Diagnose and fix performance problems in Shiny for Python apps — slow startup, sluggish interactions, blocking operations, and apps that struggle beyond a handful of concurrent users. Use when a Shiny for Python app is slow, hangs, recomputes too much, times out, or must support more users; when the user asks to "speed up", "optimize", or "make faster" a Python Shiny app; or when preparing a…
Install
npx skills add posit-dev/skills --skill shiny-py-optimizenpx skills add posit-dev/skills --skill shiny-py-optimize -a claude-code -gnpx skills add posit-dev/skills --skill shiny-py-optimize -a codex -ggemini skills install https://github.com/posit-dev/skills.git --path shiny/shiny-py-optimizegh skill install posit-dev/skills shiny-py-optimizegit clone --depth 1 https://github.com/posit-dev/skills /tmp/posit-dev__skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/posit-dev__skills/shiny/shiny-py-optimize ~/.claude/skills/shiny-py-optimize # Claude Code
cp -R /tmp/posit-dev__skills/shiny/shiny-py-optimize ~/.agents/skills/shiny-py-optimize # Codex, Cursor, Gemini CLI, Copilot, OpenCode