Maya is a designer-turned-founder. She shipped 240 v0 components in two months. Then her senior engineer opened the repo: zero shared design tokens, three state libraries, four ways to fetch data, and a Vercel KV store being used as the production database. He quit in the second week. The seed lead asked, “Has anyone independent looked at this yet?”
Rescue v0 code review · Server Actions audit · Vercel KV migration · UK
v0 code review for the prototype that won’t. pass your senior’s review.
Your v0 app shipped and looked £200K-built. Now it won’t pass code review: 247 shadcn variants, three button duplicates per screen, Server Actions anyone can hit via direct POST. In 5 days, two senior engineers audit it the way a senior hire would on day one — then a fix list ranked Critical / High / Medium plus a consolidation PR that cuts 247 components to 38. £8K fixed.
24hreply, from a senior
200+projects shipped since 2019
Senioronly, on the spine
(Why founders book the v0 code review)
Your v0 codebase shipped fast. Now find out what’s missing before someone else does.
You vibe-coded an app that looks like it cost £200K. A v0 production audit tells you what your seed lead, your senior hire, or your first enterprise prospect would find when they open the repo.
0
0avg
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The founder this page is for240 components · 16 findings · 5 critical
Maya generated 240 v0 components. The app looked £200K-built. Her senior hire quit in week two.
We ran the 5-day audit. We found sixteen things. Five were critical: KV used as the prod DB at 95% capacity, no real auth boundary, secrets in client bundles, no rate limit on AI calls, and no tenant isolation. Eight medium. Three low. She had the written report on day six.
You can’t blame the tool. v0 is brilliant at generating components. It isn’t a design system, a state manager, or a database. This page is for founders who’d rather know what’s in their v0 codebase before the seed lead does.
v0 production audit · the 5-day window
5 days. Four assessments. One report.
Same shape every audit. NDA Monday morning. Written report Friday afternoon. Hourly support during the run. 8 v0 audits done since 2024 on this exact cadence.
Day 1
Security assessment
OWASP Top-10 penetration test against your live v0 app. Auth review of sessions, tokens, RLS, anon-key handling. Dependency audit. Secret scanning.
Day 2
Architecture review
Schema review of keys, indexes, multi-tenant boundaries. Data flow diagram. State management audit. Webhook reliability. Load model at 10× current traffic.
Day 3
Code quality + tests
Static analysis. Dead-code map. Test coverage report. Logging + observability audit. CI/CD pipeline review. Deploy-rollback path tested.
Day 4-5
Compliance + report
SOC-2 readiness checklist. UK GDPR data handling. DPA template + sub-processor list. 30-page report with severity-ranked fix list and effort estimates.
The security + compliance pack.
Thirty pages your enterprise prospect was about to ask for.
Thirty pages your seed lead reads on Friday and approves on Monday. Open any row.
Every category tested against your live v0 app. Pass / fail per row, with a sample attack and a remediation per failure.
Critical / High / Medium / Low. An effort estimate per fix in GBP and engineering days, so you can plan the next move.
Token expiry, refresh, RLS coverage, anon-key handling, MFA path. A dependency audit with CVE mapping. A secret-scan report covering the repo and Git history, with a rotation plan.
A plan that cuts 247 shadcn variants down to 38 reusable primitives without touching the UI. The map your senior hire can act on in week one.
Every SOC-2 control assessed with a gap list and an 8-12 week path to ready. The enterprise questionnaire becomes two hours, not two months.
A signed DPA template, a sub-processor list, a data-flow diagram, and a ROPA. The compliance evidence your first enterprise customer asks for.
A one-page architecture diagram, six suggested ADRs, and a load model showing what breaks first at 10× traffic, including the Vercel KV-to-Postgres migration.
Fourteen days to safe. 6 weeks to enterprise-ready. Twelve weeks to acquirer-ready. You pick the line that matches your next raise.
The finding. The severity.
Patterns we’ve seen across eight independent v0 audits. You can’t blame the tool. You can fix the gaps before someone else finds them.
- 01
“The whole app reads and writes from a key-value cache, not a database.”
KV is a cache, not a DB. Multi-tenant scoping is impossible. Costs spiral past £500/mo at modest scale. We map the migration to Postgres with RLS.
- 02
“Our v0 app calls OpenAI straight from the client with no per-user cap.”
One bored visitor burns the monthly budget. We move the call server-side and add a per-user rate limit before the next OpenAI bill incident lands.
- 03
“v0 generates a new component per prompt. After three months we have 240.”
240 button variants, 14 modals, 6 nav bars. The consolidation PR cuts 247 components to 38 reusable primitives without touching the UI.
- 04
“Anyone can hit a Server Action via direct POST and mutate our data.”
v0 generates them as public HTTP endpoints. No auth, no authz, no input validation by default. We gate every action and document the boundary.
- 05
“Full name, email, and billing address sit in the React state.”
Visible in browser dev tools to anyone logged in. We move sensitive reads server-side and scope them per tenant.
- 06
“Customer-list queries take 14 seconds at 5K records. At 50K they time out.”
Fine today, an outage in three months. We map the missing indexes and the query plan before scale forces the issue.
