Yes — exposed API keys and open endpoints are the two most common security holes in a Bolt.new-generated app, and both are fixable before you launch. A senior engineer rotates the leaked keys, moves them server-side so they never reach the browser, and adds authentication and authorization so your endpoints stop answering anonymous requests. It's a focused rescue pass, not a rewrite — usually days, not months.
Get a free security triage →Bolt.new gets you a working app fast by wiring your frontend straight to third-party APIs and a hosted backend. That speed is also where the holes come from. When the app calls an API like OpenAI, Stripe, or a data provider directly from the browser, the API key ships inside the client bundle — anyone can open devtools or view-source and read it. On the backend side, auto-generated database rules and routes often default to permissive: Row Level Security left open, endpoints that answer without checking who's asking. Neither is a flaw in your idea — it's the default shape of AI-generated code, and it's exactly what needs to change before real users (and bots) hit it.
The fix is a known checklist, not guesswork. First, rotate every key that was ever exposed — assume it's already compromised. Then move every third-party call behind a server-side proxy or serverless function so the secret lives on the server and never reaches the browser. Add authentication (verifying who the caller is) and authorization (limiting what they can touch) to every endpoint, and tighten the database policies so a logged-in user can only read their own rows. Finish with rate limiting, input validation on anything user-supplied, and spend caps plus alerts on each API provider so a future leak can't run up an unbounded bill.
Two things are worth doing today, whether or not you hire help. Rotate the exposed keys in each provider's dashboard — it takes minutes and instantly kills any key a scraper already grabbed. Then set a hard spend limit and a billing alert on every paid API (OpenAI, Stripe, cloud, SMS), so a leaked key can't quietly drain your account before launch. If your code is in a public repo, make it private and rotate anything that was ever committed. These don't fix the architecture, but they stop the bleeding while the real work gets scoped.
We start with a free triage: we read your actual code and provider settings, list every exposed secret and open endpoint, and tell you what's genuinely exploitable versus cosmetic — no upsell on things that don't matter. If you want us to do the work, it's a fixed scope agreed up front, delivered by a senior US engineer directing AI agents, which is how we move in days rather than months. We work inside your repo and your accounts, so you own the code and every key from day one and can take it in-house whenever you like. See how we build for the method.
Assume yes. Any key shipped in a browser bundle or pushed to a public repo should be treated as leaked and rotated — automated scanners routinely find keys in public repos and bundles within minutes of exposure. Rotating a key is cheap and takes a few minutes; a key someone else is quietly using is not. Rotate first, then close the hole that exposed it.
Usually. Most Bolt.new security problems are fixed by moving secrets server-side, adding auth and authorization, and tightening database rules — not by starting over. We rebuild only the parts that are genuinely unsafe and keep the rest of your app as-is. The free triage tells you upfront which is which, so you're not paying for a rewrite you don't need.
For a typical single-app rescue it's usually days, not months, and the exact scope comes out of the free triage. The quick wins — rotating keys and setting spend limits — can happen the same day. The bulk of the work is wiring authentication, moving calls to a server-side proxy, and locking down the database, which is what the fixed scope covers.
Yes. We work inside your repo and your provider accounts — Supabase, Vercel, the API vendors — so you own the code and every credential from day one. Nothing is locked to us or hosted on our accounts. You can take the project in-house or hand it to anyone else at any point.
Tell us what you need — a build, a rescue, or a contractor — and we'll come back with a clear next step.
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