template-agentic-ready-repo: Skill for Claude Code

.agents/skills/root-cause/SKILL.md

root-cause is a skill for Claude Code, Codex from bachkukkik/template-agentic-ready-repo. It costs 48 tokens per session (626 once invoked), scanned A, original, Apache-2.0.

A method for finding the underlying cause of a bug, failed test, or unanswered setup question. It treats the first plausible explanation as a hypothesis and checks it against evidence from multiple sources.

In plain words
What is it for?
Use it to investigate runtime bugs, test failures, configuration problems, missing requirements, and questions about why something fails.
Why use it?
It reduces guesswork and prevents stopping at a symptom or the first explanation that seems to fit.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is bachkukkik/template-agentic-ready-repo's own configuration. It tells Claude Code and Codex how to work on template-agentic-ready-repo itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything template-agentic-ready-repo configures →

Reuse

Borrowing it

Nothing to install: this file belongs to bachkukkik/template-agentic-ready-repo. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/bachkukkik/template-agentic-ready-repo/main/.agents/skills/root-cause/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/bachkukkik/template-agentic-ready-repo

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for root-cause

README.md
[![agentmods](https://agentmods.dev/badge/skills/bachkukkik/template-agentic-ready-repo/root-cause/github.svg)](https://agentmods.dev/skills/bachkukkik/template-agentic-ready-repo/root-cause)
Your own site
<a href="https://agentmods.dev/skills/bachkukkik/template-agentic-ready-repo/root-cause"><img src="https://agentmods.dev/badge/skills/bachkukkik/template-agentic-ready-repo/root-cause/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for root-cause

Your own site · 80×15
<a href="https://agentmods.dev/skills/bachkukkik/template-agentic-ready-repo/root-cause"><img src="https://agentmods.dev/badge/skills/bachkukkik/template-agentic-ready-repo/root-cause.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 626 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00048 $0.00626
Opus 5 $0.00024 $0.00313
Sonnet 5 $0.00010 $0.00125
Haiku 4.5 $0.00005 $0.00063

Measured 5d ago against content hash 47bdde4cf611, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

root-cause scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/root-cause/SKILL.md · 35 lines

How it starts

The opening of the file, as written. The whole thing — 35 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Root Cause

Shared rule (both tracks): the first plausible hit is a hypothesis, not the answer. Widen before you commit — list several possible causes, or read across several sources — then rule each in or out with evidence. Stopping at the first thing that fits is the failure mode this skill exists to prevent.

Which track?

  • Requirement / setup / "why does X fail" answerable from docs, knowledge, or config → Evidence Track
  • Live bug / test failure / wrong runtime behavior needing a code-level explanation → Debugging Track
  • Bug that traces to an external system's unmet requirement → Evidence first (find the requirement), then Debugging (locate & fix the violating code).
  • Unsure → start Evidence. A found requirement usually feeds the debugging anyway; guessing wrong here is cheaper than mis-starting Debugging.

Evidence Track

Widen: one source is rarely the whole answer. Read across sources; a single doc may be partial, outdated, or version/context-specific. Keep reading until the sources agree or you understand why they differ.

Gate before answering: every claim you rely on must trace to something you actually read — not memory, not inference from a title. Check it matches the user's version/context. If sources conflict, say so; don't silently pick one.

Stop: if you can't find support after a real search, say what's missing rather than guess-filling. "I couldn't find X" beats a confident wrong answer.

Debugging Track

Rule: don't fix until you can say "X causes Y causes symptom Z, and my fix changes X." Can't fill that in? Keep digging, don't guess.

Widen before you dig: list every plausible cause first (a few, not one). The first cause that fits is a hypothesis — bugs often have more than one contributing cause. Rule each in or out with evidence before committing. Digging deep into the first guess just makes a wrong guess more confident.

Dig by asking "why does that happen?" upstream from where the error shows to where it starts. Use only the effort the bug needs: a typo's chain is one line; an intermittent/async/multi-layer bug needs reproducing and narrowing until the cause is undeniable. Reach for logs or git bisect only when reasoning can't localize it.

Read the full file on GitHub · 35 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 35 lines · 48 tokens per session scan A 47bdde4cf611

Subscribe to this mod's changes

root-cause is a skill published in the GitHub repository bachkukkik/template-agentic-ready-repo (2 stars, last pushed 5d ago), licensed Apache-2.0. It adds 48 tokens to every session and 626 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-05.

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