Kaizen-3C-CLI is a command-line tool designed to facilitate architecture-driven modernization of legacy codebases. It operates on the principle that architectural planning should precede code changes, with human-authored architectural decisions guiding the code transformation process. The tool decomposes legacy code into editable Architecture Decision Records (ADRs), allowing users to recompose their systems for modern technology stacks. Compliance is achieved as a byproduct of this architecture-first approach, rather than being treated as an afterthought, and an audit trail is included by default.
Kaizen-3C-CLI uses a pipeline where principles lead to ADRs, which are then translated into tasks and ultimately into code. The tool employs large language models (LLMs) as executors within a directed chain of control, ensuring that LLMs do not make architectural decisions themselves. Inputs that are not already structured as ADRs are processed by intake and triage agents to generate the necessary specifications before execution. Quality gates are in place to ensure that specifications are complete and clear before any code generation occurs, and tasks are classified and routed appropriately based on their content.
The tool emphasizes evidence-based confidence in its outcomes. It runs actual tests, uses static analysis, and relies on source-verified signals rather than trusting LLM self-assessment. Composite confidence scoring is implemented using multiple signals such as test results, code coverage, ADR compliance, specialist review, pragmatic scoring, and static analysis. The iterative process of code generation and refinement follows a denoising loop—write, evaluate, and refine—until predefined confidence thresholds are met and no outstanding issues remain.
Kaizen-3C-CLI is available as a Python package that can be installed via pip. It is currently in public beta. The tool is intended for teams or individuals looking to modernize existing software systems through an architecture-first methodology, leveraging automated agents while maintaining human oversight and compliance through structured decision records.
kaizen-3c-cli sits in PulseGate's Developer Tools category. It focuses on modernizing and refactoring legacy codebases into compliant, maintainable architectures. kaizen-3c-cli is an open-source project aimed at enterprise developers. The project is open source (Apache-2.0). It runs on the web and the command line.
Kaizen-3C builds and maintains kaizen-3c-cli, and the product first shipped in 2026. The project is developed in the open on GitHub with 25 commits in the last 90 days. Among its 5 catalogued features are legacy code decomposition, architecture-driven refactoring, and audit trail.
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