Why does this skill require a regression test before the fix?

A regression test proves the bug exists and ensures that once fixed, the bug can never return to the codebase without being caught by the test suite.

Does it automatically commit changes?

The skill prepares the fix and provides a standardized commit message format, ensuring high-quality documentation for the project history.

How does root cause analysis differ from standard bug fixing?

Standard fixing often involves patching a 'symptom' (like a null check), whereas root cause analysis traces back to why the null existed in the first place, usually fixing it at the boundary.

What happens if a regression test can't be written?

The workflow emphasizes reproduction; if a bug cannot be reproduced with a test, it's difficult to verify the fix. The skill guides you through gathering enough info to make reproduction possible.

Does this skill work with any programming language?

Yes, the philosophy of root cause analysis and regression testing is language-agnostic and can be applied to any software project Claude supports.

Root Cause Bug Fixer

Name: Root Cause Bug Fixer
Author: yon

byyon

•

Security & Testing

Identifies and resolves software bugs by performing deep root cause analysis and implementing mandatory regression tests.

The Root Cause Bug Fixer skill transforms how Claude handles errors by moving beyond surface-level symptom chasing to address underlying architectural flaws. It enforces a strict test-driven development (TDD) workflow where a failing regression test must be established before any code is modified, ensuring that bugs are not only fixed at their source but stay fixed. By requiring deep analysis and minimal, targeted code changes, this skill maintains codebase integrity and prevents the introduction of technical debt or unrelated regressions.

Key Features

01Isolated Workflows: Automatically manages git worktrees to keep bug fixes clean and separate from main development branches.

02Root Cause Analysis: Employs a systematic 'Why?' approach to find architectural origins rather than patching symptoms.

031 GitHub stars

04Mandatory Regression Testing: Ensures every fix includes a test that proves the bug exists and validates the final solution.

05Subagent Quality Reviews: Spawns specialized code and test reviewers to validate the quality and impact of the fix.

06Context Integration: Automatically updates project documentation to log the root cause and prevent the bug from recurring.

Use Cases

01Systematic resolution of production error logs with documented analysis and minimal code changes.

02Eliminating recurring regressions by establishing permanent automated tests that travel with the fix.

03Resolving complex logic errors where the crash site is different from the actual source of invalid data.

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add yon/agentic-dev-os fix-bug

For use in Claude.ai and ChatGPT

Download Skill