Code Design Rationale Investigator
cursor/plugins
Digs into why code is shaped the way it is by checking git history, pull requests and connected tools in parallel, then reporting a cited read on the tradeoffs.
Uncover root causes through recursive Why questioning and consequence exploration.
Install Root Cause Analysis
$ npx skills add itseffi/agentic-os --skill root-cause-analysis -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install itseffi/agentic-os root-cause-analysis --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/itseffi/agentic-os.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/root-cause-analysis .claude/skills/root-cause-analysis && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "root-cause-analysis" agent skill from https://github.com/itseffi/agentic-os/tree/main/.agents/skills/root-cause-analysis into .claude/skills/root-cause-analysis/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "root-cause-analysis", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/itseffi/agentic-os/tree/main/.agents/skills/root-cause-analysisType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add itseffi/agentic-os --skill root-cause-analysis -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install itseffi/agentic-os root-cause-analysis --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/itseffi/agentic-os.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/root-cause-analysis .agents/skills/root-cause-analysis && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "root-cause-analysis" agent skill from https://github.com/itseffi/agentic-os/tree/main/.agents/skills/root-cause-analysis into .agents/skills/root-cause-analysis/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "root-cause-analysis", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add itseffi/agentic-os --skill root-cause-analysis -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install itseffi/agentic-os root-cause-analysis --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/itseffi/agentic-os.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/root-cause-analysis .cursor/skills/root-cause-analysis && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "root-cause-analysis" agent skill from https://github.com/itseffi/agentic-os/tree/main/.agents/skills/root-cause-analysis into .cursor/skills/root-cause-analysis/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "root-cause-analysis", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/itseffi/agentic-os.git --path .agents/skills/root-cause-analysis--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add itseffi/agentic-os --skill root-cause-analysis -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install itseffi/agentic-os root-cause-analysis --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/itseffi/agentic-os.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/root-cause-analysis .gemini/skills/root-cause-analysis && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "root-cause-analysis" agent skill from https://github.com/itseffi/agentic-os/tree/main/.agents/skills/root-cause-analysis into .gemini/skills/root-cause-analysis/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "root-cause-analysis", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install itseffi/agentic-os root-cause-analysisInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add itseffi/agentic-os --skill root-cause-analysis -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/itseffi/agentic-os.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/root-cause-analysis .github/skills/root-cause-analysis && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "root-cause-analysis" agent skill from https://github.com/itseffi/agentic-os/tree/main/.agents/skills/root-cause-analysis into .github/skills/root-cause-analysis/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "root-cause-analysis", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add itseffi/agentic-os --skill root-cause-analysis -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install itseffi/agentic-os root-cause-analysis --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/itseffi/agentic-os.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/root-cause-analysis .opencode/skills/root-cause-analysis && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "root-cause-analysis" agent skill from https://github.com/itseffi/agentic-os/tree/main/.agents/skills/root-cause-analysis into .opencode/skills/root-cause-analysis/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "root-cause-analysis", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
root-cause-analysis- GitHub stars
- 115
- Used in
- 1 other repo
- Token cost
- ~408 tokens
- SKILL.md length
- 202 words
- Files
- 2
- Skills in repo
- 28
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Uncover root causes through recursive Why questioning and consequence exploration.
- Works in 3 steps: Recursive "Why" Questioning → Consequence Exploration → First Principles Check
- Tasks that involve Root cause analysis
- SKILL.md covers When to Use, The Process, Output Format and When Not to Use
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Root Cause Analysis is an agent skill from itseffi/agentic-os. Uncover root causes through recursive Why questioning and consequence exploration. Use before acting on problems.
Its SKILL.md is about 410 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `agents/openai.yaml`).
It sits in Development, covering Root cause analysis. The repository describes itself as: Agentic personal OS to automate high-leverage workflows with Codex, Claude Code, Pi, OpenClaw and other coding agents/ runtime platforms.
When your agent uses it
- Tasks that involve Root cause analysis
Example prompts
- “/root-cause-analysis”
Workflow steps
3 steps, taken from the step headings in SKILL.md.
- Recursive "Why" Questioning
- Consequence Exploration
- First Principles Check
What it can do on your machine
Read from SKILL.md and the folder at commit 7eaa71c. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Root Cause Analysis loads about 408 tokens when it runs. Until then it costs about 33 tokens; SKILL.md has 202 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 202 words (~408 tokens).
“Uncover root causes and explore consequences through structured questioning.”
