Agent Plugins
A collection of plugins for AI coding agents including Claude Code, Codex, and other agentic development tools.
Plugin Catalog
| Plugin | Description | Type | Command |
|---|
| mermaid-validator | Validates and fixes Mermaid diagram syntax in Markdown files | Command + Agent | /mermaid-validator:check |
| git-workflow | Git workflow automation with Conventional Commits support | Command + Agent + Skill | /git-workflow:merge, /git-workflow:commit, /git-workflow:status, /git-workflow:sync |
| reviewer | Structured spec and implementation review with agent-loop handoff | Command + Agent + Skill | /reviewer:spec, /reviewer:result, /reviewer:init |
| digest | Summarize branches, PRs, diffs, and docs into icon-rich structured cards | Command + Agent + Skill | /digest:digest, /digest:release |
| ralph-loop | Continuous self-referential AI loops with session isolation | Command + Hook | /ralph-loop:ralph-loop, /ralph-loop:cancel-ralph |
Getting Started
Claude Code
# Add this marketplace to Claude Code
/plugin marketplace add shdennlin/agent-plugins
# Install a plugin
/plugin install reviewer@shdennlin-plugins
# List available plugins
/plugin list shdennlin-plugins
# Update a plugin
/plugin update reviewer@shdennlin-plugins
# Remove a plugin
/plugin uninstall reviewer@shdennlin-plugins
Codex
Tell Codex to fetch and follow the install instructions for the plugin you want:
| Plugin | Install command |
|---|
| reviewer | Fetch and follow instructions from https://raw.githubusercontent.com/shdennlin/agent-plugins/main/plugins/reviewer/.codex/INSTALL.md |
| git-workflow | Fetch and follow instructions from https://raw.githubusercontent.com/shdennlin/agent-plugins/main/plugins/git-workflow/.codex/INSTALL.md |
| mermaid-validator | Fetch and follow instructions from https://raw.githubusercontent.com/shdennlin/agent-plugins/main/plugins/mermaid-validator/.codex/INSTALL.md |
| digest | Fetch and follow instructions from https://raw.githubusercontent.com/shdennlin/agent-plugins/main/plugins/digest/.codex/INSTALL.md |
| ralph-loop | Fetch and follow instructions from https://raw.githubusercontent.com/shdennlin/agent-plugins/main/plugins/ralph-loop/.codex/INSTALL.md |
Restart Codex after installation to discover the skills.
Update: cd ~/.codex/shdennlin-agent-plugins && git pull — skills update instantly through the symlink.
Contributing
Contributions are welcome! Please see CONTRIBUTING.md for guidelines.
Adding a New Plugin
- Create a new directory under
plugins/
- Follow the standard plugin structure:
plugins/your-plugin/
├── .claude-plugin/
│ └── plugin.json
├── .codex/
│ └── INSTALL.md # (optional) - Codex installation guide
├── commands/ # (optional) - slash commands
├── agents/ # (optional) - proactive agents
├── hooks/ # (optional) - event hooks
├── skills/ # (optional) - auto-discovery skills
└── README.md
- Add your plugin to
.claude-plugin/marketplace.json
- Update this README's plugin catalog
- Submit a pull request
License
MIT License - see LICENSE for details.
Author
shdennlin - GitHub
Resources
shdennlin