Bolt.new App & Code Reviews

Senior engineers audit your Bolt.new project end-to-end — finding the token-burn bugs, env-var leaks, and security holes the AI quietly left behind. Fast turnaround, flat price, no retainers.

See pricing Start with a free scan

Bolt.new: Browser-Based Speed, Production-Grade Risk

Bolt.new is StackBlitz's AI full-stack builder — your project runs inside a WebContainer (Node.js in the browser), and Claude generates the code in real time. It's astonishingly fast at scaffolding a React/Vite app, and for prototypes it's hard to beat. The trouble starts the moment you take that project out of the browser. WebContainer pre-installs packages your export doesn't ship with, env-var prefixes don't translate, and Node version mismatches surface only when the user hits npm install.

On top of that, Bolt apps quietly burn tokens at the edges. Developers have reported spending $200 to $1,000+ in token costs debugging a single broken auth flow — the AI keeps re-generating around the bug instead of fixing it. Past roughly 15 components, the context window starts losing patterns: a guard that protected a route in iteration three disappears from the regenerated version in iteration eight, and nobody notices until production.

Why Your Bolt App Needs a Human Check

Automated scanners catch the deterministic surface — broken requests, console errors, missing validation, JS-readable tokens. That's exactly what our free scan is for, and it's a good first pass. But scanners don't read your business logic. They don't notice that a payment flow lets a user reach the confirmation page without ever charging the card, or that a Supabase RLS policy silently grants table-wide read access, or that a service-role key got baked into the client bundle during a regeneration. A human reviewer does.

We've seen Bolt apps where the preview was perfect, the demo charmed the investor, and `npm install` on a customer's laptop failed because three packages weren't in the manifest. That's the failure mode this service exists to catch.

Common Bolt.new App Problems

Across the Bolt.new projects we've audited, the same families of issues keep showing up:

  • Token-burn debug loops — single auth or layout bugs consuming millions of tokens as the AI re-generates around the problem instead of fixing it.
  • Context loss past ~15 components — the AI re-generates a component without remembering why an earlier guard existed, and the guard quietly disappears.
  • WebContainer → production mismatch — packages pre-installed in Bolt's runtime don't ship with the export; `npm install` fails locally, env-var prefixes don't translate, case-sensitive imports break on Linux servers.
  • Incomplete backend wiring — Supabase or Firebase integration is shallow; auth, RLS policies, and edge functions usually need manual finishing.
  • Hidden credentials and secrets — service-role keys baked into client bundles, API keys logged on first load, `.env` values exposed via the preview.
  • Deployment failures and blank screens — Netlify integrations breaking, larger projects deploying with regressions that didn't appear in the browser preview.
  • Inconsistent file edits and OOM crashes — the AI edits the wrong files, applies changes to the wrong component, or runs out of browser memory and loses the session entirely.

What Our Bolt.new Reviews Cover

We export your Bolt.new project code and have a senior engineer audit it top-to-bottom. The review covers:

  • Frontend code quality — component structure, accessibility, mobile behavior, error states, hydration mismatches.
  • Backend logic and APIs — endpoint correctness, error handling, retry safety, idempotency where it matters.
  • Authentication and session flow — sign-up, sign-in, OTP/password reset, token storage, session invalidation, role checks.
  • Database security — Supabase or Firebase RLS/IAM policies, edge-function permissions, public vs. authenticated queries, table-level grants.
  • Security and exposure — hardcoded secrets, exposed service-role keys, CORS, CSRF, XSS surfaces, dependency vulnerabilities.
  • Performance and load behavior — bundle size, render bottlenecks, N+1 queries, missing indexes.
  • Deployment configuration — env-var handling, build settings, headers, caching, WebContainer-to-production parity.

You get a prioritized fix list — severity-ranked, with concrete remediation steps and (where useful) ready-to-paste prompts you can take back into Bolt or Cursor.

Pricing & Next Steps

Start with the free scan — paste your Bolt.new app URL on the home page and we'll run an automated check in seconds. If the score flags anything (or if you'd like a human in the loop before launch), upgrade to a paid review:

  • Critical Review — $199. A senior engineer audits the highest-risk surfaces (auth, payments, data access, security) and writes up the must-fix items. Turnaround: 1–2 days.
  • Full App Human Review — $699–$1,349. End-to-end audit of frontend, backend, database security, and deployment. Full prioritized fix plan. Turnaround: 1–2 weeks.

Both are one-time payments. No retainers, no surprise invoices. All work happens under NDA against read-only access.

View pricing Run the free scan first
FAQ

Bolt.new Code Review — Common Questions

How is reviewing a Bolt.new app different from reviewing a regular codebase?
Bolt apps start in a WebContainer environment (browser-based Node.js) but must work in production. We check for environment mismatches, missing dependencies, hardcoded secrets, incomplete database wiring, and the pattern loss that happens when projects exceed Bolt's context window. Standard reviewers miss these AI-specific failure modes.
What are the biggest issues you find in Bolt.new apps?
Context loss causing duplicate components and disappearing logic guards, incomplete backend setup (databases, auth, RLS policies not fully wired), token-burn cycles that hide structural problems, and environment-variable or case-sensitivity breaks on export. We also catch deployment config issues and missing files that the export does not include.
Can I trust my Bolt.new app in production without a human review?
Not for production. Bolt's AI is non-deterministic and often leaves 30–40% of edge cases unhandled. Auth flows fail on password reset or token expiry, databases ship without RLS, and secrets can leak into client bundles. Every feature should be human-verified before launch.
How much will my Bolt.new app review cost and how long will it take?
A Critical Review ($199) takes 1–2 days and covers auth, data access, and security. A Full App Human Review ($699–$1,349) is 1–2 weeks and audits frontend, backend, database security, and deployment. Both include a prioritized fix list you can take back into Bolt.
Is my Bolt.new code safe during review?
Yes. We access your code under NDA via read-only Git or upload. Your Bolt.new project code remains private, and our engineers never store or reuse your IP outside the audit.