# Reproduce And Fix Issues

> Reproduce a confirmed issue on the closest real surface, find root cause, and optionally prepare a minimal draft fix with evidence. Use after issue triage has enough information to attempt reproduction.

- Skill: `theonlyfusioncube/reproduce-and-fix-issues` (Agent Skill)
- Install (CLI): `npx skillmds@latest add theonlyfusioncube/reproduce-and-fix-issues`
- Raw SKILL.md: https://api.skillmd.com/api/skills/theonlyfusioncube/reproduce-and-fix-issues/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: TheOnlyFusionCube (https://skillmd.com/u/theonlyfusioncube)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/theonlyfusioncube/reproduce-and-fix-issues

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# Reproduce and fix issues

1. Work in an isolated branch/worktree/sandbox when the host can provide one.
2. Reproduce the exact reported behavior and save the smallest durable evidence.
3. If reproduction fails, vary only evidence-backed environment assumptions; return the blocker instead of guessing.
4. Trace root cause. If a cheap behavioral regression test exists, see it fail for the same reason.
5. Make the smallest fix that explains the reproduction, then rerun the reproduction and targeted checks.
6. Prepare a draft change/PR only when authorized. Post status back to the source thread/ticket with proof and remaining uncertainty.