outlook-calendar

name

outlook-calendar

description

A digital calendar platform that lets users schedule events, manage appointments, and collaborate on meetings across devices with reminders and shared availability views. Read and write Outlook Calendar data through One: events, places, calendarpermissions, eventextensions, eventattachments, calendars and more, 561 actions with real parameter documentation. Use whenever the user asks to look something up in Outlook Calendar, create or update a record there, or build code against the Outlook Calendar API.

Outlook Calendar through One

A digital calendar platform that lets users schedule events, manage appointments, and collaborate on meetings across devices with reminders and shared availability views.

One exposes Outlook Calendar through four MCP tools. The table below carries real action ids from One's knowledge base, so for a common operation you can skip search and go straight to reading the action's parameters.

How to run an action

1. Find the action in the table below, or call search_one_platform_actions with platform outlook-calendar if it is not listed.
2. Call get_one_action_knowledge with the action id. Do this every time, including for actions in this table. The table gives you the id, not the parameters.
3. Call execute_one_action with parameters copied from that knowledge.

Never guess a parameter name, a body field, or an enum value. The knowledge has the real schema, and a guessed field is either a 400 or a silent write of the wrong thing.

Before you start

Call list_one_integrations once and confirm Outlook Calendar is connected. If it is missing, the user has not connected it: say so and point them at https://app.withone.ai rather than reaching for raw HTTP.

Each connection carries an access field. If it reports {"policy": "methods", "methods": ["GET"]} the agent is read-only here, so plan a read-only answer instead of attempting a write that will be refused.

Before a write

Creates, updates, deletes and sends land on a real Outlook Calendar account and cannot be recalled. State the action and the specific target in one line before the first write in a task, and let the user stop you. Reads need no confirmation.

Actions

Events

Action	Method	Path	Action id
Delta Changes for a Group Event’s Instances (calendarView)	GET	/groups/{{groupId}}/calendar/events/{{eventId}}/instances/microsoft.graph.delta()	conn_mod_def::GJ58DJtE3YM::rgqy2_4pSDmPE3MEW5fKgQ
Delta Changes for a User Calendar’s Calendar View	GET	/users/{{userId}}/calendars/{{calendarId}}/calendarView/microsoft.graph.delta()	conn_mod_def::GJ58NqQx9Bk::Y4WDuDjxReG2LJfIGaQ1gA
Delta Changes in a Group Calendar View	GET	/groups/{{groupId}}/calendarView/microsoft.graph.delta()	conn_mod_def::GJ58ENUrZFM::RjVIvdfPTRa0ylr1itlbbA
Delta Events in a User Calendar Group Calendar	GET	/v1.0/me/calendarGroups/{{calendarGroupId}}/calendars/{{calendarId}}/events/microsoft.graph.delta()	conn_mod_def::GMIY39w5X_k::JybV9a10SjONY_RF0CekHQ
Delta Events in My Primary Calendar View	GET	/v1.0/me/events/microsoft.graph.delta()	conn_mod_def::GMIY30c5-CU::Vyj3JdttTeuIGL7R5yC2sg
Delta Sync Events in a User Calendar (calendarView)	GET	/users/{{userId}}/calendars/{{calendarId}}/events/microsoft.graph.delta()	conn_mod_def::GJ58N91nC2c::ThVFZ4SuSLGVKhb_N9TtiQ
Delta Sync Events in a User Calendar View	GET	/users/{{userId}}/calendarGroups/{{calendarGroupId}}/calendars/{{calendarId}}/calendarView/microsoft.graph.delta()	conn_mod_def::GJ58Qf-cD04::lvruh_S4TYiakdSSw5-Yxg
Delta Sync Events in a User’s Calendar (Calendar Group CalendarView)	GET	/users/{{userId}}/calendarGroups/{{calendarGroupId}}/calendars/{{calendarId}}/events/microsoft.graph.delta()	conn_mod_def::GJ58Qf2VfDg::TW0qxs_vT3S1MpQ8Zm7w2w
Delta Sync Events in a User’s Calendar View	GET	/users/{{userId}}/calendarView/microsoft.graph.delta()	conn_mod_def::GJ58SHL8ETY::fvIcY5bHRUOh4SjxR1IFKQ

74 more Events actions are available through search.

