Portage

Portage is a marketplace for portable AI-assistant extensions, offering skills and plugins for enhanced productivity.

Portage

CI

A marketplace for portable AI-assistant extensions.

Portage packages skills, commands, and agents as Claude Code plugins and exposes the skills under .agents/skills/ so tools that follow the Open Skills Standard — Cursor, Codex, OpenCode, and others — can use them without a separate install. Skills are the portable unit: they work anywhere the standard is supported. The plugin format is the richer unit: Claude Code users get skills bundled with commands and agents.

What's inside

  • plugins/ — each plugin is a self-contained directory with its own plugin.json, agents, commands, and skills.
  • .claude-plugin/marketplace.json — the registry Claude Code reads.
  • .claude/skills/ — symlinks to every skill across every plugin. Populated by the link script.
  • .agents/skills/ — a symlink to .claude/skills/. Point any Open Skills Standard tool here.

Install a plugin in Claude Code

Add the marketplace, then install the plugin:

/plugin marketplace add grootenberg/portage
/plugin install prose@portage

Use skills in other tools

The skills live as self-contained directories under .agents/skills/. Each directory has a SKILL.md plus any bundled files (references/, scripts/, assets/). Tools that read the Open Skills Standard format can load them directly.

Point your tool at .agents/skills/ — no extra setup.

Add a plugin or skill

  1. Drop the plugin into plugins/<plugin-name>/ following the existing structure.

  2. Register it in .claude-plugin/marketplace.json.

  3. Run the link script:

    ./scripts/link-marketplace-skills.sh

The script symlinks each skill directory into .claude/skills/ and maintains the .agents/skills symlink. It detects collisions on skill names, cleans up stale symlinks, and flags duplicate frontmatter names.

Re-run the script only when skills are added or removed. Edits inside an existing skill directory propagate through the symlink automatically.

Available plugins

  • prose — composable content quality toolkit. Seven skills for writing craft, citations, SEO, video scripts, social posts, transcript cleanup, and AI artifact removal, plus two commands that chain them into editorial workflows.

License

MIT. See LICENSE.

Contributing

See CONTRIBUTING.md. Portage is early; open an issue before starting significant work.