investigate

Guide structured debugging to identify root causes from symptoms, logs, and code paths.

Updated Aug 23, 2026
One-click install
npx skills add https://github.com/Prestonigo/Claude-Skills --skill investigate-prestonigo
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: investigate
Source: https://github.com/Prestonigo/Claude-Skills/tree/main/gstack-main/investigate
Command: npx skills add https://github.com/Prestonigo/Claude-Skills --skill investigate-prestonigo

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Systematic debugging with root-cause investigation to replace patchwork fixes with durable solutions. It codifies four phases—investigate, analyze, hypothesize, implement—so you can reliably identify the real cause before proposing a fix.

Core Features & Use Cases

  • Structured root-cause workflow that guides gathering symptoms, logs, and traces, then tracing the path to the root cause.
  • Step-by-step evidence collection, reproducible steps, and hypothesis testing to validate findings.
  • Applicable to errors, stack traces, performance issues, and regressions across services and repositories.

Quick Start

Describe the bug with steps to reproduce and attach logs, then ask me to start the root-cause investigation.

Frequently Asked Questions about investigate

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

FAQPage Schema
How do I find the root cause of a software bug instead of just patching symptoms?

To find the root cause of a software bug, you need a structured debugging workflow that collects evidence, reproduces the issue, analyzes code paths, and validates hypotheses before implementing a fix. This enforces disciplined root-cause confirmation.

What is the best way to debug a stack trace across multiple services?

The best way to debug a stack trace across services is following a four-phase root-cause investigation: collect symptoms and logs, reproduce the error, analyze the code path, and validate the root cause before applying a durable fix.

How do I systematically reproduce a performance regression?

To systematically reproduce a performance regression, gather detailed evidence and logs, establish step-by-step reproduction conditions, and trace the anomaly through code paths to validate the exact root cause before implementing any changes.

Can I use structured debugging for both errors and performance glitches?

Yes, structured debugging applies to errors, stack traces, performance glitches, and regressions across projects. It guides evidence collection, reproduction, hypothesis testing, and root-cause validation to ensure you implement fixes only after confirming the cause.

Why should I validate a root cause before implementing a code fix?

You should validate a root cause before implementing a code fix to replace patchwork fixes with durable solutions. Confirming the cause through hypothesis testing prevents recurring issues and ensures the fix targets the actual problem.

What steps are needed to start a root-cause investigation?

To start a root-cause investigation, describe the bug with steps to reproduce and attach relevant logs. This initial evidence collection allows the structured debugging process to analyze symptoms and trace the path to the root cause.