Places

Action	Method	Path	Action id
Get a Building Level Map from a Place	GET	/places/{{placeId}}/microsoft.graph.building/map/levels/{{levelMapId}}	conn_mod_def::GJ58E6vwUeQ::ImhnAfzuRSWw-iXLO3uc4g
Get a Building Level Map Unit Count for a Place	GET	/places/{{placeId}}/microsoft.graph.building/map/levels/{{levelMapId}}/units/$count	conn_mod_def::GJ58FIavnKc::qw2okPHbThCf8Tw7_49Efg
Get a Building Level’s Fixture Count for a Place	GET	/places/{{placeId}}/microsoft.graph.building/map/levels/{{levelMapId}}/fixtures/$count	conn_mod_def::GJ58FIZPwuI::KTWbcWlWRt6oqs6d4uy-uA
Get a Building Map Footprint for a Place	GET	/places/{{placeId}}/microsoft.graph.building/map/footprints/{{footprintMapId}}	conn_mod_def::GJ58E6h5Jt8::AYMUVI94SkWNgG_MaS3wFQ
Get a Building Map Level Count for a Place	GET	/places/{{placeId}}/microsoft.graph.building/map/levels/$count	conn_mod_def::GJ58FI1QoIM::Klb2s1wFQWyu7Pis2YAmTg
Get a Building Place's Check-In Count	GET	/places/{{placeId}}/microsoft.graph.building/checkIns/$count	conn_mod_def::GJ58HIENFQI::ZNiROJtrRU6H73LLJaHwAA
Get a Building’s Map (IMDF) for a Place	GET	/places/{{placeId}}/microsoft.graph.building/map	conn_mod_def::GJ58FAnKR-w::jPdnbu5sQ6GY8BnvkiSXGw
Get a Desk's Check-In Count for a Place	GET	/places/{{placeId}}/microsoft.graph.desk/checkIns/$count	conn_mod_def::GJ58HTlNenY::zMlgt-lWS9-d7S-d7oKI8A
Get a Floor's Check-In Count for a Place	GET	/places/{{placeId}}/microsoft.graph.floor/checkIns/$count	conn_mod_def::GJ58HFdNMgc::Ricx-SHGQHuXbd3Reczxfw
Get a Place as a Room	GET	/places/{{placeId}}/microsoft.graph.room

45 more Places actions are available through search.

CalendarPermissions

Action	Method	Path	Action id
Count Calendar Permissions for a User's Calendar in a Calendar Group	GET	/v1.0/me/calendarGroups/{{calendarGroupId}}/calendars/{{calendarId}}/calendarPermissions/$count	conn_mod_def::GMIY2DXReDM::96qlUtRxQ8CGvFOaNH8yAA
Get a Calendar Permission from a User's Calendar Group Calendar	GET	/v1.0/me/calendarGroups/{{calendarGroupId}}/calendars/{{calendarId}}/calendarPermissions/{{calendarPermissionId}}	conn_mod_def::GMIY1FB16gk::IK16-bK_QuuNxJeoIIxmNw
Get a Calendar Permission from My Calendar	GET	/v1.0/me/calendars/{{calendarId}}/calendarPermissions/{{calendarPermissionId}}	conn_mod_def::GMIY08DUB9Q::jvCPWsFOTDaQQ-VNpQKTZw
Get a Group Calendar Permission	GET	/groups/{{groupId}}/calendar/calendarPermissions/{{calendarPermissionId}}	conn_mod_def::GJ58CQwdvLE::VqQV2UHISrCE1GHwlgIx0A
Get a User Calendar Permission	GET	/users/{{userId}}/calendar/calendarPermissions/{{calendarPermissionId}}	conn_mod_def::GJ58LDwpqw0::u6QKp3zOTgqkIFX2w9KLcw
Get a User Calendar Permission	GET	/users/{{userId}}/calendars/{{calendarId}}/calendarPermissions/{{calendarPermissionId}}	conn_mod_def::GJ58LEEM3Tk::qVhJK05hRQKjLNLts4t-3g
Get a User Calendar Permissions Count	GET	/users/{{userId}}/calendar/calendarPermissions/$count	conn_mod_def::GJ58LtQjBVE::thvmX8tbREiDrghnL6x9BA
Get a User Calendar’s Calendar Permission Count	GET	/users/{{userId}}/calendars/{{calendarId}}/calendarPermissions/$count	conn_mod_def::GJ58L2Cm3OE::Be6ROwwXRbKYQSBnqvoUvQ
Get a User Calendar’s Calendar Permissions Count	GET	/users/{{userId}}/calendarGroups/{{calendarGroupId}}/calendars/{{calendarId}}/calendarPermissions/$count	conn_mod_def::GJ58Pl7Qxo0::-pUxs8ZWRkWUjz6xAlqZOQ

26 more CalendarPermissions actions are available through search.

