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Official agent skill

Principle Fix Root Causes

by cursor in cursor/plugins

Apply when debugging. An agent skill from cursor/plugins.

OfficialNo licenceAuto-check passedDevelopment

Install Principle Fix Root Causes

skills CLI
$ npx skills add cursor/plugins --skill principle-fix-root-causes -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install cursor/plugins principle-fix-root-causes --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/cursor/plugins.git skills-src && mkdir -p .claude/skills && cp -r skills-src/pstack/skills/principle-fix-root-causes .claude/skills/principle-fix-root-causes && rm -rf skills-src

Use ~/.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/

Facts

Skill name
principle-fix-root-causes
GitHub stars
10k
Used in
9 other repos
Token cost
~312 tokens
SKILL.md length
158 words
Files
1
Skills in repo
99
Repo updated
First seen
Licence
None found

At a glance

Apply when debugging. An agent skill from cursor/plugins.

  • Tasks that involve Root cause analysis
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Principle Fix Root Causes is an agent skill from cursor/plugins, published by the product's own GitHub organization. Apply when debugging. Trace each symptom to its root cause and fix it there; reproduce first, ask why until you reach it, resist nil-check guards that silence crashes.

Its SKILL.md is about 310 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development, covering Root cause analysis. The repository describes itself as: Cursor plugin specification and official plugins.

When your agent uses it

  • Tasks that involve Root cause analysis

Example prompts

  • “/principle-fix-root-causes”

What it can do on your machine

Read from SKILL.md and the folder at commit 9f451cf. 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

Principle Fix Root Causes loads about 312 tokens when it runs. Until then it costs about 48 tokens; SKILL.md has 158 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~48
When it runs · the whole SKILL.md, loaded when a task matches
~312

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

Without a licence we can't republish the file, so here is its outline and opening line. It has 158 words (~312 tokens).

“When debugging, do not fix symptoms. Trace every problem to its root cause and fix it there.”

— opening of SKILL.md by cursor
name
principle-fix-root-causes
disable-model-invocation
true

Read the full SKILL.md on GitHub

Files

Just SKILL.md in pstack/skills/principle-fix-root-causes of cursor/plugins.

Open the folder on GitHubat commit 9f451cf

Used in 9 other repositories

We found 9 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 9 other GitHub owners. This page covers the copy in cursor/plugins, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Principle Fix Root Causes 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.

Principle Fix Root Causes compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Principle Fix Root Causes this skillcursor/plugins10k9 repos~312Automated safety check: PassNone
OpenLogi macOS Permissions TriageAprilNEA/OpenLogi23k—~2.5kAutomated safety check: NotesApache-2.0
Bug Finder for daisyUIsaadeghi/daisyui43k—~2.3kAutomated safety check: PassMIT
Root Cause Debugginggarrytan/gstack136k—~1.4kAutomated safety check: PassMIT
Graph-Based Bug Tracingtirth8205/code-review-graph32k1 repos~287Automated safety check: PassMIT
Om Auto Fix Issuego-musicfox/go-musicfox2.6k1 repos~5kAutomated safety check: NotesGPL-3.0

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    23k GitHub stars~2.5k tokensUpdated 3 days ago
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  • Root Cause Debugging

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    32k GitHub starsUsed in 1 repo~287 tokens
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  • Systematic Debugging

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Categories

Questions about Principle Fix Root Causes

What does Principle Fix Root Causes do?

Apply when debugging. An agent skill from cursor/plugins. Principle Fix Root Causes is an agent skill from cursor/plugins, published by the product's own GitHub organization. Apply when debugging.

When should I use Principle Fix Root Causes?

Principle Fix Root Causes fits situations like: tasks that involve Root cause analysis.

How do I install Principle Fix Root Causes in Claude Code?

Run `npx skills add cursor/plugins --skill principle-fix-root-causes -a claude-code`. Or copy the skill folder (pstack/skills/principle-fix-root-causes in cursor/plugins) into .claude/skills/principle-fix-root-causes in your project. Claude Code loads it when a task matches its description.

How do I install Principle Fix Root Causes in Codex?

Run `npx skills add cursor/plugins --skill principle-fix-root-causes -a codex`. Or copy the skill folder (pstack/skills/principle-fix-root-causes in cursor/plugins) into .agents/skills/principle-fix-root-causes in your project. Codex loads it when a task matches its description.

Can I use Principle Fix Root Causes 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 cursor/plugins --skill principle-fix-root-causes -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/principle-fix-root-causes, .gemini/skills/principle-fix-root-causes, .github/skills/principle-fix-root-causes and .opencode/skills/principle-fix-root-causes in your project.

What does Principle Fix Root Causes need to run?

SKILL.md names no scripts, command-line tools or credentials: Principle Fix Root Causes is instructions for the agent only.

Does Principle Fix Root Causes 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 Principle Fix Root Causes 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 Principle Fix Root Causes use?

No licence was found for Principle Fix Root Causes or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Principle Fix Root Causes use?

About 312 tokens (SKILL.md is roughly 1.2k 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 Principle Fix Root Causes?

Skills that share tags, products or a category with Principle Fix Root Causes: OpenLogi macOS Permissions Triage (AprilNEA/OpenLogi, 23k stars), Bug Finder for daisyUI (saadeghi/daisyui, 43k stars), Root Cause Debugging (garrytan/gstack, 136k stars) and Graph-Based Bug Tracing (tirth8205/code-review-graph, 32k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Principle Fix Root Causes?

cursor (a GitHub organization, an official publisher) maintains it in cursor/plugins, which has 10,130 GitHub stars. The repository holds 99 skills in this directory. The repository was last updated on October 6, 2026.

Source: cursor/plugins on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.