Agent Plugins Marketplace
← All plugins

plugin-builder

v0.5.2

Creates, extends, and fixes plugins in the anton-toolkit-marketplace via task-centric interviews. `create-plugin` scaffolds a new plugin, `extend-plugin` adds to an existing one, and `improve-plugin` applies reactive point fixes after an in-session incident.

Claude Code3 Skills

By Anton2 GitHub starsUpdated 2 weeks ago

Directory evidence

Runtimes
Claude Code
Parsed components
3 skill or MCP entries
Source updated
Sep 8, 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-builder for Claude Code

Installs for the current user
claude plugin marketplace add IchenDEV/agent-plugin-mkt
claude plugin marketplace update agent-plugin-marketplace
claude plugin install plugin-builder@agent-plugin-marketplace

Paste and run these commands in a terminal with Claude Code. 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/lopatuxin/anton-toolkit

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

Plugin files

plugins/plugin-builder/
├── .claude-plugin/plugin.json
├── skills/create-plugin/SKILL.md
├── skills/extend-plugin/SKILL.md
└── skills/improve-plugin/SKILL.md

Included Skills3

create-pluginskills/create-plugin/SKILL.md

Creates a new plugin from scratch in the anton-toolkit-marketplace through a task-centric interview. Use when the plugin the user wants does not yet exist under `plugins/<name>/`; if it already exists, use extend-plugin to add to it or improve-plugin to fix it after an incident. Runs in the main conversation; the interview is not delegated to agents.

extend-pluginskills/extend-plugin/SKILL.md

Extends an existing plugin in the anton-toolkit-marketplace — adds a skill, an agent, or references, or substantially reworks an existing component. Use in a fresh session when the target plugin already exists and the user wants added functionality; if an incident with that plugin just happened use improve-plugin, and if the plugin does not exist yet use create-plugin. Runs in the main conversation; the interview is not delegated to agents.

improve-pluginskills/improve-plugin/SKILL.md

Fixes a plugin in the anton-toolkit-marketplace by editing its source, so the correction persists across sessions. Use only on an explicit request to change plugin source, not in response to complaints or evaluative remarks about a skill or agent's output. For fresh-session planning of new plugin behavior use extend-plugin, or create-plugin when the plugin does not exist yet; for a one-off file override with no plugin-level rule change, skip it. Runs in the main conversation, with at most one question — the target-plugin confirmation.

Plugin manifests1

plugins/plugin-builder/.claude-plugin/plugin.json
{
  "name": "plugin-builder",
  "version": "0.5.2",
  "description": "Creates, extends, and fixes plugins in the anton-toolkit-marketplace via task-centric interviews. `create-plugin` scaffolds a new plugin, `extend-plugin` adds to an existing one, and `improve-plugin` applies reactive point fixes after an in-session incident.",
  "author": {
    "name": "Anton"
  }
}

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-builder on Agent Plugins Marketplace](https://pluginsmp.com/plugins/plugin-builder)