Root Cause

Root Cause is a Quality skill for Claude Code, published by crbnos in carbon.

2.3K stars318 forkson crbnos/carbonAdded 2026/07/20+1% in starsRepository updated 2026/07/20

agentic-platformassemblylinebusinesserpleanmanagementmanufacturingmcp-servermespostgresqlqmsreact-routersupabasetypescript

Install in seconds

Install Root Cause

Copy Root Cause into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/crbnos/carbon/tree/main/.ai/skills/root-cause ~/.claude/skills/root-cause

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/crbnos/carbon.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: .ai/skills/root-cause/SKILL.md in crbnos/carbon
Installs to: ~/.claude/skills/root-cause
Collection: One of 47 skills cataloged from this repository
Category: Quality — 1897 skills

What Root Cause does

Performs read-only root cause analysis for bugs, test failures, and unexpected behaviors. Produces a brief identifying the root cause, files to change, approach, and risks, without making any edits or state changes.

Root Cause is cataloged under Quality on DirSkills. Root Cause comes from a repository tagged agentic-platform, assemblyline, business, erp and lean.

Documentation

README

Excerpt

root-cause — read-only bug analysis

You are performing read-only analysis: no file edits, no branches, no commands that mutate state. Output is a brief that a human or /fix acts on.

The iron rule: no fix without a root cause. A fix proposed before the cause is understood is a guess, and guesses create new bugs. Symptom patches are failure even when they make the error disappear.

Announce at start: "Using the root-cause skill — read-only analysis of this bug."

Step 0: Load context

This is the opening of the README. Read the full README on GitHub.

Commands Root Cause provides

Slash commands named in this skill’s SKILL.md, listed in the order they first appear.

/fix
/test
/debugging-difficult-bugs

Frequently asked about Root Cause

What else does crbnos publish alongside Root Cause?
Root Cause is one of 47 skills that DirSkills catalogs from crbnos/carbon, the repository it ships in. Its siblings there include Agent Browser, Agent Browser and Browser Error Snapshot. Each one is a separate skill with its own page in this directory, installs the same way Root Cause does, and is maintained by crbnos in that same repository. The rest of the collection is listed on the crbnos/carbon page.
How does Root Cause compare to other Quality skills?
Root Cause ranks #531 by stars among the 1897 Quality skills in this catalog. The most-starred ones next to it are Benchmark, Benchmark Optimization Loop and API Design Patterns. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Root Cause against them. Open each page to compare what they document and how they install.