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susomejias
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plugin-creator

Generate Codex plugin directory structures, plugin.json manifests, and marketplace entries.

9|1|Updated May 13, 2026
Search Tags:#automation#codex#scaffold#plugin#manifest#marketplace#developer-tools
One-click install
npx skills add https://github.com/susomejias/rembric --skill plugin-creator-susomejias
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: plugin-creator
Source: https://github.com/susomejias/rembric/tree/main/.agents/skills/plugin-creator
Command: npx skills add https://github.com/susomejias/rembric --skill plugin-creator-susomejias

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

Manually creating Codex plugin directory structures, plugin.json manifests, and marketplace entries is time-consuming and prone to formatting errors, especially when adhering to strict schema and naming conventions for Codex compatibility.

Core Features & Use Cases

  • Automated Plugin Scaffolding: Creates normalized plugin directories with a pre-filled, schema-compliant .codex-plugin/plugin.json manifest, including all required interface fields with editable placeholder values.
  • Optional Companion Structure: Adds skills, hooks, scripts, assets, .mcp.json, and .app.json directories or stub files to the plugin scaffold based on user-specified flags.
  • Marketplace Integration: Generates or updates .agents/plugins/marketplace.json with correctly formatted plugin entries, including default policy values and proper relative paths, for both repo-local and home-local plugin destinations.
  • Use Case: A developer building a new Codex plugin for team task management can run a single command to get a fully structured plugin folder and marketplace entry, avoiding manual file creation and JSON formatting errors.

Quick Start

Use the plugin-creator skill to scaffold a new Codex plugin with all required manifest files, optional companion directories, and a marketplace entry for Codex UI integration.

Frequently Asked Questions about plugin-creator

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I scaffold a Codex plugin directory structure without manual formatting errors?▼

Scaffolding a Codex plugin directory structure is automated to eliminate manual effort and formatting errors. The process generates a normalized plugin folder with a schema-compliant plugin.json manifest and correct relative path conventions.

How do I create a marketplace.json entry for a Codex plugin?▼

Creating a marketplace.json entry for a Codex plugin is handled by generating or updating the file with correctly formatted plugin entries. This includes default policy values and proper relative paths for both repo-local and home-local plugin destinations.

What optional companion directories can I include when building a Codex plugin?▼

When building a Codex plugin, you can include optional companion directories for skills, hooks, scripts, assets, MCP configuration, and app configuration. These are added to the scaffold based on user-specified flags.

Do I need any external dependencies to generate a Codex plugin manifest?▼

No external dependencies are required to generate a Codex plugin manifest. The scaffolding process runs independently to produce schema-compliant plugin.json files with normalized names and valid default policy values.

Why does my manually created Codex plugin fail marketplace schema validation?▼

Manually created Codex plugins often fail marketplace schema validation due to formatting errors and incorrect naming conventions. Automated scaffolding enforces schema compliance, normalized plugin names, and valid default policy values to prevent these issues.

Can I use the plugin-creator skill to set up both repo-local and home-local Codex plugins?▼

Yes, the plugin-creator skill supports developer workflows for building both repo-local and home-local Codex plugins. It generates the correct directory structures and marketplace entries tailored to each specific destination.

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