The RSI Agent for your software, site or store

Software that improves itself.
Then gets better at it.

CORA, our RSI Agent, finds what should improve, builds the next version, and learns from the result. Every week.

See what CORA would improve Watch CORA work

For online stores · restaurants · new products · serious software

Every versioncontains the last one

It gets better — then it gets better at getting better.

Every day

Your business changes every day. Your customers change every day.

What if your store, site or software improved with them — every day?

A store notices its customers now arrive from video and TikTok — and adapts to sell where they are.
A restaurant's menu adapts with AI — helping every guest find the dish they'll come back for.
A product ships the features its users are waiting for — in the next update, not next year.

You need more than a site, a store, or software. You need one that improves every day — and gets better at improving itself.

That’s Recursive Self-Improvement. That’s ZB Stack.

And it isn’t a promise — it’s written down. This is what an Improvement Record looks like:

Improvement · #2416Example

What it saw: On phones, shoppers were giving up at the payment step. Two weeks of it.
Why it happened: Payment options only appear after the form. People couldn’t tell if their card would work, so they left.
What it already knew: Stores like yours win most of those shoppers back by showing payment options first. CORA has seen this pattern before.
What it built: Payment options moved above the form. Address asked for afterwards.
How it was tested: Built away from your live store. 41 checks passed. Prices, tax and customer data untouched.
Who said yes: You did — Tuesday, 2:02pm. It’s in the record.
How it went live: One in five phone shoppers saw it first. Everyone else stayed on the old version, so the two could be compared fairly.
What happened: The new version did better. It stayed.
If it hadn’t: One click and the old version is back. That is true of every change, forever.

Every improvement is recorded this way

Prefer a real one? Read record #0001 — it happened on this site →

The RSI Agent

Meet CORA

Continuously observing. Recursively improving. Acting on what it learns.

01Observe

02Reason

03Build

04Release

05Learn

CORAEvery lap makes
the next one smarter

CORA is the intelligence inside ZB Stack. It sees how customers use your software, where they struggle, what they need next, and how the system performs.

Then CORA turns those signals into a better version—building the improvement, releasing it once you approve, measuring the result, and using what it learns to make the next version smarter.

CORA doesn’t just find what needs fixing. It builds the fix and learns from what happens next.

ObserveReasonBuildReleaseLearn

Then the loop begins again—starting with everything CORA has learned.

See exactly how CORA works →

Solutions

Where it’s already working.

Stores · where we prove it

The store that gets better at selling.

Every week, CORA finds what's costing you sales and fixes it. You see every change and what it did.

Get your free Store Growth Review →

Restaurants

The restaurant that gets better at bringing customers back.

Paste your website address. In 60 seconds, see what's turning hungry people away — and what we'd fix first.

Scan my website — free →

Prototypes

Your prototype was built fast. Now make it ready to grow.

Built something with AI? Bring it. CORA makes it solid, real, and improving every week.

Review my prototype →

New products

Build something new.

Bring an idea. We'll build it — a real product, not a demo. Improving from day one.

Start with an idea →

Running something serious? Give it its own improvement loop. Talk to us →

The platform

How improvements become software.

ZB Studio

Where your software is designed and built.

ZB Code

Where CORA writes and tests the changes.

ZB Cloud

Where it runs — fast, safe, looked after.

See the platform →

Control

You’re in charge. Always.

CORA proposes. You approve. Every change is explained in plain language before it happens and recorded after it does. Open your Improvement Record any time and read exactly what your software did, and why.

Why we exist

Software has always decayed after launch. Ours compounds.

Every piece of software starts falling behind the day it ships. The market moves, the menu changes, a new phone breaks the checkout — and the site just sits there.

For thirty years the only fix was people: agencies, retainers, developers on staff. Most businesses could never afford it. So most software decays.

That era is over. Every business on earth is getting software, and every piece of it will need an agent that improves it. That’s more than a billion agents. We build them.

Every week, CORA writes another improvement record. Every record makes it better at improving the next store, the next restaurant. What CORA learns stays with us — and compounds.

AI agents were built to do the work. RSI Agents are built to get better at it.

— ZB Stack

Read how CORA works →

What we’re learningSee all insights →