# 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`. ## Terminal output Skills that print to a TTY follow `docs/DESIGN.md` and source `skills/_lib/term.sh` for glyphs, colors, and layout helpers. Don't roll your own ANSI codes or state icons — `term_init` plus `term_state_icon` / `term_header` / `term_table_row` cover the common cases and keep the toolkit visually coherent.