New: 98,000+ skills indexed from GitHub repos with 100+ stars · every skill safety-checkedBrowse top skillsTop skills
Esc to closeBrowse all skills
Submit a skillBrowse skills
Submit a skillBrowse skills

Agent skill

Plugin Creator

by jeremylongshore in jeremylongshore/tons-of-skills-marketplace

Create automatically creates new AI assistant code plugins with proper structure, validation, and marketplace integration when user mentions creating a plugin, new plugin, or plugin from template.

MITAuto-check passedAgent Workflows

Install Plugin Creator

skills CLI
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill plugin-creator -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install jeremylongshore/tons-of-skills-marketplace plugin-creator --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/.curated/plugin-creator .claude/skills/plugin-creator && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
plugin-creator
GitHub stars
2.8k
Token cost
~1.4k tokens
SKILL.md length
513 words
Files
10 (incl. scripts, references, assets)
Skills in repo
3,342
Repo updated
First seen
Licence
MIT

At a glance

Create automatically creates new AI assistant code plugins with proper structure, validation, and marketplace integration when user mentions creating a plugin, new plugin, or plugin from template.

  • Works in 9 steps: Gather requirements from the user… → Create the plugin directory structure… → Generate .claude-plugin/plugin.json… → …
  • Mentions creating a plugin
  • SKILL.md covers Overview, Prerequisites, Instructions and Output, plus 3 more sections
  • Calls pnpm and jq

What it does

Plugin Creator is an agent skill from jeremylongshore/tons-of-skills-marketplace. Create automatically creates new AI assistant code plugins with proper structure, validation, and marketplace integration when user mentions creating a plugin, new plugin, or plugin from template. specific to AI assistant-code-plugins repository workflow. Use when generating or creating new content. Trigger with phrases like 'generate', 'create', or 'scaffold'.

Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. The skill folder holds 12 other files, including scripts, reference files and assets (for example `assets/README.md`, `references/ARD.md` and `references/PRD.md`). Compatibility notes: Designed for Claude Code

It sits in Agent Workflows, covering Hooks and plugins. It works with Model Context Protocol. The repository describes itself as: Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com. The licence is MIT.

When your agent uses it

  • Mentions creating a plugin
  • Plugin from template
  • Creating new content
  • With phrases like generate

Example prompts

  • “generate”
  • “create”
  • “scaffold”
  • “/plugin-creator”

Requirements

  • Compatibility (from SKILL.md): Designed for Claude Code
  • Pre-approved tools (allowed-tools): Write, Read, Grep, Bash(cmd:*)

Workflow steps

9 steps, taken from the first numbered list in SKILL.md.

  1. Gather requirements from the user request: plugin name (kebab-case), category (productivity, security, devops, testing, etc.), plugin type…
  2. Create the plugin directory structure under plugins/[category]/[plugin-name]/
  3. Generate .claude-plugin/plugin.json using the template from ${CLAUDE_SKILL_DIR}/references/file-templates.md. Populate all required…
  4. Generate README.md with installation instructions, usage examples, a description section, and contributor information.
  5. Create a LICENSE file with MIT license text (or the specified license).
  6. Generate component files based on the plugin type
  7. Add the new plugin entry to .claude-plugin/marketplace.extended.json with matching name, version, category, description, source path, and…
  8. Run pnpm run sync-marketplace to regenerate marketplace.json.
  9. Validate the new plugin by running ./scripts/validate-all-plugins.sh plugins/[category]/[plugin-name]/. Fix any reported issues before…

What it can do on your machine

Read from SKILL.md and the folder at commit 23ea8d4. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Write
    • Read
    • Grep
    • Bash(cmd:*)

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 1 file in scripts/, which the agent can run.

    Shell commands in SKILL.md call:

    • pnpm
    • jq

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use pnpm, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

  • Compatibility

    Designed for Claude Code

    From compatibility in the SKILL.md frontmatter.

Context cost

Plugin Creator loads about 1.4k tokens when it runs, and up to ~4.3k if it reads all its reference files. Until then it costs about 95 tokens; SKILL.md has 513 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~95
When it runs · the whole SKILL.md, loaded when a task matches
~1.4k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~4.3k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from jeremylongshore/tons-of-skills-marketplace at commit 23ea8d4, republished under its MIT licence (© jeremylongshore). 513 words, ~1,428 tokens.

