Debugging

Guide root-cause investigation before implementing fixes for complex software failures.

Updated Feb 12, 2026
One-click install
npx skills add https://github.com/duc01226/SoftwareDevCareers --skill debugging-duc01226
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: Debugging
Source: https://github.com/duc01226/SoftwareDevCareers/tree/main/.claude/skills/debugging
Command: npx skills add https://github.com/duc01226/SoftwareDevCareers --skill debugging-duc01226

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires npm, and includes scripts (resource) and references (resource) components.

What problem does it solve?

Systematic debugging framework that ensures root-cause investigation before fixes, preventing symptom fixes and regressive changes.

Core Features & Use Cases

  • Systematic Debugging: four-phase framework (root-cause investigation, pattern analysis, hypothesis testing, implementation) to ensure comprehensive understanding before changing code.
  • Root Cause Tracing: trace backward through call stacks to identify the original trigger and fix at the source.
  • Defense-in-Depth: add validations at entry, business logic, environment, and debug instrumentation layers to prevent regressions.
  • Verification: run verification commands and read outputs before claiming completion or success.

Quick Start

Start with Phase 1: read error messages carefully, reproduce the issue, and gather evidence before proposing any fix.

Frequently Asked Questions about Debugging

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I find the root cause of a bug instead of just fixing the symptom?

Root-cause debugging enforces a four-phase workflow—investigation, pattern analysis, hypothesis testing, and implementation—to trace failures backward through call stacks. You identify the original trigger and fix at the source before applying changes.

How do I debug flaky tests and complex failures across multi-component systems?

Systematic debugging handles multi-component software systems by guiding you through root-cause investigation of deep stack traces and flaky tests. You reproduce the issue, gather evidence, and validate hypotheses across development, testing, and production environments.

What is defense-in-depth validation and how does it prevent regressions?

Defense-in-depth validation adds checks at entry, business logic, environment, and debug instrumentation layers. This multi-layer verification prevents regressive changes by ensuring comprehensive understanding before and after modifying code.

How do I systematically verify a bug fix is actually complete?

Verification requires running verification commands and reading their outputs before claiming completion. The debugging framework enforces this final step to confirm the root-cause fix resolved the issue without introducing new failures.

What's the best way to debug production failures without causing additional regressions?

A systematic debugging framework prevents symptom fixes by enforcing root-cause investigation before any code changes. You trace failures backward through stack traces, test hypotheses, and apply defense-in-depth validation to avoid regressions across environments.

Do I need npm to use this systematic debugging framework?

Yes, npm is a required dependency for running the debugging scripts and references. The framework uses these components to guide root-cause investigation and verification across multi-component software systems.