card
Portable tokens of capability, identity, and access
npx skills add majiayu000/claude-skill-registry --skill card-simhacker-moollm-2 --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Card > **Portable tokens of capability, identity, and access.** Cards are templates. Put them "in play" in a [room](../room/) to activate them. > [!TIP] > **Hero-stories.** Actors. Safe pointers to wisdom. No risks of impersonation, just tribute, storytelling, skill sharing and composing. --- ## 📑 Index **Architecture** - [Card Architecture](#card-architecture) — The most important section! - [Recommended Section Order](#recommended-section-order) - [What Goes Where](#what-goes-where) - [Advertisements Before Methods](#advertisements-before-methods) - [Method Placement Rules](#method-placement-rules) **Card Types** - [What's a Card?](#whats-a-card) - [Sidecar Pattern](#sidecar-cardyml-pattern) - [Card Types](#card-types) **Mechanics** - [Activation Records](#activation-records) - [Card State](#card-state) - [Collections](#collections) --- ## Card Architecture > **KEY INSIGHT: Cards are ACTIVATION TRIGGERS, not activation handlers.** This is the most important concept in MOOLLM card design. ### The Fundamental Distinction | | CARD.yml | SKILL.md | |--|----------|----------| | **Purpose** | Decide IF this skill applies | Explain HOW to execute | | **Role** | Activation trigger | A
- 📑 Index
- Card Architecture
- The Fundamental Distinction
- Recommended Section Order
- Why Advertisements Before Methods?
- What Goes Where
- Method Placement Rules
- Target Card Size
- What's a Card?
- The Card Intersection
- Card Examples by Tradition
- Sidecar CARD.yml Pattern
- Why Sidecars?
- Sidecar Card Schema
What does the card skill do?
Portable tokens of capability, identity, and access
How do I install it?
Run `npx skills add majiayu000/claude-skill-registry --skill card-simhacker-moollm-2 --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From majiayu000/claude-skill-registry, a repository with 534 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.