Create Plugin

by marcus

Create Plugin is an AI Engineering skill for Claude Code, published by marcus in sidecar.

1K stars79 forkson marcus/sidecarAdded 2026/08/21Repository updated 2026/08/21

View source on GitHub Download repo ZIP

agentic-aiagentic-workflowsclaude-codetui

Install in seconds

Install Create Plugin

Copy Create Plugin into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/marcus/sidecar/tree/main/.claude/skills/create-plugin ~/.claude/skills/create-plugin

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/marcus/sidecar.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: .claude/skills/create-plugin/SKILL.md in marcus/sidecar
Installs to: ~/.claude/skills/create-plugin
Collection: One of 16 skills cataloged from this repository
Category: AI Engineering — 2451 skills

What Create Plugin does

Create Plugin explains how to build Sidecar plugins that implement the plugin interface, render Bubble Tea views, and wire keyboard input, footer hints, event bus, and lifecycle hooks. Use it when adding a plugin or debugging plugin rendering and init/stop behavior.

Create Plugin is cataloged under AI Engineering on DirSkills. Create Plugin comes from a repository tagged agentic-ai, agentic-workflows, claude-code and tui.

Documentation

README

Excerpt

Create Plugin

Architecture Overview

Bubble Tea model: internal/app/model.go owns the active plugin index, dispatches key events, renders plugin views.
Registry: internal/plugin/registry.go stores plugins, handles lifecycle with panic protection, keeps an unavailable map when Init fails (silent degradation).
Plugin contract: internal/plugin/plugin.go defines the interface every plugin must satisfy.
Context: internal/plugin/context.go provides WorkDir, ConfigDir, Adapters, EventBus, Logger, Epoch, and Keymap.
Keymap: internal/keymap maps keys to command IDs. Footer/help reads bindings by context using Plugin.Commands() + Plugin.FocusContext().

Plugin Interface

Every plugin must implement all of these methods:

This is the opening of the README. Read the full README on GitHub.

Commands Create Plugin provides

Slash commands named in this skill’s SKILL.md, listed in the order they first appear.

/flags

Frequently asked about Create Plugin

What else does marcus publish alongside Create Plugin?
Create Plugin is one of 16 skills that DirSkills catalogs from marcus/sidecar, the repository it ships in. Its siblings there include Create Adapter, Create Modal and Create Theme. Each one is a separate skill with its own page in this directory, installs the same way Create Plugin does, and is maintained by marcus in that same repository. The rest of the collection is listed on the marcus/sidecar page.
How does Create Plugin compare to other AI Engineering skills?
Create Plugin ranks #1333 by stars among the 2451 AI Engineering skills in this catalog. The most-starred ones next to it are Architecture Decision Records, AI-First Engineering and Agentic OS. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Create Plugin against them. Open each page to compare what they document and how they install.