# Ch21-Skill-System

- [21.1 Skill Platform Design](/en/ch21-skill-system/21.1-skill-platform-design.md)
- [21.2 Skill Structure](/en/ch21-skill-system/21.2-skill-structure.md)
- [21.3 Skill Installation and Management](/en/ch21-skill-system/21.3-skill-installation-and-management.md)
- [21.4 ClawHub Skill Registry](/en/ch21-skill-system/21.4-clawhub-skill-registry.md)