt apps ship with `Access-Control-Allow-Origin: *` and `Allow-Credentials: true`. That combination is invalid and indicates a misconfigured backend that can leak authenticated responses to attacker origins.
No CSP, HSTS, or frame protection
mediumWithout a Content Security Policy, a single XSS becomes a full account takeover. Without HSTS, your app is one network downgrade away from a man-in-the-middle. Without X-Frame-Options, you can be clickjacked.
SQL injection via direct query construction
highWhen Bolt generates dynamic queries, it sometimes interpolates user input directly into SQL strings. CheckVibe probes common parameters with benign payloads to detect injection without changing your data.
Debug endpoints left in production
medium`/api/debug`, `/__health__`, and Vite's `/?__inspect__` are commonly left enabled. CheckVibe enumerates 200+ debug paths to find the ones that leak environment variables, stack traces, or admin functionality.
How to fix Bolt.new security gaps
Move every key behind a server route
Anything prefixed `VITE_` is shipped to the browser. Use server-only env vars (no prefix) and proxy third-party calls through your own API.
Turn on RLS for every Supabase table
Run `ALTER TABLE x ENABLE ROW LEVEL SECURITY;` then write `auth.uid() = user_id` policies. CheckVibe links to the exact migration to run.
Lock CORS to your own origin
Replace `*` with `https://yourapp.com`. If you genuinely need cross-origin, allowlist explicit origins server-side.
Add security headers in one place
Vercel/Netlify both support `_headers` files or middleware. CheckVibe outputs ready-to-paste headers for your stack.
Schedule a weekly scan
Bolt apps change every day. Schedule recurring CheckVibe scans (daily on Pro, down to every 6 hours on Max) or trigger one from CI via the REST API on every deploy.
How do you make a Bolt.new app rank in Google and AI search?
Securing the app is half the job, the other half is making it visible. AI engines (ChatGPT, Claude, Perplexity) only cite what their crawlers can read.
Prerender — your Bolt app is invisible to AI crawlers
Bolt scaffolds Vite SPAs: the HTML crawlers receive is an empty `<div id="root">`. GPTBot, ClaudeBot, and PerplexityBot don't execute JavaScript, so they see nothing. Add prerendering (vite-plugin-prerender, Prerender.io, or migrate to SSR) so bots get full HTML.
Ship robots.txt and llms.txt
Drop both in `public/`. robots.txt should explicitly allow GPTBot, OAI-SearchBot, ClaudeBot, PerplexityBot, and Google-Extended and point at your sitemap. llms.txt gives AI engines a plain-text map of what your app does.
Add per-route titles, descriptions, and JSON-LD
A Vite SPA ships one `<title>` for every route. Use react-helmet-async (or your router's head API) for unique titles and meta descriptions, and add Organization + WebSite JSON-LD so engines resolve your app as an entity.
Verify with an AEO scan, not by hope
CheckVibe's AEO scanner fetches your site exactly like AI crawlers do and scores machine readability per engine — ChatGPT, Claude, Perplexity, Google AI, Copilot, Meta AI, Mistral. You'll see precisely which engines can read you.
Deep dives: how to rank a vibe-coded SPA in AI search · AEO for vibe-coded apps · best AEO tools compared
Bolt.new security: related guides
FAQ
Is Bolt.new safe to use for a production app?
Yes, but you need to harden the output. The scaffold is a starting point, not a production-ready app. Most security issues are at the layer Bolt doesn't touch (RLS, headers, key hygiene).
Does Bolt.new run a security check on what it builds?
No. Bolt focuses on getting code working. There's no automatic scan for exposed keys, missing RLS, or insecure headers.
What's the most common Bolt security issue?
Exposed API keys in `VITE_`-prefixed env variables. Anything with that prefix is sent to the browser and can be extracted by anyone visiting your site.
How long does a CheckVibe scan of a Bolt app take?
Under 60 seconds. We run 100+ checks in parallel and return a graded report.
Will scanning my app affect users or rate limits?
No. CheckVibe scans only public endpoints, respects robots.txt, and never modifies data. Probes are read-only and benign.