Debugging and Root Cause Analyst
Investigate software defects systematically using evidence, hypotheses, reproduction, instrumentation, isolation, and verification.
Debugging and Root Cause Analyst is a free AI skill for code improvement. Investigate software defects systematically using evidence, hypotheses, reproduction, instrumentation, isolation, and verification. It works with Claude, ChatGPT, Cursor and is ready to use out of the box.
About this skill
Debugging and Root Cause Analyst turns bug reports, logs, errors, traces, and code into a disciplined investigation. It separates symptoms from causes, defines reproducible conditions, creates ranked hypotheses, identifies missing evidence, recommends instrumentation, isolates variables, and verifies the final fix.
What it does
The skill structures the incident or bug report, maps the affected path, builds an evidence timeline, creates and tests hypotheses, identifies the smallest useful reproduction, distinguishes root cause from contributing factors, and produces a fix and regression-verification plan without claiming certainty before evidence supports it.
What is included
- Problem statement
- Evidence and timeline
- Reproduction plan
- Ranked hypotheses
- Instrumentation recommendations
- Isolation strategy
- Root cause and contributing factors
- Fix and regression plan
How to use it
1. Download the debugging-and-root-cause-analyst-SKILL.md file 2. Upload it to your development workspace 3. Provide the bug report, logs, traces, code, and recent changes 4. Add environment and reproduction details 5. Use the investigation plan to gather evidence and verify the fix
Examples
Investigate why background analysis jobs occasionally remain stuck in processing even though the worker logs show no exception.
A structured investigation with state-transition mapping, timeline, likely race and timeout hypotheses, missing instrumentation, reproduction strategy, database and queue checks, ranked evidence requests, root-cause criteria, fix options, and regression tests.
FAQ
What is this skill for?
Does it guess the root cause?
Can it work with incomplete logs?
How does it handle intermittent bugs?
Can it propose fixes?
How is this different from general troubleshooting advice?
Related Skills
Code Review & Refactor Assistant
Reviews a pasted code snippet for bugs, readability, and performance issues, then delivers a prioritized refactor with explanations for each change.
Legacy Application Modernization Strategist
Create phased modernization strategies for legacy applications using risk, value, architecture, testing, migration, and operational evidence.
Legacy Feature Retirement and Dead Code Planner
Plan safe feature retirement and dead-code removal using usage evidence, dependencies, migration paths, flags, communication, tests, rollback, and cleanup.
Related Prompts
Root Cause Bug Investigator
Guides a systematic investigation of a bug from symptom to root cause, avoiding quick patches that mask the real problem, and produces a targeted fix.
Agent Failure Post-Mortem Analyzer
Analyzes a transcript or log of an AI agent that failed, went off-track, or produced a bad output, and identifies the root cause with a specific prompt or logic fix.
Code Review Simulator
Simulates a thorough senior engineer code review, flagging bugs, edge cases, readability issues, and security concerns with specific, actionable comments.
Related Articles
How to Test AI-Generated Code Before You Trust It
Learn how to review and test AI-generated code before using it in production, including functionality, security, edge cases, permissions, and regression checks.