Download SKILL.mdSave it as .claude/skills/plugin-creator/SKILL.md (or your agent's skills folder). This skill also uses 9 other files; get the full folder from GitHub.
name
plugin-creator
description
Create automatically creates new AI assistant code plugins with proper structure, validation, and marketplace integration when user mentions creating a plugin, new plugin, or plugin from template. specific to AI assistant-code-plugins repository workflow. Use when generating or creating new content. Trigger with phrases like 'generate', 'create', or 'scaffold'.
allowed-tools
Write, Read, Grep, Bash(cmd:*)
compatibility
Designed for Claude Code
version
2.20.0
author
Jeremy Longshore <jeremy@intentsolutions.io>
license
MIT
tags
example, workflow, plugin-creator

Plugin Creator

Overview

Scaffolds new Claude Code plugins with proper directory structure, required files, marketplace catalog integration, and full validation. Supports all plugin types: command plugins, agent plugins, skill plugins, MCP server plugins, and hybrid combinations.

Prerequisites

  • Write access to the plugins/ directory and .claude-plugin/marketplace.extended.json
  • jq installed for JSON generation and validation
  • pnpm run sync-marketplace available at the repository root
  • ./scripts/validate-all-plugins.sh available for post-creation validation

Instructions

  1. Gather requirements from the user request: plugin name (kebab-case), category (productivity, security, devops, testing, etc.), plugin type (commands, agents, skills, MCP, or combination), description, and keywords. Default author to the repository owner if unspecified (see ${CLAUDE_SKILL_DIR}/references/plugin-creation-process.md).

  2. Create the plugin directory structure under plugins/[category]/[plugin-name]/:

    plugins/[category]/[plugin-name]/
├── .claude-plugin/
│   └── plugin.json
├── README.md
├── LICENSE
└── [commands/ | agents/ | skills/ | hooks/ | mcp/]

  3. Generate .claude-plugin/plugin.json using the template from ${CLAUDE_SKILL_DIR}/references/file-templates.md. Populate all required fields: name, version (default 1.0.0), description, author (name and email), repository, license (default MIT), and keywords (minimum 2).

  4. Generate README.md with installation instructions, usage examples, a description section, and contributor information.

  5. Create a LICENSE file with MIT license text (or the specified license).

  6. Generate component files based on the plugin type:

    • Commands: create commands/[command-name].md with proper YAML frontmatter (name, description, model).
    • Agents: create agents/[agent-name].md with YAML frontmatter including model field.
    • Skills: create skills/[skill-name]/SKILL.md with frontmatter (name, description, allowed-tools).
    • MCP: create package.json, tsconfig.json, src/index.ts, and .mcp.json.

  7. Add the new plugin entry to .claude-plugin/marketplace.extended.json with matching name, version, category, description, source path, and keywords.

  8. Run pnpm run sync-marketplace to regenerate marketplace.json.

  9. Validate the new plugin by running ./scripts/validate-all-plugins.sh plugins/[category]/[plugin-name]/. Fix any reported issues before completion.

Output

A complete, CI-ready plugin containing:

  • All required files (plugin.json, README.md, LICENSE)
  • Component files matching the requested plugin type with proper frontmatter
  • Marketplace catalog entry in marketplace.extended.json
  • Synchronized marketplace.json
  • Validation confirmation from validate-all-plugins.sh
Show full SKILL.md (229 more words)Show less

Error Handling

ErrorCauseSolution
Plugin name already existsDuplicate name in plugins/ directory or marketplace catalogChoose a unique name; check existing plugins with ls plugins/*/
Invalid categoryCategory not recognized by marketplace schemaUse one of the valid categories: productivity, security, devops, testing, community, examples, packages, mcp
JSON syntax error in generated filesMalformed template outputRun jq empty on each generated JSON file and fix syntax
Marketplace sync failureNew entry has schema violationsVerify all required fields are present in the marketplace.extended.json entry
Validation script failureMissing required files or incorrect structureReview the validation output and create/fix the flagged files

Examples

Create a command plugin: Trigger: "Create a new security plugin called 'owasp-scanner' with commands." Process: Create plugins/security/owasp-scanner/ directory, generate plugin.json, README.md, LICENSE, and commands/scan.md with proper frontmatter. Add to marketplace, sync, validate (see ${CLAUDE_SKILL_DIR}/references/examples.md).

