Skill Registry

The Skill Registry is a shadcn/ui-inspired system for discovering and installing AI skills from curated marketplaces. Skills are modular AI capabilities that can be composed into workflows.

How It Works

The registry system enables:

• Skill Discovery — Browse and search available skills from multiple sources
• On-demand Installation — Install only the skills you need via JIT (just-in-time) cloning
• Version Management — Update skills independently from the core CLI
• Selective Loading — Declare required skills per workflow to reduce context usage

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Understanding Sources vs Skills

Concept	What it is	Command	When to use
Source	A GitHub repo containing many skills (marketplace)	looplia registry add <url>	Access a whole collection of skills
Skill	A single modular AI capability	looplia skill add <name>	Install a specific skill

Think of it like package managers:

• Source = Adding a new npm registry or apt repository
• Skill = Installing a specific package from available registries

Example Workflow

1. Sources are configured (default: Anthropic + ComposioHQ)
2. Skills from all sources appear in the catalog
3. Install individual skills as needed:

# See all available skills from all sources
looplia skill list --available

# Install just what you need
looplia skill add xlsx
looplia skill add frontend-design

Tip

Most users only need looplia skill add. Use looplia registry add only when you want skills from a third-party marketplace not included by default.

Default Marketplaces

Looplia ships with two official marketplace sources:

Anthropic Skills

Official skills from Anthropic including document processing, design tools, and productivity utilities.

Browse skills on GitHub

ComposioHQ Skills

Community-curated skills for brand guidelines, media creation, and more.

Browse skills on GitHub

Tip

Skills from default marketplaces are automatically cataloged during looplia init. Run looplia skill list --available to see all available skills.

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Workflow Skills Declaration

Workflows can declare which skills they need using the skills: field in frontmatter:

---
name: document-processor
skills:
  - xlsx
  - pdf
  - docx
steps:
  - skill: xlsx
    input:
      file: "{input.spreadsheet}"
---

When you declare skills in your workflow:

• Only declared skills are loaded into the Claude Code context
• Core skills are always loaded automatically
• This reduces context window usage significantly

Note

Without the skills: declaration, all installed skills are loaded. For large workspaces, explicitly declaring skills improves performance.

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Learn More

Marketplace & Plugins Understand marketplace.json structure and plugin architecture

Bootstrap Process How looplia init downloads sources and compiles the catalog

registry Command Manage skill sources and catalog

skill Command Install and manage individual skills