Skip to main content
Documentation
Build, discover, and govern secure skills across 35+ AI agents.
Quick Start
No account needed. Install a skill in one command.
npx astercli install pdf-toolsThat's it. The skill is installed for your current AI assistant. Want to install for all detected agents? Add --all-detected.
Getting Started
For Developers
Building Skills
- Creating a Skill
Start from 11 templates with aster init
- SKILL.md Format
The skill file specification
- Testing Skills
Dry-run validation, contract checking, coverage
- Evaluating Skills
Trigger evals, functional tests, benchmarks
- Optimizing Descriptions
AI-powered description optimizer with train/test split
- Security Scoring
31 patterns, 0-100 scoring, publish gates
- Publishing Workflow
Validation → lint → tests → security → publish
- VS Code Extension
Syntax highlighting, completion, live validation
- Best Practices
Write effective, high-quality skills