Shared Patterns Skill for Claude

by athola

Provide reusable patterns for validation, error handling, scaffolding. Use for skill consistency.

8k tokens

context cost

the whole folder, loaded on every use

files

instructions only

copies elsewhere

how many repositories repackaged it

324

stars on the repo

on the repository, not the skill itself

Install

one command, takes just this skill from the repository

npx skills add https://github.com/athola/claude-night-market --skill shared-patterns

The instruction itself

11 sections, as written by the author

Shared Patterns

Overview

Reusable patterns and templates for skill and hook development.

When NOT To Use

Authoring a skill end to end (use abstract:skill-authoring)
Cross-plugin contracts, which belong in leyline rather than here

Purpose

This skill provides shared patterns that are referenced by other skills in the abstract plugin. It follows DRY principles by centralizing common patterns.

Pattern Categories

Validation Patterns

See modules/validation-patterns.md for:

Input validation templates
Schema validation patterns
Error reporting formats

Error Handling

See modules/error-handling.md for:

Exception hierarchies
Error message formatting
Recovery strategies

Testing Templates

See modules/testing-templates.md for:

Unit test scaffolding
Integration test patterns
Mock fixtures

Workflow Patterns

See modules/workflow-patterns.md for:

Checklist templates
Feedback loop patterns
Progressive disclosure structures

Usage

Reference these patterns from other skills:

For validation patterns, see the `shared-patterns` skill's
[validation-patterns](../shared-patterns/modules/validation-patterns.md) module.

Verification: Run the command with --help flag to verify availability.

Exit Criteria

[ ] Each of the four module files (validation-patterns.md, error-handling.md,

testing-templates.md, workflow-patterns.md) exists under

plugins/abstract/skills/shared-patterns/modules/.

[ ] Any cross-skill reference to these modules uses a relative path beginning with

../shared-patterns/modules/ and resolves to an existing file on disk.

[ ] No consuming skill references a path under the deprecated skills/shared/modules/

directory pattern; such references are surfaced as broken links.

[ ] The hub SKILL.md itself stays under 150 lines with no substantive pattern content

duplicated from the modules it links.

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How to use it

Copy the folder

Take athola/shared-patterns from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.