Does this skill work with any programming language?

While the examples are provided in PHP, the underlying principles of API compatibility, side-effect preservation, and the test coverage matrix apply to all software development environments.

What is the Bug Regression Preventer skill?

It is a specialized capability for Claude Code that provides a systematic checklist to ensure bug fixes don't introduce new problems or break existing functionality.

Can it prevent performance regressions?

Yes, the skill includes specific checks for query patterns, N+1 issues, resource usage, and transaction scopes to ensure the fix doesn't degrade system performance.

How does it improve my testing workflow?

It enforces a mandatory test matrix that includes reproduction tests (which fail before the fix), edge case tests, and regression tests to confirm original behavior is preserved.

Bug Regression Preventer

Name: Bug Regression Preventer
Author: dykyi-roman

bydykyi-roman

•

Security & Testing

Ensures bug fixes are implemented safely without introducing new issues through systematic validation and testing protocols.

The Bug Regression Preventer is a specialized skill for Claude Code designed to guide developers through a rigorous bug-fixing lifecycle. It provides a comprehensive framework for reproducing issues, assessing architectural impact, and maintaining strict API compatibility. By enforcing a mandatory test matrix—including reproduction, edge case, and regression tests—this skill ensures that fixes address the root cause while preserving existing behavior, side effects, and performance standards. It is particularly effective for teams working in complex PHP environments following DDD or Hexagonal Architecture patterns.

Key Features

01Strict API compatibility and exception contract validation

02Mandatory test coverage matrix for reproduction and regression

03Deployment monitoring and structured rollback planning

0445 GitHub stars

05Systematic pre-fix reproduction and impact assessment checklists

06Preservation of side effects, return semantics, and data integrity

Use Cases

01Validating API contract stability during refactoring or bug remediation

02Resolving production bugs in complex PHP applications without breaking downstream dependencies

03Ensuring architectural consistency during emergency hotfixes and patches

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add dykyi-roman/awesome-claude-code bug-regression-preventer

For use in Claude.ai and ChatGPT

Download Skill