Generate D2 database diagrams from Entity Framework Core models. USE FOR: EF Core database diagram, Entity Framework Core ERD, DbContext diagram, C# entity relationship diagram, PostgreSQL schema visualization, generate .d2 file from EF Core entities, Fluent API mapping diagram, migrations-based database diagram, table relationships, owned types, many-to-many join tables, indexes and constraints.
Install
npx skills add github/awesome-copilot --skill efcore-d2-db-diagramnpx skills add github/awesome-copilot --skill efcore-d2-db-diagram -a claude-code -gnpx skills add github/awesome-copilot --skill efcore-d2-db-diagram -a codex -ggemini skills install https://github.com/github/awesome-copilot.git --path skills/efcore-d2-db-diagramgh skill install github/awesome-copilot efcore-d2-db-diagramgit clone --depth 1 https://github.com/github/awesome-copilot /tmp/github__awesome-copilot
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/github__awesome-copilot/skills/efcore-d2-db-diagram ~/.claude/skills/efcore-d2-db-diagram # Claude Code
cp -R /tmp/github__awesome-copilot/skills/efcore-d2-db-diagram ~/.agents/skills/efcore-d2-db-diagram # Codex, Cursor, Gemini CLI, Copilot, OpenCode