System-Intelligence for financial core systems.

Know your core, evolve it without fear.

You can't replace 40 years of business logic -
and you shouldn't have to.

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0%
Time saved
On system-analyst SDLC tasks - feature design, reverse-engineering, incident resolution
0 weeks
Time to Value
Pilot to first answer you can trust
0
Analyzed daily
Non-trivial code dependencies, and counting

Give your agentic workflows the super-powers they've been missing.

Map every program, data flow, and business process into one deterministic blueprint

The Deterministic Layer

Static analysis maps every program, file, and dependency into a trusted graph.

RAW · technical labels
SessionsBilling Engine - Dependency Tracev1
What does the Billing Engine depend on?
CBBILL01.cbl
1/3
·Thought for 4s10:27 AM
Direct dependencies

Ask a follow-up question…
The Semantic Layer

Layers business meaning over the graph so engineers and AI share one language.

SEMANTIC · business meaning
SessionsBilling Engine - Dependency Tracev1
What does the Billing Engine depend on?
CBBILL01.cbl
1/3
·Thought for 4s10:27 AM
Direct dependencies

Ask a follow-up question…
The Agentic Layer

Grounds AI agents in verified context to change legacy systems safely and fast.

AGENTIC · grounded answers
SessionsBilling Engine - Dependency Tracev1
What does the Billing Engine depend on?
CBBILL01.cbl
1/3
·Thought for 4s10:27 AM
Direct dependencies

The Billing Engine is one program inside the Billing System. It reads from Customer Data each cycle and runs as part of the Bill Payment Flow, so any change to its outputs ripples through the flow and every downstream consumer of that data.

Ask a follow-up question…

Why not just Copilot or Claude Code?

Your coding agents -
great agents, finally grounded.

On a 40-year-old core, AI agents guess. Tweezr is the verified, system-level map they stand on - the ground truth Copilot and Claude Code consume.

One verified map - fed to every agent you already use

Claude Code
Anthropic
OpenAI Codex
ChatGPT
Antigravity
Google
GitHub Copilot
Microsoft
Amazon Q Developer
Amazon Q Developer
AWS

AI agents alone

Probabilistic. Plausible. Unanchored.

Confident, fluent - and wrong, with nothing underneath to catch it.

AI agents on Tweezr

The same agents - on solid ground.

The same agent, reading from one verified map - answers it can prove.

We don't guess.We determine.

The logical first step to any evolution roadmap

Three roads, every one starting blind - and the one capability underneath them all.

The roads you’re told to choose between

Stay as-is

Locked in. Delivery slows, risk compounds, and the know-how walks out the door.

Timeline
Falling behind
Risk
Knowledge erosion
Cost
Compounding

Wrap & Extend

New layers on top - complexity compounds over a core that never leaves.

Timeline
~12 months
Risk
Unmaintainable core
Cost
High

Rip & Replace

A clean slate, sold as a multi-year, big-bang gamble.

Timeline
2 - 8 years
Risk
"Big bang" failure
Cost
Very high
The capability underneath all three

One engine, any path

Tweezr isn't a third road - it's the ground beneath all of them. Decode the core first, then evolve it your way. Predictable, evidence-backed, low-risk.

Timeline
Weeks, not months
Risk
Minimal risk
Cost
Predictable

See ROI on your legacy systems in days, not months.

<30 minutes

to onboard a developer via natural language interface

Zero

customer data/PII exposure - nothing leaves the bank's landing zone

<45 min vs. weeks

for process archeology that used to take weeks

<10 minutes

to identify root cause of incidents

1 - 4 weeks

On-prem deployment

What clients say

Trusted by teams who can't afford to guess

They didn't put any commentary into the code, and now they're gone. We don't know what it does anymore.
Transformation lead
Global Tier-1 bank
What took a systems analyst 3 hours now takes 3 minutes.
Mainframe developer
Major Israeli bank
Core migration anxiety is one of the biggest barriers to transformation, particularly when leaders lack certainty about how legacy systems will behave during change. Tweezr's deterministic insight helps remove that uncertainty, giving banks greater confidence and control on the path to migration.
Antony Jenkins CBE
Founder and CEO · 10x Banking
Tweezr won 'Best of Show' at FinovateEurope for the second year running - recognized for helping banks modernize complex legacy estates without wholesale system replacement.
Industry recognition
Best of Show, FinovateEurope 2025 and 2026 · Awards

Try Tweezr on your stack today

Minimal red-tape, going deeper only on your terms

01Playground
Tweezr cloud
Demo repoTweezr

Play with demo

Use our hosted environment with our sample code. Sign in and try the deterministic engine end-to-end with zero setup or data sharing.

What will I get?
02Sandbox
Your code
Tweezr cloud
Your repoTweezr

Try online

Share your code into our environment. No infrastructure to stand up - see Tweezr work on your real systems and assess fit on your terms.

Does it actually work?
03On-premise POC
Your environment
Your repoTweezr

Contact us

Deploy Tweezr on a single machine using your existing AI licenses, or run it inside your own cloud - your code never leaves your perimeter.

Will my team speed up?

Frequently Asked Questions

Get answers to commonly asked questions.

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Updates

Latest news

pressFebruary 2026

Tweezr Wins Best of Show at FinovateEurope 2026

Tweezr recognized for innovation in legacy system modernization at the premier fintech conference in London.

newsSeptember 2024

Tweezr Joins ABN AMRO Accelerator Program

Selected for the ABN AMRO-sponsored accelerator program, validating our approach to legacy system evolution.

eventMarch 2025

Tweezr at Tokenize 2025

Exhibited at Startup City during Tokenize 2025, demonstrating AI-powered legacy system evolution to financial institutions.

View all news

Secure your system's future with the system-intelligence platform for safe legacy change.

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