Microsoft Graph + Entra + Office file ops MCP for Claude. Certificate-based app-only auth via Azure Key Vault + delegated auth with persistent token cache. Covers Outlook, Teams, SharePoint, OneDrive, Planner, ToDo, OneNote, Users, Groups, Entra admin, Excel/Word/PowerPoint/Loop file ops, Search, Sites.
Add the marketplace (inside Claude Code):
/plugin marketplace add markus41/Claude-mInstall the plugin:
/plugin install ms-graph-omniIntegration with OpenAI Codex CLI for complex code generation and debugging