Model MongoDB documents and compound indexes, tune read/write concern and TLS connection strings, run safe aggregations, and avoid backup/restore and majority-write traps on small replica sets.
Install
npx skills add alivirgo/Major-AI-Skills --skill mongodbnpx skills add alivirgo/Major-AI-Skills --skill mongodb -a claude-code -gnpx skills add alivirgo/Major-AI-Skills --skill mongodb -a codex -ggemini skills install https://github.com/alivirgo/Major-AI-Skills.git --path skills/mongodbgh skill install alivirgo/Major-AI-Skills mongodbgit 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/mongodb ~/.claude/skills/mongodb # Claude Code
cp -R /tmp/alivirgo__Major-AI-Skills/skills/mongodb ~/.agents/skills/mongodb # Codex, Cursor, Gemini CLI, Copilot, OpenCode