Create a new SKILL.md file following the Agent Skills open standard (agentskills.io). Covers frontmatter schema, section structure, writing effective procedures with Expected/On failure pairs, validation checklists, cross-referencing, and registry integration.
Install
npx skills add pjt222/agent-almanac --skill create-skillnpx skills add pjt222/agent-almanac --skill create-skill -a claude-code -gnpx skills add pjt222/agent-almanac --skill create-skill -a codex -ggemini skills install https://github.com/pjt222/agent-almanac.git --path skills/create-skillgh skill install pjt222/agent-almanac create-skillgit clone --depth 1 https://github.com/pjt222/agent-almanac /tmp/pjt222__agent-almanac
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/pjt222__agent-almanac/skills/create-skill ~/.claude/skills/create-skill # Claude Code
cp -R /tmp/pjt222__agent-almanac/skills/create-skill ~/.agents/skills/create-skill # Codex, Cursor, Gemini CLI, Copilot, OpenCode