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Head to head

Outlook Assistant vs Microsoft 365 Calendar

Same numbers we show everywhere else, lined up. Ratings come from users, the grade comes from our scanner, adoption comes from public registries.

Outlook Assistantio.github.littlebearapps/outlook-assistant
A
No reviews yet

Microsoft Outlook MCP server — 22 tools for email, calendar, contacts, and mailbox management.

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Microsoft 365 Calendario.github.mindstone/mcp-server-microsoft-calendar
A
No reviews yet

Microsoft 365 Outlook calendar via Graph: list, get, create, update, respond, free/busy.

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The short version

Neither has been reviewed yet, so the comparison rests on the scan and the public usage numbers. The safety scan favours Microsoft 365 Calendar (94/100 against 85).

 Outlook AssistantMicrosoft 365 Calendar
User ratingNo reviews yetNo reviews yet
Safety gradeA85/100A94/100
AdoptionGrowingGrowing
GitHub stars3712
Downloads / week32878
Runs whereYour machine (local)Your machine (local)
Gateway-readyNoNo
Tools2210
Write actions44
Price per callFreeFree
LicenceMITNOASSERTION
Last release2026-09-092026-09-13
CategoryEmailEmail

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