- 07
“A Stripe live key sits in plain text in a .env file inside Git history.”
Git blame says “v0”. The secret-scan report lists every credential in the repo and Git history, with a rotation plan.
- 08
“Login and signup accept unlimited requests.”
Brute force becomes possible. Anomaly detection is nonexistent. We add per-IP and per-account limits with alerting on auth anomalies.
- 09
“No unit tests. No integration tests. No e2e tests.”
Every refactor is a leap of faith. The report scopes a coverage baseline and the first Playwright suite for the critical paths.
- 10
“Our first enterprise customer asked for a security questionnaire and a DPA.”
You have neither. The deal stalls. The audit ships the SOC-2 readiness checklist, the DPA template, and the sub-processor list.
Maya’s v0 audit · UK proptech · 2025
What the audit actually moved
We found 16 issues, five critical. Maya fixed the critical five with us across a 6-week consolidation sprint. The five findings we fixed first.
24038
Components consolidated
2.4x
Planned valuation at seed
“Her senior engineer was offered the role again, accepted, and ramped in week one. The app looked £200K-built, and now the spine matched.”
001
Vercel KV migrated to Postgres
KV was the production database at 95% capacity. We moved it to Postgres with RLS so multi-tenant scoping became enforceable.
002
Server Actions gated
Anyone could hit a Server Action via direct POST and mutate data. We gated every action with auth, authz, and input validation.
003
AI calls moved server-side
OpenAI was called straight from the client with no per-user cap. We moved the call server-side and added a per-user rate limit.
004
240 components cut to 38
The consolidation PR reduced 247 shadcn variants to 38 reusable primitives without touching the UI a customer sees.
005
Tenant isolation + PII scoped
Customer PII sat in client-side React state. We moved sensitive reads server-side and scoped them per tenant.
Honest answers, real founders
The questions founders actually ask before booking the v0 code review.
100%
would refer us
Across 8 v0 audits, every codebase had at least three critical findings. The report told me what was missing, ranked by severity, with effort estimates.
What founders actually ask about the audit
Pain-first, soft-second.
The honest answer: probably not yet, and that’s normal. Across 8 v0 audits, every codebase had at least three critical findings: an auth gap, a billing race condition, a tenant-isolation hole, or a missing audit log. v0 is a brilliant builder. It’s not a security platform. The 5-day v0 code review tells you what’s missing, ranked by severity, with effort estimates.
No. Every founder we audit shipped fast with the tools that worked. We’re not judging your speed. We’re telling you what to fix before someone else finds it. The report is written for you, not against you. We’ve never named-and-shamed a client and we never will.
5 days of senior engineering attention on your codebase. An OWASP-grade pen test against your live v0 app. An architecture review. A load model at 10× current traffic. A SOC-2 readiness checklist. A UK GDPR + DPA pack. A code quality and test coverage report. A 30-page written report with severity-ranked findings, sample code per finding, and effort estimates in GBP and engineering days. You can walk away after the audit. Most founders don’t, but the option is real.
No. The audit runs against a staging copy of your codebase, with a separate environment for the penetration test. Your production stays untouched. Your customers don’t see a thing.
Yes. The report is written so your engineer can fix the findings without us. Every finding has sample code, an effort estimate, and a recommended pattern. About a third of our audited clients fix in-house, about a third use us for the critical fixes only, and about a third move to a full rebuild. All three paths are fine. You decide on day six.
For most cases, yes. The v0 production audit doubles as a diligence pack: architecture diagram, six suggested ADRs, threat model, sub-processor list, SOC-2 readiness checklist, DPA template. Seed leads have read it on Friday and approved on Monday. Enterprise customers have used it to skip 70% of their security questionnaire. Full SOC-2 certification is a separate 8-12 week paperwork phase; we hand you the path.
Yes, before anything else. NDA signed inside 30 minutes via DocuSign. Mutual NDA template ready. We only need read-only repo access for the audit, never write access. Findings are encrypted at rest, accessible only to the four engineers on your project, and destroyed 90 days after handover unless you request a longer retention.
v0 is the builder. We’re an independent auditor. The v0 code review you get from us is the one your acquirer’s CTO trusts, because it isn’t coming from the company that built the tool. v0’s own checks are useful inside the platform. Our pen test goes against your live app, the dependencies you imported, the integrations you wired in, and the deploy infrastructure you chose. Different angle, different findings.
In context
The surface you hand over.
v0 rescue, in context — the dashboards, flows and components your team actually ships, reviews and maintains.
Book the 5-day audit. NDA inside 30 minutes.
Tell us the v0 app URL, your seed timeline, and the customer you’d like to close next. Mohit replies inside 24 hours: a clear yes, a clear no, or the one question that decides it.
What happens after the email lands
- < 24h
A personal reply.
Yes, no, or the deciding question. Straight to your inbox.
- Mon
NDA + repo access.
Mutual NDA inside 30 minutes. Read-only access. The 5-day audit starts.
- Fri
The written report.
30 pages. Severity-ranked fix list. SOC-2 + DPA pack. You decide what’s next.