EventExtensions

Action	Method	Path	Action id
Get an Event Extension Count for a User	GET	/users/{{userId}}/calendar/events/{{eventId}}/extensions/$count	conn_mod_def::GJ58LuLoH0E::DwRglgEfSumPyVdjw2GOHA
Get an Event Extension Count for a User's Calendar Group Calendar Event	GET	/users/{{userId}}/calendarGroups/{{calendarGroupId}}/calendars/{{calendarId}}/events/{{eventId}}/extensions/$count	conn_mod_def::GJ58PnogCTM::K24OiT6ZSNmWZmJ2zwIwYw
Get an Event Extension Count in a Group	GET	/groups/{{groupId}}/events/{{eventId}}/extensions/$count	conn_mod_def::GJ58D4sqqq8::kJfUHR51SnmY_I9yZJlEfQ
Get an Event Extension for a User (in a Calendar Group Calendar)	GET	/users/{{userId}}/calendarGroups/{{calendarGroupId}}/calendars/{{calendarId}}/events/{{eventId}}/extensions/{{extensionId}}	conn_mod_def::GJ58Pn2hxFI::QmRHFtCBT8ugW6MQGHAtuw
Get an Event Extension for a User's Calendar Event	GET	/users/{{userId}}/calendars/{{calendarId}}/events/{{eventId}}/extensions/{{extensionId}}	conn_mod_def::GJ58LhaTr8Q::Qr0DPLs2T2-uCLzCOQLJUw
Get an Event Extension for the Signed-in User	GET	/v1.0/me/calendar/events/{{eventId}}/extensions/{{extensionId}}	conn_mod_def::GMIY1d0FRTg::7urdFzOuSNOhXBzwWeeiPg
Get an Event Extension for the Signed-in User	GET	/v1.0/me/events/{{eventId}}/extensions/{{extensionId}}	conn_mod_def::GMIY1l1FoMc::5T6E3aRjSYCIGLN9DklKEA
Get an Event Extension from My Calendar Group Calendar Event	GET	/v1.0/me/calendarGroups/{{calendarGroupId}}/calendars/{{calendarId}}/events/{{eventId}}/extensions/{{extensionId}}	conn_mod_def::GMIY1mEY-gA::J42OpSCnTfGPxVwJPWdlYw
Get an Event Extension from the Signed-in User's Calendar	GET	/v1.0/me/calendars/{{calendarId}}/events/{{eventId}}/extensions/{{extensionId}}

21 more EventExtensions actions are available through search.

EventAttachments

Action	Method	Path	Action id
Get a User Event Attachment (in a Calendar Group Calendar)	GET	/users/{{userId}}/calendarGroups/{{calendarGroupId}}/calendars/{{calendarId}}/events/{{eventId}}/attachments/{{attachmentId}}	conn_mod_def::GJ58OuhX-eo::t6ZWpJ7zQLC5Se8bkH5kEg
Get an Event Attachment Count for a Group Event	GET	/groups/{{groupId}}/calendar/events/{{eventId}}/attachments/$count	conn_mod_def::GJ58Cnm5EOc::mdScDlPTST-f1M3I0XuuQg
Get an Event Attachment Count for a User	GET	/users/{{userId}}/events/{{eventId}}/attachments/$count	conn_mod_def::GJ58RRDfZ6Y::d2DqopANQt2RTlDC-RRs7Q
Get an Event Attachment Count for a User Calendar Event	GET	/users/{{userId}}/calendars/{{calendarId}}/events/{{eventId}}/attachments/$count	conn_mod_def::GJ58L5hhMrs::4wHycAa5Qmufx-mWa8sgVw
Get an Event Attachment for a User	GET	/users/{{userId}}/events/{{eventId}}/attachments/{{attachmentId}}	conn_mod_def::GJ58RBvqWF0::7QslbdM-S6C1uRQ--jCo4Q
Get an Event Attachment for the Signed-in User	GET	/v1.0/me/events/{{eventId}}/attachments/{{attachmentId}}	conn_mod_def::GMIY0rFH7Ao::DGZugptSTdaDXhHaXgFqnQ
Get an Event Attachment from a Calendar	GET	/v1.0/me/calendars/{{calendarId}}/events/{{eventId}}/attachments/{{attachmentId}}	conn_mod_def::GMIY0iaVNMA::UoUs8f4CT62EON5oe2SbHQ
Get an Event Attachment from a Signed-in User's Calendar Group Calendar Event	GET	/v1.0/me/calendarGroups/{{calendarGroupId}}/calendars/{{calendarId}}/events/{{eventId}}/attachments/{{attachmentId}}	conn_mod_def::GMIY0rWkY3w::kZMrhCKTTQW6p28D_ydQOQ
Get the Count of an Event's Attachments (in a User's Calendar Group Calendar)	GET	/users/{{userId}}/calendarGroups/{{calendarGroupId}}/calendars/{{calendarId}}/events/{{eventId}}/attachments/$count

