capability-workbench

Plug'n Skills

Ready-to-install skills and plugins that make coding agents better at real development work.

Plug'n Skills is a library of plugin packs for Codex, Claude Code, and other coding agents. Each pack gives an agent a focused workflow: what to inspect, which commands to run, what to verify, and when to use a deterministic helper instead of improvising from a prompt.

Use it when you want an agent that can handle more than generic code edits:

• build, debug, profile, test, package, and release Swift apps;
• work with Kotlin Multiplatform, Tauri, PixiJS, Codex CLI, and Claude Code;
• review architecture, product direction, interface quality, and game systems;
• plan scientific research, spec-driven delivery, context compression, and agent capability synthesis.

The repository ships 13 installable plugin packs and more than 150 focused agent skills. Every pack is plain repository content: manifests, SKILL.md files, references, validators, and helper scripts. You can inspect it, validate it from a fresh clone, install only the packs you need, and keep generated local marketplace or cache state out of the repo.

Quick Start

Easiest: Ask Your Agent

For most users, the simplest path is to paste this prompt into the coding agent you already use:

Install Plug'n Skills from https://github.com/Xopoko/plug-n-skills on this
computer. Follow the repository instructions for the coding agent you are
running in, validate the source tree first, use a dry run before writing global
plugin state, install only the plugin packs I request unless I ask for all of
them, and report exactly what was changed.

Clone And Validate

git clone https://github.com/Xopoko/plug-n-skills.git
cd plug-n-skills
python3 scripts/validate-repository.py

Codex

Preview the Codex install plan before writing global state:

python3 scripts/install-codex-plugins.py --dry-run

Install or refresh every plugin from this checkout:

python3 scripts/install-codex-plugins.py
python3 scripts/install-codex-plugins.py --check-only

Install only selected plugin packs:

python3 scripts/install-codex-plugins.py --plugin capability-workbench
python3 scripts/install-codex-plugins.py \
  --plugin kotlin-multiplatform \
  --plugin spec-driven-development

The installer validates the repository, generates a local Codex marketplace file at .agents/plugins/marketplace.json, points Codex's local marketplace at this checkout, enables the selected plugins, and materializes cache entries under ~/.codex/plugins/cache/local/....

.agents/ and Codex cache directories are local runtime state. They are not part of the published source tree.

Claude Code

Add this repository as a Claude Code marketplace, then install the plugin pack you need:

/plugin marketplace add Xopoko/plug-n-skills
/plugin install capability-workbench@xopoko-plug-n-skills
/reload-plugins

For a local checkout, use the checkout path instead of the GitHub shorthand:

/plugin marketplace add /path/to/plug-n-skills

Claude Code reads the root .claude-plugin/marketplace.json and each plugin's .claude-plugin/plugin.json.

Included Plugin Packs