debugging

Diagnose and fix bugs through reproducible workflows and hypothesis testing.

3|1|Updated Feb 10, 2026
One-click install
npx skills add https://github.com/deandum/claude-resources --skill debugging-deandum
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: debugging
Source: https://github.com/deandum/claude-resources/tree/main/skills/core/debugging
Command: npx skills add https://github.com/deandum/claude-resources --skill debugging-deandum

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Bugs disrupt software reliability and slow down development. The debugging discipline helps teams reproduce, isolate, and root-cause issues to restore correctness quickly and prevent recurrence.

Core Features & Use Cases

  • Reproduce reliably: establish deterministic steps to trigger the bug and capture a failing state.
  • Shrink inputs and hypothesize: minimize reproduction scenarios while forming testable hypotheses.
  • Root-cause and verify: identify underlying cause and prove fixes with regression tests.
  • Use Case: when a test fails or production incident occurs, follow the workflow to converge on a solution and document the audit trail.

Quick Start

Describe the exact debugging task you want solved in one clear instruction to begin the reproducibility phase.

Frequently Asked Questions about debugging

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

FAQPage Schema
How do I debug a failing test or a production incident?

To debug a failing test or a production incident, follow a disciplined workflow to establish reproducibility, shrink inputs, form testable hypotheses, and verify root-cause fixes with regression tests. Describe the exact task in one clear instruction to begin.

What is the best way to find the root cause of a bug across different environments?

Finding the root cause of a bug across environments requires a structured process to identify and reproduce the issue deterministically, isolate underlying causes, and prove fixes with regression tests. This minimizes reproduction scenarios while verifying correctness.

How do I reproduce an intermittent bug reliably?

Reproduce an intermittent bug reliably by establishing deterministic steps to trigger the bug and capture a failing state. This reproducibility phase shrinks inputs and minimizes reproduction scenarios to form testable hypotheses for root-cause analysis.

Can I use this debugging workflow for unexpected behavior in any codebase or service?

Yes, you can use this debugging workflow for unexpected behavior in any codebase or service. It applies a structured process to reproduce, isolate, and root-cause issues across environments, requiring steps for reproducibility, hypothesis testing, and regression verification.

Why do I need to shrink inputs when diagnosing a bug?

Shrinking inputs is necessary when diagnosing a bug to minimize reproduction scenarios. This step in the debugging workflow isolates the exact trigger, forming testable hypotheses that converge quickly on a root-cause solution and prevent recurrence.

What should I do after identifying the root cause of a software bug?

After identifying the root cause of a software bug, you must prove fixes with regression tests. This regression verification step restores correctness, prevents recurrence, and documents the audit trail for the incident response or failing test.