Design Prometheus scrape configs, bounded-label metrics, and alert rules with symptom-first PromQL; avoid cardinality fires and silent relabel collisions agents cause.
Install
npx skills add alivirgo/Major-AI-Skills --skill prometheusnpx skills add alivirgo/Major-AI-Skills --skill prometheus -a claude-code -gnpx skills add alivirgo/Major-AI-Skills --skill prometheus -a codex -ggemini skills install https://github.com/alivirgo/Major-AI-Skills.git --path skills/prometheusgh skill install alivirgo/Major-AI-Skills prometheusgit clone --depth 1 https://github.com/alivirgo/Major-AI-Skills /tmp/alivirgo__Major-AI-Skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/alivirgo__Major-AI-Skills/skills/prometheus ~/.claude/skills/prometheus # Claude Code
cp -R /tmp/alivirgo__Major-AI-Skills/skills/prometheus ~/.agents/skills/prometheus # Codex, Cursor, Gemini CLI, Copilot, OpenCode