AI-Assisted Business rule extraction

The rules are
still in there. Somewhere.

Your legacy software contains years of accumulated business knowledge — rules that may no longer be documented or fully understood.
BRE extracts those rules, enables teams to validate them, and uses the confirmed inventory as an independent guardrail for both AI-assisted development and manual modernisation.

ExtractValidateGuard

See how it works Why it matters

Problem

The software still works. Nobody knows all the rules it enforces.

5–20 Years

Is the time that business-critical applications remain in use — while the teams that maintain them keep changing. Most of the people who originally built them have been replaced. Large parts may not have been touched in years.

Greenfield

Greenfield software projects are the exception in enterprise software environments. The norm is brownfield or legacy systems. The software works, but nobody fully understands all of the business rules it implements or where those rules are enforced.

AI Agents

AI Agents can change code faster than humans can review it. Independent guardrails are needed to detect unintended changes to critical business rules.

How BRE works

Extract → Validate → Guard

Extract

Discover business rules embedded in existing software and keep track of their providence.

Validate

Review, confirm, reject or assess extracted rules to establish a trusted inventory.

Guard

Detect software changes that conflict with confirmed business behaviour.

What BRE enables

Understand

Understand existing software behaviour by extracting undocumented business rules, tracing them back to source evidence, and building a validated rule inventory.

Change

Change legacy software safely, including with AI coding agents, by detecting unintended changes to confirmed business behaviour.

Test

Test confirmed business rules automatically by generating tests from validated rules and identifying gaps in existing test coverage.

Guardrail

An independent guardrail for AI-coding agents

Tests can pass while business behaviour changes. When an AI agent rewrites both the implementation and its tests, nothing pushes back — except the rules you already confirmed.

confirmed-rules

# Confirmed business rule

Rule: Orders > €50k require approval

# AI changes implementation and tests

€50k → €75k

Tests: ✓ Pass

BRE: ⚠ Confirmed business rule changed

Long-term vision

Provide the confirmed business-rule inventory directly to AI coding agents as machine-readable business context — while independently verifying that their changes preserve those rules.

Start with extraction