Guide for React 19 development with Actions, Server Components, and new hooks. Use for building React 19 apps, form handling, optimistic updates, and migrations.
Install
npx skills add aiskillstore/marketplace --skill react-19npx skills add aiskillstore/marketplace --skill react-19 -a claude-code -gnpx skills add aiskillstore/marketplace --skill react-19 -a codex -ggemini skills install https://github.com/aiskillstore/marketplace.git --path skills/calel33/react-19gh skill install aiskillstore/marketplace react-19git clone --depth 1 https://github.com/aiskillstore/marketplace /tmp/aiskillstore__marketplace
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/aiskillstore__marketplace/skills/calel33/react-19 ~/.claude/skills/react-19 # Claude Code
cp -R /tmp/aiskillstore__marketplace/skills/calel33/react-19 ~/.agents/skills/react-19 # Codex, Cursor, Gemini CLI, Copilot, OpenCode