OBY · Understand your code
See exactly what a change will break, before anyone makes it.
Real software is thousands of pieces that lean on each other, and on a large or older system nobody holds the whole picture in their head. Change one piece and others break, often the ones you would never think to check. OBY maps how everything connects, so before a single line is touched, you can see exactly what depends on it. Your team, and the AI working alongside them, move quickly without the nasty surprises.
Every AI given OBY found exactly what a change would affect
Answers that once took half a day come back in minutes
Your code stays on your own computer and is never sent away
The cheapest model with OBY beat the priciest model working blind
Why it matters
Old, important software is where the money and the risk both live.
The systems that run a business are often the oldest and least understood: the booking engine, the billing system, the platform every customer touches. They are also the riskiest to change, because no one is quite sure what else will break. So teams either move slowly and carefully, or they move fast and cause outages. OBY removes the guesswork. Ask what a change will affect, and you get a straight answer drawn from how the code actually connects, not from someone’s memory of it.
The symptoms you already know
- A fix in one place quietly breaks something three modules away.
- Nobody wants to touch the critical old system, so it never improves.
- Every estimate is a guess, because no one knows the full knock-on effect.
- New developers take months before they can change anything safely.
How it works
Three steps, and the guesswork is gone.
Map it once
Point OBY at your codebase and it builds a complete map of how every part connects, including the old code no one remembers writing.
Ask before you touch it
Before changing anything, ask a plain question: if I change this, what else is affected? Your team or your AI asks; the map answers.
Get the full picture
You get every piece that depends on it, with nothing missed, so the change goes ahead with confidence instead of crossed fingers.
What you can do with it
Four things that used to be hard, made simple.
Know what a change touches
Before you edit anything, see every part of the system that relies on it, so nothing gets broken by accident.
Find your way around fast
Drop into a system no one has touched in years and understand how it fits together in minutes, not weeks.
Give your AI the full picture
Your AI answers from how the code really connects, so it stops guessing and stops inventing things that are not there.
Spot the gaps
A missing answer is not a clean bill of health. OBY shows you where the blind spots are, so they get checked properly.
All in one pass
- Fix the bugs that were too risky to touch before.
- Close the security holes hiding in the old code.
- Speed it up where it has quietly become slow.
- Improve how it feels to use, screen by screen.
- Write the plan of works, grounded in what is really there.
Made for the systems you already run
Built to bring old, real-world projects back up to date.
This shines on the real, working systems a business already depends on, the ones with years of history that no one fully remembers, not the shiny new prototype that has nothing to understand yet. Mapping an old system is the step that makes everything else safe to do, so instead of one careful change at a time, your team can tackle the whole list at once.
The cost no one budgets for
When the person who understands your system leaves, so does the system.
On most older systems the real knowledge lives in one or two people’s heads, not in any document. When they take leave, retire, or resign, the work slows to a crawl and every change turns risky again. OBY turns that knowledge into something the whole team, and any AI, can simply ask. You are no longer one resignation away from frozen, and no longer held to ransom by the only person who knows how it all fits together.
Onboarding in days, not quarters
A new developer asks what a change affects and gets the answer at once, instead of spending months absorbing how it all works.
Key-person risk, gone
The knowledge lives in the system, not in one head, so a resignation is an inconvenience instead of a freeze.
Churn you can survive
When someone leaves, their replacement is productive in days, so turnover stops being a financial crisis.
We measured it
The cheapest AI with the map beat the most expensive AI without it.
We took a real twenty-year-old system, more than a million lines of code, and asked different AIs a simple but dangerous question: if I change this one piece, what else has to change? Working blind, the most expensive model got it wrong. Another burned through more than a million words of effort on a single question and still missed it. Given OBY, every model got it completely right, including the cheapest one, in a fraction of the work. The map does the job, so the model becomes the cheap part. The same lift held across AI from three different makers.
Why it works
A program on your machine, not a service in the middle.
Change critical software without holding your breath.
If your team is nervous about touching an old, important system, this is the tool that takes the fear out of it. Want to see it on your own code? Talk to us.