Skills Library
Browse and import slash commands that teach Claude new tricks — code review, testing, deployment, and more.
Skills are .claude/commands/ markdown files that give Claude specialized behaviors. Type /review and Claude knows exactly how to review your code. Type /deploy and it follows your deployment playbook.
The Skills Library has a growing catalog of ready-made skills organized by category. Browse, preview, and import with one click. Guild members get full access to the library; imported skills are saved to your starter bundles so every new gem can include them.
Why it matters
Teach Claude new tricks
Each skill is a markdown file that tells Claude how to handle a specific task — review, test, deploy, explain, and more.
One-click import
Browse the catalog, preview any skill, and import it to your starters. It's included in every new gem automatically.
Organized by category
Skills are grouped by what they do — code quality, testing, documentation, deployment. Find what you need fast.
Growing catalog
New skills are added regularly. Guild members get full access to the library and all future additions.
Ready to try it?
Create a free account and download Crystl for macOS.
get started getting started guide →Frequently asked questions
- What is a skill?
- A markdown file in .claude/commands/ that teaches Claude a specific behavior. When you type /skill-name, Claude follows the instructions in that file.
- Can I create my own skills?
- Yes. Add any .md file to your starters with a path like .claude/commands/my-skill.md. It works just like library skills.
- Are skills project-specific?
- Skills in your starter bundles are written to every new gem. You can also insert them into existing gems from the gem settings panel.
- Do I need Guild for skills?
- You can create and use your own skills for free. The Skills Library catalog requires a Guild membership to browse and import.
More features
Gems & Shards
Gems, shards, and the Crystal Rail keep every project one click away.
Track Everything
See what every Claude session is doing at a glance.
Parallel Sessions
Run multiple Claude instances on the same repo without conflicts.
Conversation History
Every session is preserved. Scroll back through the full context anytime.
Prompt Integration
Facet Inserts give you one-click access to saved prompts, commands, and shortcuts.
Agent Config Editor
Create, edit, and manage CLAUDE.md, rules, skills, and agent config files with a block editor, file chooser, and project optimizer.
Project Optimizer
Scan your project for gaps in agent configuration — missing files, incomplete docs, oversized code, and setup issues — with one-click fixes.
Starter Bundles
New gems launch with CLAUDE.md, rules, skills, and MCP config — all pre-configured from your bundle library.
Remote Development
Full Crystl integration over SSH — approval panels, file relay, and click-to-open on remote machines.
Crystl Quest
Assemble a party of specialized agents. Each brings unique skills, coordinates in shared chat, and executes in parallel.
Screenshot Bar
Drag recent screenshots into the terminal. Spotlight-powered, always up to date.