IS CREATE.XYZ SAFE? SECURITY ANALYSIS | VIBEEVAL

Is Create.xyz safe? The short answer

Create.xyz the platform is safe. Apps built with Create.xyz are safe when the developer adds the layers the generator left out. The platform handles HTTPS, managed publishing, and server-side proxying of its built-in AI integrations correctly. The generated apps consistently ship with publicly callable functions, database access that isn’t scoped per user, and — for custom integrations — API keys that can land in the client bundle. Each gap is a short fix; collectively they are the difference between a demo and a production app. And uniquely for a prompt-driven builder: fixes don’t always survive regeneration, so the audit is recurring, not one-time.

The Create.xyz generation pattern

Create.xyz generates working React apps, databases, and serverless functions from natural language. The AI prioritizes “this works on first try” over “this is hardened.” That has a predictable cost:

• Functions ship open. A generated function answers any request that reaches its URL. Prompts describe features; access control has to be asked for.
• AI endpoints ship unmetered. A generated chat or image feature forwards to the model with no auth and no rate limit — free inference for anyone with the URL.
• Database queries ship unscoped. Fetch-by-ID with no ownership filter. Fine with one user, a leak with two.
• Custom integrations drift client-side. The built-in AI integrations are proxied by the platform, but a prompted-in third-party API call may be generated into a client component, key included.
• User content renders raw. Markdown and HTML rendering of user or AI output, unsanitized, is stored XSS.
• Regeneration erases fixes. Re-prompting a page can silently regenerate code without the hardening you added last week.

These are not bugs in Create.xyz; they are characteristics of AI generation under “make this work” pressure. Knowing the pattern is most of the fix — every audit item below targets one of these failure modes.

The 6 areas to harden in every Create.xyz app

1. Auth on every function

Generated functions are open endpoints. The fix is mechanical: prompt for an auth check in every function that reads or writes user data, and keep the intentionally public ones on an explicit list.

Test. Enumerate the endpoints from the app’s network traffic and call each one logged out:

curl -i https://your-app.created.app/api/getOrders
# want: 401/403 — not a JSON body full of orders

Any 200 with data from a logged-out call is a launch blocker.

2. AI endpoint protection

Functions backed by GPT, Claude, or image models are paid inference under your account. Without auth and rate limits they become a free LLM proxy for anyone who finds them — and endpoint URLs are discoverable in the client bundle.

Fix. Require a session, then meter:

• Cap requests per user per hour, tracked server-side.
• Cap input length before forwarding to the model.
• Alert on usage spikes in the model provider’s dashboard.

The manual test is simple: call the AI endpoint logged out, then script 50 rapid calls logged in. Both should fail.

3. Ownership checks (BOLA)

Auth confirms a valid session; it does not confirm the session owns the record being requested. Generated CRUD looks up by ID and returns whatever it finds — including other users’ data. This is BOLA in AI-generated CRUD, the most common finding in AI-generated apps.

Fix. Every query over user-owned data carries an ownership condition:

const order = await db.orders.findOne({ id, owner_id: user.id })
if (!order) return respond(404)

Test. Sign in as user A, copy a record ID, sign in as user B, request it. 403 or 404 passes; 200 is a BOLA.

4. Credential hygiene in the bundle

The platform’s own AI integrations keep their keys server-side. Custom integrations added via prompt are where keys leak: a generated client component calling a third-party API ships the key to every visitor.

Fix. Move every secret-key call into a serverless function; only publishable client keys (Stripe publishable, referrer-restricted Maps keys) may ship in the bundle.

Test. Run the Token Leak Checker against the published URL, or grep the downloaded bundle:

grep -rE 'sk-[A-Za-z0-9]{20,}|sk_(live|test)_|AIza[A-Za-z0-9_-]{35}' ./bundle

Rotate anything that matches — a key that appeared in the bundle is compromised regardless of how quickly you remove it.

