Migrates Entity Framework 6 EDMX-based models (Database-First/Model-First) to EF Core Code-First. Use when upgrading projects containing .edmx files, .Context.tt templates, EntityClient connection strings, or ObjectContext references. Triggers for "migrate EDMX", "convert EDMX to code first", "EF6 to EF Core", "remove EDMX", "database first to code first", and "scaffold DbContext".
Install
npx skills add microsoft/upgrade-agent-plugins --skill migrating-edmx-to-code-firstnpx skills add microsoft/upgrade-agent-plugins --skill migrating-edmx-to-code-first -a claude-code -gnpx skills add microsoft/upgrade-agent-plugins --skill migrating-edmx-to-code-first -a codex -ggemini skills install https://github.com/microsoft/upgrade-agent-plugins.git --path plugins/upgrade-agent/upgrade/dotnet/skills/lazy/data/migrating-edmx-to-code-firstgh skill install microsoft/upgrade-agent-plugins migrating-edmx-to-code-firstgit clone --depth 1 https://github.com/microsoft/upgrade-agent-plugins /tmp/microsoft__upgrade-agent-plugins
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/microsoft__upgrade-agent-plugins/plugins/upgrade-agent/upgrade/dotnet/skills/lazy/data/migrating-edmx-to-code-first ~/.claude/skills/migrating-edmx-to-code-first # Claude Code
cp -R /tmp/microsoft__upgrade-agent-plugins/plugins/upgrade-agent/upgrade/dotnet/skills/lazy/data/migrating-edmx-to-code-first ~/.agents/skills/migrating-edmx-to-code-first # Codex, Cursor, Gemini CLI, Copilot, OpenCode