investigate

Diagnose software failures through a structured four-phase root-cause investigation workflow.

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

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Systematic debugging by guiding users through root-cause investigation using a repeatable, phase-based workflow.

Core Features & Use Cases

  • Structured four-phase approach to identify root causes: investigate, analyze, hypothesize, implement.
  • Prebuilt preamble and commands for collecting evidence, reading code, and reproducing issues.
  • Works across small to large codebases, enabling proactive fault isolation and minimal regressions during fixes.

Quick Start

Follow Phase 1 through Phase 5 to identify the root cause and verify a fix.

Frequently Asked Questions about investigate

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

FAQPage Schema
What is the best way to find the root cause of a software bug?

Root-cause debugging uses a structured, four-phase investigation workflow to systematically trace software failures. You collect symptoms, read code, check recent changes, and reproduce issues to form and test defensible hypotheses.

How do I systematically debug a failure across a large codebase?

Systematic debugging for large codebases involves a phase-based approach that isolates faults proactively. It guides you through collecting evidence, reproducing issues, and testing hypotheses across varied environments while enforcing minimal regressions during fixes.

How does a structured debugging workflow prevent future regressions?

A structured debugging workflow prevents regressions by enforcing hypothesis testing and regression testing within its phases. It requires a final verification report after implementing a fix, ensuring the root cause is defensibly resolved without introducing new faults.

When should I use a scope lock during root-cause investigation?

A scope lock is used during root-cause investigation to constrain the debugging boundary and prevent drift. It is part of a defined Phase 1-5 workflow that ensures you focus on collecting relevant symptoms and evidence without expanding the search prematurely.

Can I reproduce software issues across different environments using a debugging workflow?

Yes, structured debugging workflows support reproducing software issues across varied environments. The investigation phases guide you through checking recent changes and forming hypotheses to ensure the root cause is accurately isolated regardless of the deployment context.

What are the limitations of unstructured debugging for complex failures?

Unstructured debugging lacks a defensible Phase 1-5 workflow, making it prone to missing symptom collections or recent change checks. Without structured hypothesis and regression testing, complex software failures often resurface due to incomplete verification.