5. Rendering user content safely

Create.xyz apps frequently render user- or AI-generated text as Markdown or HTML. Stored raw and rendered with dangerouslySetInnerHTML, one user’s crafted input runs as script in every other viewer’s browser. See LLM-rendered HTML/Markdown for the full pattern.

Fix. Sanitize at render time (DOMPurify or equivalent), keep the Markdown renderer in safe mode, and treat AI output as untrusted input — models can be steered into emitting markup.

Test. Submit <img src=x onerror=alert(1)> through every user-content field and view it from a second account.

6. Input validation and error hygiene

Generated forms validate client-side; generated functions often trust the body. And generated error handling tends to return raw error messages that map your internals for an attacker.

Fix. Schema-validate at the top of every function and return generic errors:

const Body = z.object({ name: z.string().min(1).max(120) })
const parsed = Body.safeParse(body)
if (!parsed.success) return respond(400, { error: "Invalid input" })
// ... on failure paths:
return respond(500, { error: "Internal server error" }) // log details server-side

The regeneration problem

This is the Create.xyz-specific risk worth its own section. Every fix above lives in generated code, and re-prompting a page or function regenerates that code. “Redesign the dashboard” can ship a dashboard whose data function no longer checks auth. The fix you verified last week may quietly not exist today.

Treat regeneration like a deploy:

1. Re-call previously fixed endpoints logged out — confirm the 401s still hold.
2. Re-run the two-account BOLA test.
3. Re-check the bundle for keys — a regenerated integration can move client-side.
4. Re-test AI endpoint rate limits.

A recurring automated scan is the practical answer here; manual re-testing after every prompt does not survive contact with a real development pace.

Pre-launch Create.xyz checklist

1. Every non-public function requires auth; logged-out calls return 401.
2. Every AI-backed endpoint has auth, per-user rate limits, and input length caps.
3. Every ID-keyed query checks ownership; the two-account test passes.
4. No secret keys in the deployed bundle; anything that leaked is rotated.
5. Every function validates input server-side.
6. User and AI content is sanitized before rendering as HTML/Markdown.
7. Error responses are generic; details stay in server logs.
8. Auth flows are rate-limited and don’t leak whether an email exists.
9. Run VibeEval against the published URL — and re-run after every regeneration.

Create.xyz vs Lovable vs Base44 — security positioning

• Create.xyz. Prompt-to-app with platform-proxied AI integrations. Failure modes: open functions, unmetered AI endpoints, unscoped database access, custom keys drifting into the bundle, regeneration undoing fixes.
• Lovable. Opinionated Supabase + frontend. Failure modes concentrate in RLS policies, anon keys, and BOLA.
• Base44. All-in-one with entity permissions. Failure modes concentrate in default-open entity permissions and unauthenticated functions.

Pick the tool whose failure modes you have the bandwidth to audit. For Create.xyz, that means someone who will verify auth and scoping after every prompt — the generator will not hold the line for you.

The verdict

Create.xyz produces functional AI-powered applications quickly, and its platform-proxied AI integrations are a genuinely good security default. Everything above the platform line is on you: auth on every function, rate limits on inference, ownership checks on data, keys out of the bundle, sanitized rendering — re-verified after every regeneration. The list is mechanical and scannable. Run it before launch, and after every re-prompt that touches production code.

Related resources

• How to Secure Create.xyz — step-by-step hardening guide
• Create.xyz Security Checklist — pre-launch checklist
• Vibe Code Scanner — automated scan for Create.xyz-built apps
• Token Leak Checker — find exposed API keys in your deployed app
• Vibe Coding Vulnerabilities — full vulnerability taxonomy across AI tools
• OWASP Top 10 for AI Code

Scan your Create.xyz app

Let VibeEval scan your published Create.xyz application for the open-function, BOLA, AI-endpoint-abuse, and credential-leakage patterns that AI generators most often leave in — and re-run it after every regeneration.