pattern-recognition

A coding guide that finds patterns already used in a codebase and applies them to new or reviewed code.

In plain words
What is it for?
Use it when building similar modules, components, functions, hooks, or services, reviewing code for inconsistencies, or deciding whether a refactor fits the existing code.
Why use it?
It helps prevent inconsistent structure, naming, file placement, state handling, and error handling when code is added or changed.

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/komluk/scaffolding/pattern-recognition
Any agent
npx skills add komluk/scaffolding --skill pattern-recognition
Clone the repo
git clone --depth 1 https://github.com/komluk/scaffolding

Made for: Claude Code, Codex.

Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,787 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00058 $0.01787
Opus 5 $0.00029 $0.00894
Sonnet 5 $0.00012 $0.00357
Haiku 4.5 $0.00006 $0.00179

Measured 2d ago against content hash b076bea4d6ec, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

pattern-recognition 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.

skills/pattern-recognition/SKILL.md · 224 lines

How it starts

The opening of the file, as written. The whole thing — 224 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Pattern Recognition Skill

Standards for identifying and applying existing codebase patterns to maintain consistency.

When to Apply

  • Before writing new code
  • When implementing similar features
  • Code review for pattern consistency
  • Refactoring decisions

Pattern Detection Process

Step 1: Scan Existing Code

Action Purpose
Find similar modules/components Match structure and naming
Find similar functions/hooks Match return types and patterns
Find similar services Match error handling and API patterns
Check shared-types location Match how the project centralizes types

Step 2: Extract Patterns

Element What to Look For
Module/component structure Imports, signature, body order
State management Local-vs-shared state decisions
Error handling Try/catch style, error messages
Naming conventions Files, functions, types
File organization Directory structure

Step 3: Apply Consistently

Rule Description
Match existing style New code follows established patterns
Document deviations If pattern changes, document why
Refactor if needed Update old code to match new pattern

Example: React + TypeScript conventions (illustrative)

Illustrative — the naming, component, hook, service, and type conventions below are one team's React/TypeScript catalog shown as a concrete example. The reusable skill is the process above (scan → extract → apply existing conventions). Substitute your stack's actual conventions; the value of this skill is matching whatever your codebase already does, not adopting these specific rules.

Naming Conventions

File Naming

Type Convention Example
Component PascalCase AnnotationCard.tsx
Hook camelCase with use useVisualization.ts
Service camelCase apiService.ts
Types camelCase or index types/index.ts
Store camelCase with Store projectStore.ts
Utility camelCase formatters.ts

Read the full file on GitHub · 224 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. 2d ago First seen · 224 lines · 58 tokens per session scan A b076bea4d6ec

Subscribe to this mod's changes

pattern-recognition is a skill published in the GitHub repository komluk/scaffolding (15 stars, last pushed 27d ago), licensed MIT. It adds 58 tokens to every session and 1,787 once invoked, about $0.0003 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.

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