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.