What is senior-anti-pattern-auditor?

An audit discipline for identifying named architectural, code, and process anti-patterns—recurring approaches that make software harder to change or maintain. It explains why each pattern is harmful and suggests the least costly suitable refactor.

Use it to inspect architecture and code for issues such as god objects, missing module boundaries, dead code, vendor-specific leakage, magic values, and awkward function interfaces.

It replaces vague criticism with a recognisable problem and a reasoned remedy. This helps teams address tangled boundaries, duplicated code, hidden constants, and other maintenance risks.

How Jm-Paunlagui/CATHERINE configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to Jm-Paunlagui/CATHERINE. 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/Jm-Paunlagui/CATHERINE/main/.claude/skills/senior-anti-pattern-auditor/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/Jm-Paunlagui/CATHERINE

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/jm-paunlagui/catherine/senior-anti-pattern-auditor/github.svg)](https://agentmods.dev/skills/jm-paunlagui/catherine/senior-anti-pattern-auditor)

Your own site

<a href="https://agentmods.dev/skills/jm-paunlagui/catherine/senior-anti-pattern-auditor"><img src="https://agentmods.dev/badge/skills/jm-paunlagui/catherine/senior-anti-pattern-auditor/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/jm-paunlagui/catherine/senior-anti-pattern-auditor"><img src="https://agentmods.dev/badge/skills/jm-paunlagui/catherine/senior-anti-pattern-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 132 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,216 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.

Model	Per session	Once invoked
Fable 5.1	$0.00132	$0.01216
Opus 5.5	$0.00053	$0.00486
Sonnet 5.5	$0.00026	$0.00243
Haiku 4.5	$0.00013	$0.00122

Measured 2mo ago against content hash 28574f8d09b8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

senior-anti-pattern-auditor 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 2mo 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.

.claude/skills/senior-anti-pattern-auditor/SKILL.md · 58 lines

How it starts

The opening of the file, as written. The whole thing — 58 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Senior Anti-Pattern Auditor

You are a Senior Anti-Pattern Auditor. You name the pattern (so the author can look it up), explain why it bites here, and give the cheapest viable refactor. Never just say "this is bad."

Architectural

God object / god component: one class or .view.jsx doing too much. Any Aumovio view > 400 lines is a candidate for extraction.
Big ball of mud: no module boundaries. Hooks importing API files, views importing other features' hooks, controllers calling controllers.
Lava flow: dead code left in because no one is sure it's used. Delete aggressively; git remembers.
Golden hammer: forcing every problem into one tool. Use the documented decision tables.
Vendor lock-in via leakage: raw oracledb outside oracle.js, raw Axios outside httpClient.js. Firewalled for a reason.

Code-level

Magic numbers/strings: if (status === 3) → named constant. Log strings live in constants/messages/.
Primitive obsession: (userId, tenantId, role) as three positional strings → typed object.
Boolean parameter trap: doThing(user, true, false) → options object { dryRun, force }.
Shotgun surgery: one logical change edits many files → missing abstraction.
Feature envy: a method using another object's fields more than its own → move the method.
Copy-paste programming: identical block in 3 places → extract to a service method.
Callback / promise pyramid: > 3 nested .then() → linear async/await.
Swallowing errors: catch (e) {} → errors must flow through AppError and ErrorHandlerMiddleware.
Stringly-typed APIs: kind: string + switch → discriminated union or polymorphism.

Process

Cargo cult: copying a pattern without understanding why. If you can't explain why code exists, don't ship it.
Bikeshedding in review: arguing naming while ignoring a logic bug.
YAGNI violation: building configurability for a nonexistent use case. Build for the one tenant you have.
DRY taken too far: abstracting two similar things before the third arrives. Rule of three — often the two diverge and the abstraction becomes a straitjacket.

Read the full file on GitHub · 58 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.

2mo ago First seen · 58 lines · 132 tokens per session scan A 28574f8d09b8

Subscribe to this mod's changes

senior-anti-pattern-auditor is a skill published in the GitHub repository Jm-Paunlagui/CATHERINE (2 stars, last pushed 2d ago), licensed Apache-2.0. It adds 132 tokens to every session and 1,216 once invoked, about $0.0005 per session on Opus 5.5. 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.

Code review Debugging

senior-anti-pattern-auditor next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
senior-anti-pattern-auditorJm-Paunlagui/CATHERINE	Skill	2	2d ago	Apache-2.0	A	132	Claude Code
sync-bridgechromium/chromium	Skill	25k	yesterday	BSD-3-Clause	A	109	Claude Code, Codex
sync-model-processorchromium/chromium	Skill	25k	yesterday	BSD-3-Clause	A	98	Claude Code, Codex
adversarial-revieweremdash-cms/emdash	Skill	14k	yesterday	MIT	A	72	Claude Code, Codex
gsd-ns-reviewopen-gsd/gsd-core	Skill	11k	yesterday	MIT	A	16	Claude Code
gitnexushashgraph-online/awesome-codex-plugins	Skill	1.5k	yesterday	Apache-2.0	A	58	Codex
issuejeremylongshore/tons-of-skills-marketplace	Skill	2.9k	yesterday	MIT	A	115	Claude Code

CATHERINE: Skill for Claude Code