root-cause-investigator SKILL.md skillA
root-cause-investigator from umputun/cc-thingz is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add umputun/cc-thingz/root-cause-investigator@git:20260217.d627b3fPins git:20260217.d627b3f in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- umputun/cc-thingz
- Path
plugins/thinking-tools/skills/root-cause-investigator/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260217.d627b3f, committed Feb 17, 2026
- Size
- 3,515 bytes
- Repository stars
- 492
- License
- MIT
Systematic root cause analysis for errors, bugs, and unexpected behaviors using 5-Why methodology. Use when user reports errors, build failures, test failures, performance issues, integration problems, or any "it's not working" scenarios.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Root Cause Investigator Apply systematic 5-Why methodology to identify fundamental root causes of issues rather than treating symptoms. Guide thorough investigation through structured evidence gathering and analysis. ## Activation Triggers - errors, bugs, or unexpected behavior - build failures or test failures - performance issues or degradation - integration problems - any "it's not working" scenarios ## The 5-Why Methodology Systematically ask "why" five times to drill down to root cause: 1. **Why #1**: identify immediate cause (symptoms) 2. **Why #2**: uncover process/workflow issues 3. **Why #3**: find system-level problems 4. **Why #4**: discover design/architecture issues 5. **Why #5**: reveal fundamental root cause ## Investigation Workflow ### 1. Gather Initial Context Collect information about the issue: ``` ## Issue Summary [brief description of reported problem] ## Initial Symptoms - what user is experiencing - error messages or logs - observable behavior ## Context Gathering - environment details - recent changes - related components - steps to reproduce ``` ### 2. Apply 5-Why Analysis Structure the investigation with progressive depth: ``` …
Read the whole file at its exact version.
How to install
mdr add umputun/cc-thingz/root-cause-investigator@sha256:eaeaeb08e6e125c1The line at the top of this page pins the label git:20260217.d627b3f, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_lkpo6g6cygqwy44r)
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Versions
The registry has recorded 1 version of this file, committed on Feb 17, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3515 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
umputun/cc-thingz · 492 stars · license MIT · pushed 2026-10-25 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_lkpo6g6cygqwy44r GET https://markdownregistry.com/api/v1/resolve?ref=umputun/cc-thingz/root-cause-investigator GET https://markdownregistry.com/api/v1/blob/eaeaeb08e6e125c1022f865f847e777fbff1782a389587a89e1a66e0ea9101f0
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.