rootnode-anti-pattern-detection

A checker for seven project-structure problems that can make Claude give unpredictable answers or ignore instructions.

In plain words
What is it for?
Use it to diagnose problems such as duplicated guidance, misplaced files, overloaded project contents, or unclear instruction layers.
Why use it?
It helps identify why a Claude Project is producing poor results instead of treating each bad answer as a separate issue.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/drayline/rootnode-skills/rootnode-anti-pattern-detection
Any agent
npx skills add drayline/rootnode-skills --skill rootnode-anti-pattern-detection
Clone the repo
git clone --depth 1 https://github.com/drayline/rootnode-skills

Made for: Claude Code, Codex.

Per session 204 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,092 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00204 $0.03092
Opus 5 $0.00102 $0.01546
Sonnet 5 $0.00041 $0.00618
Haiku 4.5 $0.00020 $0.00309

Measured 2d ago against content hash 2fb3dc09b511, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

rootnode-anti-pattern-detection 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 2d 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.

rootnode-anti-pattern-detection/SKILL.md · 184 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2d ago First seen · 184 lines · 204 tokens per session scan A 2fb3dc09b511

Subscribe to this mod's changes

rootnode-anti-pattern-detection is a skill published in the GitHub repository drayline/rootnode-skills (40 stars, last pushed 1mo ago), with no licence file. It adds 204 tokens to every session and 3,092 once invoked, about $0.0010 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 2026-08-30.