Create, validate, and iteratively improve agent skills that follow Anthropic's best practices. Use this skill whenever someone wants to create a new skill, improve an existing skill, write a SKILL.md, set up a skill directory structure, or needs guidance on skill authoring patterns.
Install
npx skills add microsoft/upgrade-agent-plugins --skill creating-skillsnpx skills add microsoft/upgrade-agent-plugins --skill creating-skills -a claude-code -gnpx skills add microsoft/upgrade-agent-plugins --skill creating-skills -a codex -ggemini skills install https://github.com/microsoft/upgrade-agent-plugins.git --path plugins/upgrade-agent/upgrade/skills/generic/creating-skillsgh skill install microsoft/upgrade-agent-plugins creating-skillsgit clone --depth 1 https://github.com/microsoft/upgrade-agent-plugins /tmp/microsoft__upgrade-agent-plugins
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/microsoft__upgrade-agent-plugins/plugins/upgrade-agent/upgrade/skills/generic/creating-skills ~/.claude/skills/creating-skills # Claude Code
cp -R /tmp/microsoft__upgrade-agent-plugins/plugins/upgrade-agent/upgrade/skills/generic/creating-skills ~/.agents/skills/creating-skills # Codex, Cursor, Gemini CLI, Copilot, OpenCode