# Skill and Agent Updates

**BEFORE creating or updating any skill or agent**, check the official docs:

| Resource | URL |
|----------|-----|
| Skills | https://code.claude.com/docs/en/skills |
| Sub-agents | https://code.claude.com/docs/en/sub-agents |

These APIs change frequently. For detailed reference (frontmatter fields, decision frameworks), see `docs/SKILL-SUBAGENT-REFERENCE.md`.