- name
- root-cause-analysis
Files
SKILL.md and 1 other file in .agents/skills/root-cause-analysis of itseffi/agentic-os.
- SKILL.md
- agents/openai.yaml
Open the folder on GitHubat commit 7eaa71c
Used in 1 other repository
We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in itseffi/agentic-os, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Root Cause Analysis next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Root Cause Analysis this skillitseffi/agentic-os | 115 | 1 repos | ~408 | Automated safety check: Pass | Custom licence | |
| Code Design Rationale Investigatorcursor/plugins | 10k | 9 repos | ~2.6k | Automated safety check: Pass | None | |
| OpenLogi macOS Permissions TriageAprilNEA/OpenLogi | 23k | — | ~2.5k | Automated safety check: Notes | Apache-2.0 | |
| Bug Finder for daisyUIsaadeghi/daisyui | 43k | — | ~2.3k | Automated safety check: Pass | MIT | |
| Root Cause Debugginggarrytan/gstack | 136k | — | ~1.4k | Automated safety check: Pass | MIT | |
| Graph-Based Bug Tracingtirth8205/code-review-graph | 32k | 1 repos | ~287 | Automated safety check: Pass | MIT |
Similar skills
- Official
OpenLogi macOS Permissions Triage
AprilNEA/OpenLogi
Decides whether an OpenLogi device problem on macOS is a privacy-permission (TCC) problem, using agent log lines, and says which identity needs which grant.
Bug Finder for daisyUI
saadeghi/daisyui
Investigates suspected bugs in the daisyUI monorepo through read-only analysis, then writes a decision-ready fix plan in tmp/bugs without changing any product code.
Root Cause Debugging
garrytan/gstack
Investigates bugs, errors and stack traces in phases and requires a root-cause hypothesis to be confirmed before any fix is written.
Graph-Based Bug Tracing
tirth8205/code-review-graph
Traces a bug through a code knowledge graph, following callers, callees and execution flow before opening source files, within a small token budget.
Om Auto Fix Issue
go-musicfox/go-musicfox
Fix or implement a tracker issue end to end from a single command — takes an issue id or a plain problem description (filed first via om-prepare-issue), classifies, then drives the bug autofix chain…
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Related
Categories
Questions about Root Cause Analysis
What does Root Cause Analysis do?
Uncover root causes through recursive Why questioning and consequence exploration. Root Cause Analysis is an agent skill from itseffi/agentic-os. Uncover root causes through recursive Why questioning and consequence exploration.
When should I use Root Cause Analysis?
Root Cause Analysis fits situations like: tasks that involve Root cause analysis.
How do I install Root Cause Analysis in Claude Code?
Run `npx skills add itseffi/agentic-os --skill root-cause-analysis -a claude-code`. Or copy the skill folder (.agents/skills/root-cause-analysis in itseffi/agentic-os) into .claude/skills/root-cause-analysis in your project. Claude Code loads it when a task matches its description.
How do I install Root Cause Analysis in Codex?
Run `npx skills add itseffi/agentic-os --skill root-cause-analysis -a codex`. Or copy the skill folder (.agents/skills/root-cause-analysis in itseffi/agentic-os) into .agents/skills/root-cause-analysis in your project. Codex loads it when a task matches its description.
Can I use Root Cause Analysis in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add itseffi/agentic-os --skill root-cause-analysis -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/root-cause-analysis, .gemini/skills/root-cause-analysis, .github/skills/root-cause-analysis and .opencode/skills/root-cause-analysis in your project.
What does Root Cause Analysis need to run?
SKILL.md names no scripts, command-line tools or credentials: Root Cause Analysis is instructions for the agent only.
Does Root Cause Analysis access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Root Cause Analysis safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Root Cause Analysis use?
Root Cause Analysis has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Root Cause Analysis use?
About 408 tokens (SKILL.md is roughly 1.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Root Cause Analysis?
Skills that share tags, products or a category with Root Cause Analysis: Code Design Rationale Investigator (cursor/plugins, 10k stars), OpenLogi macOS Permissions Triage (AprilNEA/OpenLogi, 23k stars), Bug Finder for daisyUI (saadeghi/daisyui, 43k stars) and Root Cause Debugging (garrytan/gstack, 136k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Root Cause Analysis?
itseffi (a GitHub user) maintains it in itseffi/agentic-os, which has 115 GitHub stars. The repository holds 28 skills in this directory. The repository was last updated on August 27, 2026.
Source: itseffi/agentic-os on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.