Scaffold a skills plugin: Trigger: "Scaffold a skills plugin for code review." Process: Create plugin directory with skills/code-review/SKILL.md containing trigger keywords for code review tasks. Generate plugin.json with appropriate keywords. Add to marketplace, sync, validate.

Create an MCP server plugin: Trigger: "Create a new MCP plugin for database queries." Process: Create plugins/mcp/db-query/ with package.json (including @modelcontextprotocol/sdk dependency), tsconfig.json, src/index.ts, .mcp.json, and standard files. Add to marketplace, sync, validate.

Resources

  • ${CLAUDE_SKILL_DIR}/references/plugin-creation-process.md -- detailed creation workflow
  • ${CLAUDE_SKILL_DIR}/references/file-templates.md -- templates for plugin.json, commands, agents, and skills
  • ${CLAUDE_SKILL_DIR}/references/examples.md -- creation scenario walkthroughs
  • ${CLAUDE_SKILL_DIR}/references/errors.md -- error handling patterns

© jeremylongshore, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 9 other files (scripts, references, assets) in skills/.curated/plugin-creator of jeremylongshore/tons-of-skills-marketplace.

  • SKILL.md
  • assets/README.md
  • references/ARD.md
  • references/PRD.md
  • references/README.md
  • references/errors.md
  • references/examples.md
  • references/file-templates.md
  • references/plugin-creation-process.md
  • scripts/README.md

Open the folder on GitHubat commit 23ea8d4

Compare with similar skills

Plugin Creator next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Plugin Creator compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Plugin Creator this skilljeremylongshore/tons-of-skills-marketplace2.8k—~1.4kAutomated safety check: PassMIT
MCP Integration for Pluginsanthropics/claude-plugins-official38k11 repos~3.1kAutomated safety check: PassApache-2.0
Crush Configurationcharmbracelet/crush29k—~3.7kAutomated safety check: PassCustom licence
OpenpetsOpenPetsHQ/openpets1.3k—~2.1kAutomated safety check: PassMIT
Claude Automation Recommenderanthropics/claude-plugins-official38k3 repos~2.7kAutomated safety check: NotesApache-2.0
Mistral Vibe Plugin Creatormistralai/mistral-vibe5.1k—~3.1kAutomated safety check: PassApache-2.0

Similar skills

  • MCP Integration for Plugins

    anthropics/claude-plugins-official

    Official

    Explains how to bundle Model Context Protocol servers in a Claude Code plugin, covering config files, stdio, SSE, HTTP and WebSocket server types, and authentication.

    38k GitHub starsUsed in 11 repos~3.1k tokens
    Agent WorkflowsAuto-check passed

  • Crush Configuration

    charmbracelet/crush

    Explains how to configure the Crush coding agent with crushrc or crush.json, covering providers, models, LSPs, MCP servers, hooks, permissions and config precedence.

    29k GitHub stars~3.7k tokensUpdated yesterday
    Agent WorkflowsAuto-check passed

  • Openpets

    OpenPetsHQ/openpets

    A skill your agent uses whenever the user wants to build, extend, debug, test, validate, locally load, package, or publish an OpenPets plugin; work with the OpenPets Plugin SDK v3, plugin manifest…

    1.3k GitHub stars~2.1k tokensUpdated 11 days ago
    Agent WorkflowsAuto-check passed

  • Claude Automation Recommender

    anthropics/claude-plugins-official

    Official

    Scans a codebase and suggests which Claude Code hooks, subagents, skills, plugins and MCP servers fit its stack, without changing any files.

    38k GitHub starsUsed in 3 repos~2.7k tokens
    Agent WorkflowsAuto-check: notes

  • Mistral Vibe Plugin Creator

    mistralai/mistral-vibe

    Official

    Shows how to build a Vibe plugin package in the Agent Plugins 1.0 format, with a plugin.json manifest and optional skills, MCP servers, hooks and other components.

    5.1k GitHub stars~3.1k tokensUpdated yesterday
    Agent WorkflowsAuto-check passed

  • Agent Setup Health Audit

    tw93/Waza

    Audits a project's agent configuration, instruction drift, hooks, MCP and AI maintainability, then reports prioritized findings with evidence and next actions.

