---
title: OpenPlanr Investigate
description: Diagnose a bug, regression, error, or unexplained behavior and optionally implement a bounded fix.
url: https://openplanr.dev/docs/skills/investigate
updated: 2026-10-06
related:
  - https://openplanr.dev/docs/skills/doctor.md
---

# OpenPlanr Investigate

Skill family: Setup and diagnostics.

Diagnose a bug, regression, error, or unexplained behavior and optionally implement a bounded fix. Use for root-cause investigation, not planned feature delivery.

## Run it

- Claude Code: `/investigate`. If /investigate runs another command, use /planr:investigate.
- Codex: `$investigate`. With the OpenPlanr plugin for Codex, use $planr:investigate.
- Cursor: `@planr-investigate`. Cursor applies the planr-investigate rule when you mention it in chat.

## Use it to

- Investigate a bug, regression, error, or unexplained behavior
- Reproduce a defect, establish its root cause, or apply a bounded fix
- Investigate why this fails

## Not for

- Plan a new feature
- Run a broad product review