devlyn:resolve

Trace software bugs to root causes using git history and structured reasoning.

4|Updated Feb 23, 2026
One-click install
npx skills add https://github.com/fysoul17/ian-on-v1 --skill devlyn-resolve
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: devlyn:resolve
Source: https://github.com/fysoul17/ian-on-v1/tree/main/ian-on/.claude/skills/devlyn%3Aresolve
Command: npx skills add https://github.com/fysoul17/ian-on-v1 --skill devlyn-resolve

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps you systematically identify the true root cause of a reported bug or failure so fixes address the underlying problem instead of symptoms.

Core Features & Use Cases

  • Evidence-based root cause analysis: Traces from observed symptoms to the fundamental cause using structured reasoning.
  • Regression discovery: Uses git history and blame to identify when and how the issue was introduced.
  • Plan-first remediation: Performs analysis first, then enters plan mode so you can review and approve before changes.
  • Escalation when unclear: Recommends escalating to a team resolver when the issue spans multiple modules or hypotheses can’t be ruled out.

Quick Start

Provide the exact issue details (error message or failing behavior) as the value of $ARGUMENTS, then ask for root cause analysis and a fix plan.

Frequently Asked Questions about devlyn:resolve

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

FAQPage Schema
How do I debug a software issue to its root cause instead of just fixing the symptom?

To debug to the root cause, you trace from observed symptoms to fundamental causes using evidence-based analysis. This involves git blame investigation, execution-path tracing, and structured 5 Whys reasoning to identify the true origin of failures.

How do I find which git commit introduced a regression causing my current bug?

Finding a regression commit requires git log and blame investigation to pinpoint when and how the issue was introduced. By tracing the execution path and inspecting targeted code history, you can identify the specific change responsible for the failure.

What is the best way to fix a bug that spans multiple modules and has competing hypotheses?

Fixing a multi-module bug requires evidence-based root cause analysis to select among competing hypotheses. When hypotheses cannot be ruled out through systems reasoning, the best approach is escalating to a team resolver for broader investigation.

Can I review the root cause analysis before changes are made to my codebase?

Yes, plan-first remediation performs the root cause analysis first, then enters plan mode. This allows you to review and approve the proposed production-grade fix with tests before any code modifications are actually implemented.

Does root cause analysis work with test-driven fixes for production incidents?

Root cause analysis applies to incident response by combining regression identification with structured 5 Whys reasoning. It culminates in a production-grade fix with tests, ensuring the test-driven fix addresses the fundamental cause rather than temporary symptoms.