AI vibed it. Now make it viable.

You moved fast with AI. Smart.
Now let’s make sure you actually know what you’ve built.

Our AI Vibe Code audit gives you clarity on the security, stability, and architecture of your AI-built product, so you understand the risks under the hood before they surprise you.

Test ideas. Get users. Prove demand. Raise money earlier.

That’s brilliant.
We’re big fans of building fast.

But even the best AI tools can’t see what happens when your product meets real-world load, real users, and real complexity.

That’s where Old.St steps in, not to replace AI or rebuild your product.

But to give you a clear, honest view of what you’ve already built.

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Our Approach

AI gets you moving.
Old.St helps you see clearly.

We combine automated AI analysis with experienced engineers who know how production software actually fails, and how to spot problems early.

This isn’t about perfection.
It’s about visibility.

It’s not AI or humans.
It’s AI and humans, working together to give you clarity.

No judgement.
Just people who love building great products with you.

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Protect • Prepare • Polish

Your structured, friendly health check, built for AI coded products.

1

Protect your business

Make sure nothing puts your customers, data, or reputation at risk.

READ MORE

2

Prepare for Growth

See how ready your product is for scale, investment, or bigger customers.

READ MORE

3

Polish the Product

Assess how maintainable, readable, and handover ready your codebase really is.

READ MORE
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The Process

Typical duration: 1 week from kickoff to final call

1

Kick-off Call

30 mins

A relaxed chat to understand your product, worries, and goals.

We agree access and scope so we only look at what matters.

2

Audit

3 to 5 days

AI + human review of your codebase, database, and deployment setup. We assess your product across Protect, Prepare, Polish.

3

Report and scorecard

A clear, non-technical report that documents what we found, how serious each issue is (Red, Amber, Green), and what good practice looks like in each area.

4

Follow-Up Call

30 mins

We walk you through everything, answer questions, and help you decide what to fix now vs later.

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The Scorecard

You'll get a simple dashboard showing where you stand

🔴

Red (Critical Risk)

An issue that presents a clear and immediate risk to customers, data, revenue, or credibility.

🟠

Amber (Material Risk)

An issue that isn’t causing damage today, but is likely to cause problems as usage, complexity, or expectations increase.

🟢

Green (Low Risk)

An area that is broadly sound and not a blocker to growth or stability.

Perfect For Founders Who…

Moved fast with AI and now want to know what they actually built

Have their first real users and want to avoid security or stability surprises

Are being asked hard technical questions by investors or advisors

Plan to grow usage, customers, or complexity in the next 6 to 12 months

Value speed, but don’t want speed to turn into regret

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Hear from our clients

Old Street conducted a code audit on my app and I am ever so grateful for the thorough job that they did. Founders of software companies have a tremendous moral and legal obligation to make sure that their code keeps users safe, secure and that the functionality is robust. The Old Street team have detailed knowledge that they deployed to thoroughly vet the platform, and the report that they produced for me was comprehensive, clear and thorough.

I wholeheartedly recommend that anyone with a software platform should get their code audited by Old Street, it has been a tremendous opportunity for us to gain confidence in some areas, and deploy improvement in others.

Dan Jacobs
Founder and CEO, Buybill Ltd
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Pricing Details

Get your confidence in your product's security, scalability, maintainability

Single Focus Audit
£1,000
Includes:
Choose 1 P: Protect, Prepare, or Polish
Targeted analysis of critical areas
Traffic-light scorecard
30-min kickoff call
30-min results walkthrough
Priority recommendations
Delivered in 1 week
COMPLETE AUDIT
£1,500
Includes:
All 3 Ps: Protect + Prepare + Polish
Comprehensive security analysis
Scalability & growth readiness
Code quality & maintainability review
Traffic-light scorecard across all areas
30-min kickoff + 30-min results call
Detailed recommendations & action plan
Delivered in 1 week
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Frequently asked questions

What is a Vibe Code Audit?

A Vibe Code Audit is a structured review of a product that has been built using AI or vibe coding tools. It helps founders understand what they’ve actually built by assessing risk, robustness, and overall code quality, without changing or fixing the code.

Who is the Vibe Code Audit for?

The audit is designed for non technical founders who have used AI to build a working product and are about to get real users, customers, or investor scrutiny. If you’ve moved fast but want clarity and confidence before going further, it’s a good fit.

Do you fix or rewrite any of the code?

No. This is strictly an audit. We review, assess, and explain what we find, but we don’t make changes to your codebase or infrastructure as part of the Vibe Code Audit.

Can I rely solely on this audit for my coding?

No. The Vibe Code Audit is a high-level diagnostic, not a full line-by-line code audit or a launch-readiness guarantee. It’s designed to help non-technical founders understand what they’ve built and identify the major risks and strengths in their codebase. We focus on the big signals like structure, security posture, and maintainability, rather than every individual line of code.

Use it for clarity and confidence, not as a substitute for ongoing development or technical decision-making.

What kinds of issues does the audit look for?

We look for things like:

  • security and data handling risks
  • fragile or brittle areas that could break under real use
  • maintainability and handover concerns
  • gaps between common best practice and what’s currently implemented

All findings are explained in plain English.

Is this only for products built entirely with AI?

No. The audit works for products that are mostly AI generated, partially AI generated, or AI assisted. The key factor is uncertainty. If you didn’t fully write or design the system yourself and want clarity, the audit is relevant.

Will this tell me if my product is ready to scale?

The audit doesn’t make a “ready to scale” judgement. Instead, it shows you what’s solid, what’s fragile, and what risks exist today, so you can decide if and when scaling makes sense.

How technical is the report?

The report is written for non technical founders.

There’s no jargon, no assumption of engineering knowledge, and no expectation that you need to “translate” the findings. Everything is explained in clear, practical language.

How long does a Vibe Code Audit take?

Most audits take around one week from kickoff call to final walkthrough. The exact timing depends on the size and complexity of the product, but the goal is to deliver clarity quickly.

Will this help with investor or advisor questions?

Yes. Founders often use the audit to better answer questions about technical risk, security, and maintainability when speaking to investors, advisors, or early hires. It helps replace vague answers with informed ones.

What do I get at the end of the audit?

You’ll receive a clear report and scorecard showing:

  • what issues were found
  • how serious each issue is (Red, Amber, Green)
  • how your product compares to common best practice

You’ll also get a walkthrough call so you fully understand the findings.

This is a beta service and it is provided as-is without any warranty as to accuracy or suitability for any purpose.

Sign Up Today

Get a special promo for being among the first to get a 3P Vibe Code Audit

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Drop us a line

Let's have a chat

+44 (0)20 3576 2169

Old.st Labs

13 Devonshire Gardens,
London, W4 3TN