    7.2k GitHub stars~5.2k tokensUpdated 2 days ago
    Agent WorkflowsAuto-check: notes

More from jeremylongshore/tons-of-skills-marketplace

All 3,342 skills in this repo

  • Performing Security Code Review

    jeremylongshore/tons-of-skills-marketplace

    Execute this skill enables AI assistant to conduct a security-focused code review using the security-agent plugin.

    2.8k GitHub starsUsed in 2 repos~1.3k tokens
    Auto-check: notes

  • Analyzing Text With NLP

    jeremylongshore/tons-of-skills-marketplace

    Execute this skill enables AI assistant to perform natural language processing and text analysis using the nlp-text-analyzer plugin.

    2.8k GitHub starsUsed in 1 repo~819 tokens
    Auto-check passed

  • Building Neural Networks

    jeremylongshore/tons-of-skills-marketplace

    Execute this skill allows AI assistant to construct and configure neural network architectures using the neural-network-builder plugin.

    2.8k GitHub starsUsed in 1 repo~1k tokens
    Auto-check passed

  • Detecting Data Anomalies

    jeremylongshore/tons-of-skills-marketplace

    Process identify anomalies and outliers in datasets using machine learning algorithms.

    2.8k GitHub starsUsed in 1 repo~1.4k tokens
    Auto-check passed

  • Explaining Machine Learning Models

    jeremylongshore/tons-of-skills-marketplace

    Build this skill enables AI assistant to provide interpretability and explainability for machine learning models.

    2.8k GitHub starsUsed in 1 repo~1k tokens
    Auto-check passed

  • Optimizing Prompts

    jeremylongshore/tons-of-skills-marketplace

    Execute this skill optimizes prompts for large language models (llms) to reduce token usage, lower costs, and improve performance.

    2.8k GitHub starsUsed in 1 repo~1k tokens
    Auto-check passed

Works with

Categories

Questions about Plugin Creator

What does Plugin Creator do?

Create automatically creates new AI assistant code plugins with proper structure, validation, and marketplace integration when user mentions creating a plugin, new plugin, or plugin from template. Plugin Creator is an agent skill from jeremylongshore/tons-of-skills-marketplace. Create automatically creates new AI assistant code plugins with proper structure, validation, and marketplace integration when user mentions creating a plugin, new plugin, or plugin from template.

When should I use Plugin Creator?

Plugin Creator fits situations like: mentions creating a plugin; plugin from template; creating new content; with phrases like generate.

How do I install Plugin Creator in Claude Code?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill plugin-creator -a claude-code`. Or copy the skill folder (skills/.curated/plugin-creator in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/plugin-creator in your project. Claude Code loads it when a task matches its description.

How do I install Plugin Creator in Codex?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill plugin-creator -a codex`. Or copy the skill folder (skills/.curated/plugin-creator in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/plugin-creator in your project. Codex loads it when a task matches its description.

Can I use Plugin Creator in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill plugin-creator -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/plugin-creator, .gemini/skills/plugin-creator, .github/skills/plugin-creator and .opencode/skills/plugin-creator in your project.

What does Plugin Creator need to run?

Going by SKILL.md and its folder, Plugin Creator needs the command-line tools its instructions call (pnpm and jq). Its frontmatter pre-approves these tools: Write, Read, Grep, Bash(cmd:*). Compatibility (from SKILL.md): Designed for Claude Code.

Does Plugin Creator access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Plugin Creator safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Plugin Creator use?

Plugin Creator is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Plugin Creator use?

About 1.4k tokens (SKILL.md is roughly 5.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 2.9k tokens, read only when the agent opens those files.

What are the alternatives to Plugin Creator?

Skills that share tags, products or a category with Plugin Creator: MCP Integration for Plugins (anthropics/claude-plugins-official, 38k stars), Crush Configuration (charmbracelet/crush, 29k stars), Openpets (OpenPetsHQ/openpets, 1.3k stars) and Claude Automation Recommender (anthropics/claude-plugins-official, 38k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Plugin Creator?

jeremylongshore (a GitHub user) maintains it in jeremylongshore/tons-of-skills-marketplace, which has 2,821 GitHub stars. The repository holds 3,342 skills in this directory. The repository was last updated on October 8, 2026.

Source: jeremylongshore/tons-of-skills-marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.