Reproduce a reported issue

---
name: "aboutcodex-reproduce-issue"
description: "Turn a vague bug report into the smallest repeatable failure with captured evidence. Use when the user asks to reproduce, confirm, or narrow a software defect."
---

# Reproduce a reported issue

Turn a vague bug report into the smallest repeatable failure with captured evidence.

## Workflow

1. Preserve the original report and separate observations from assumptions.
2. Identify the environment, starting state, input, action, and expected result.
3. Reduce the path while keeping the failure, changing one variable at a time.
4. Capture the first useful error, visible symptom, or state difference without exposing secrets.
5. Write a deterministic reproduction or state why the issue could not be reproduced.

Read `references/NOTES.md` before finalizing the work. Follow project instructions and the user's authorized scope. Use available evidence, label assumptions, and never report a check as passing unless it actually ran.

## Deliverable

A minimal reproduction with evidence and the remaining variables. State material limitations and link to changed files or rendered evidence when available.