copy

Marsolab Skills Marketplace

A dual-compatible plugin marketplace for Claude Code and OpenAI Codex, providing curated skills for AI coding agents.

Installation

Claude Code

/plugin marketplace add marsolab/skills

Then install individual plugins:

/plugin install go-dev@marsolab-skills
/plugin install sys-arch@marsolab-skills

OpenAI Codex

Clone this repository into your project and Codex will discover plugins from .agents/plugins/marketplace.json automatically.

Available Plugins

Plugin	Category	Description
apple-dev	Development	Swift, SwiftUI, HIG
copy	Writing	SaaS copywriting
go-dev	Development	Go backends, CLIs
landing-page-breakdown	Design	Page analysis
multi-agent-config	DevOps	Multi-agent configs
sys-arch	Architecture	System design
front-dev	Development	Modern web apps

Adding a New Plugin

1. Create the plugin directory structure:

   plugins/<plugin-name>/
   ├── .claude-plugin/plugin.json
   ├── .codex-plugin/plugin.json
   └── skills/<skill-name>/
       ├── SKILL.md
       └── references/    (optional)
   

2. Add the SKILL.md with YAML frontmatter:

   ---
   name: my-skill
   description: What this skill does.
   version: 1.0.0
   tags:
     - tag1
     - tag2
   ---
   

3. Run the sync script to regenerate manifests:

   uv run scripts/sync-manifests.py
   

4. Update the category and display name mappings in scripts/sync-manifests.py if needed.

5. Commit all changes and push to main.

Repository Structure

.claude-plugin/marketplace.json    # Claude Code
.agents/plugins/marketplace.json   # Codex
plugins/
  <plugin-name>/
    .claude-plugin/plugin.json
    .codex-plugin/plugin.json
    skills/<skill-name>/
      SKILL.md
      references/
      assets/
      scripts/
scripts/
  sync-manifests.py

Manifest Sync

SKILL.md frontmatter is the single source of truth. All JSON manifests are generated from it:

# Regenerate all manifests
uv run scripts/sync-manifests.py

# Check for drift (used in CI)
uv run scripts/sync-manifests.py --check