Best Workplace & Productivity MCP servers for AI agents.

Both major suites are well covered. Google Workspace spans Gmail, Calendar, Drive, Docs, Sheets, Slides, and Contacts from one server, while Google Workspace MCP Server takes a deliberately curated approach — 41 tools across the same surface, on the theory that a tighter tool list keeps agents accurate and context lean. On the Microsoft side, Outlook MCP covers personal accounts with 62 tools across mail, calendar, contacts, to-dos, and drafts, and Microsoft 365 Calendar goes deep on Graph-based calendaring: list, create, update, respond, free/busy.

The tool-count difference isn't trivia. Every tool definition consumes context on every turn, and agents pick wrong tools more often from crowded lists — a curated 41-tool server can outperform an exhaustive one in practice.

The category's quiet strength is what works without a cloud suite. caldav-mcp — the most-starred server here — speaks CalDAV, the open calendar standard, so it covers Fastmail, Nextcloud, and any self-hosted calendar with list, create, update, and delete operations. calendarmcp drives macOS Calendar.app directly via AppleScript. Microsoft Office edits Word documents, Excel workbooks, and PowerPoint files as files — no Microsoft 365 subscription in the loop.

There's specialist depth, too: Temporal Cortex Calendar MCP offers 18 deterministic calendar tools covering contact resolution, availability, and booking — determinism being the property you want when an agent commits you to meetings — and hebcal handles Hebrew calendar logic, the kind of niche correctness generic date tools fumble.

The proven workflows are inbox triage (classify, draft replies, surface what needs a human), schedule negotiation (check free/busy, propose times, book), and document assembly (turn notes into a formatted deck or workbook). All three require write access to personal data, so scope deliberately: grant calendar read before calendar write, prefer servers whose mutating tools are clearly named, and use per-service servers (a calendar-only server like Microsoft 365 Calendar) when the agent's job doesn't need mail.

Check OAuth carefully on suite connectors — some target personal accounts (Outlook MCP explicitly does), and work accounts may require admin consent your IT team has opinions about.

Essentially everything in this category is open source and free to self-host, and the data layer (your mailbox, your calendar) is something you already pay for elsewhere. Where x402 pricing enters is hosted convenience — maintainers who run managed endpoints, handle the OAuth dance, and keep up with Google and Microsoft API churn can claim their Loomal listing and charge per call in USDC from $0.01, settled on Base, paid automatically by the calling agent. Every listing below links to its marketplace page; claimed ones show live tool lists.