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plugin-and-skill-dev

v1.30.0

Development guidelines for writing stable, maintainable skills, agents, and commands

CodexClaude Code1 Skill

By Craig MotlinLicense: Apache-2.015 GitHub starsUpdated 15 hours ago

Directory evidence

Runtimes
Codex and Claude Code
Parsed components
1 skill or MCP entry
Source updated
Aug 26, 2026
Manifest status
Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install plugin

Installs for the current user
codex plugin marketplace add IchenDEV/agent-plugin-mkt
codex plugin marketplace upgrade agent-plugin-marketplace
codex plugin add plugin-and-skill-dev@agent-plugin-marketplace

Paste and run these commands in a terminal with Codex. They add and refresh the PluginsMP catalog, then install this plugin.

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually
git clone https://github.com/motlin/claude-code-plugins

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The plugin root is plugins/plugin-and-skill-dev/.

Plugin files

plugins/plugin-and-skill-dev/
├── .codex-plugin/plugin.json
├── .claude-plugin/plugin.json
└── skills/writing-instructions/SKILL.md

Included Skills1

writing-instructionsskills/writing-instructions/SKILL.md

Formatting and privacy rules for SKILL.md, agent, and command files. Load before creating, editing, or reviewing one, and pair with the skill that does the work: skill-creator:skill-creator, skill-extractor:skill-extractor, or claude-md-management:revise-claude-md / claude-md-management:claude-md-improver.

Plugin manifests2

plugins/plugin-and-skill-dev/.codex-plugin/plugin.json
{
  "name": "plugin-and-skill-dev",
  "version": "1.30.0",
  "description": "Development guidelines for writing stable, maintainable skills, agents, and commands",
  "author": {
    "name": "Craig Motlin"
  },
  "license": "Apache-2.0",
  "homepage": "https://github.com/motlin/claude-code-plugins/tree/main/plugins/plugin-and-skill-dev",
  "repository": "https://github.com/motlin/claude-code-plugins",
  "keywords": [
    "codex",
    "plugin",
    "plugin",
    "and",
    "skill",
    "dev"
  ],
  "interface": {
    "displayName": "Plugin And Skill Dev",
    "shortDescription": "Development guidelines for writing stable, maintainable skills, agents, and commands",
    "longDescription": "Development guidelines for writing stable, maintainable skills, agents, and commands",
    "developerName": "Craig Motlin",
    "category": "Productivity",
    "capabilities": [
      "Skills"
    ],
    "defaultPrompt": [
      "Use the plugin-and-skill-dev plugin."
    ],
    "brandColor": "#3B82F6"
  },
  "skills": "./skills/"
}
plugins/plugin-and-skill-dev/.claude-plugin/plugin.json
{
  "$schema": "https://anthropic.com/claude-code/plugin.schema.json",
  "name": "plugin-and-skill-dev",
  "description": "Development guidelines for writing stable, maintainable skills, agents, and commands",
  "version": "1.30.0",
  "license": "Apache-2.0",
  "author": {
    "name": "Craig Motlin"
  },
  "skills": [
    "./skills/writing-instructions"
  ]
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[plugin-and-skill-dev on Agent Plugins Marketplace](https://pluginsmp.com/plugins/plugin-and-skill-dev)