19 more EventAttachments actions are available through search.

Calendars

Action	Method	Path	Action id
Count Calendars in a Calendar Group for the Signed-in User	GET	/v1.0/me/calendarGroups/{{calendarGroupId}}/calendars/$count	conn_mod_def::GMIY2D3U5Gk::zVPHeBm9TgWmVCTP1Y8fAw
Get a Calendar for the Signed-in User	GET	/v1.0/me/calendars/{{calendarId}}	conn_mod_def::GMIY1FXNzT8::fuO9ogiwSImi7lShZhJ7Yg
Get a User Calendar for an Event	GET	/users/{{userId}}/calendars/{{calendarId}}/events/{{eventId}}/calendar	conn_mod_def::GJ58K48WrjA::Dtbo30YEQ4e30dTa3ficrQ
Get a User Calendar Group Calendar Count	GET	/users/{{userId}}/calendarGroups/{{calendarGroupId}}/calendars/$count	conn_mod_def::GJ58Pzn02-s::UzsDZvmSTRqwwXwtPV5THQ
Get a User Calendar in a Calendar Group	GET	/users/{{userId}}/calendarGroups/{{calendarGroupId}}/calendars/{{calendarId}}	conn_mod_def::GJ58PZvFAXU::C5mBJSYFS0-62k_CcxM3uw
Get a User Event's Calendar	GET	/users/{{userId}}/events/{{eventId}}/calendar	conn_mod_def::GJ58REmpEfU::yms-NCuUSnCLIlTUp8BEbA
Get a User’s Calendar	GET	/users/{{userId}}/calendars/{{calendarId}}	conn_mod_def::GJ58LEaiIHY::eFNbcTkhQUOdOo3sFBdK2g
Get a User's Calendar Count	GET	/users/{{userId}}/calendars/$count	conn_mod_def::GJ58Mwp_rsw::7Mq2ZBvlRgKgn1ue9QDnrQ
Get a User's Event Calendar (from a Calendar Group)	GET	/users/{{userId}}/calendarGroups/{{calendarGroupId}}/calendars/{{calendarId}}/events/{{eventId}}/calendar	conn_mod_def::GJ58Oyo4e04::QlrTNvY_SampL7tEMAhi2A
Get a User's Primary Calendar	GET	/users/{{userId}}/calendar	conn_mod_def::GJ58K320uPc::3KPUI_w-QuGXf48k79Oudg

16 more Calendars actions are available through search.

CalendarEvents

Action	Method	Path	Action id
Delta Calendar Events in a User Calendar	GET	/v1.0/me/calendars/{{calendarId}}/events/microsoft.graph.delta()	conn_mod_def::GMIY39C_Zus::f0YqbOZ_Tzi_jt6FfhYKHA
Delta Calendar Events in the Signed-In User's Primary Calendar View	GET	/v1.0/me/calendar/events/microsoft.graph.delta()	conn_mod_def::GMIY31QtqvI::RKQpNMY9QVKFLfUb-HixYQ
Get a User Calendar Events Count	GET	/users/{{userId}}/calendar/events/$count	conn_mod_def::GJ58L48cOEU::rYldTBWHT66wB9--TEOdfA
Get a User’s Calendar Event	GET	/users/{{userId}}/calendar/events/{{eventId}}	conn_mod_def::GJ58LQFyhwg::heT-BCtsQu6HM9EfPxllrg
Get Count of Calendar Events	GET	/v1.0/me/calendar/events/$count	conn_mod_def::GMIY2VIiGo0::Az-M0KXwTH2QvHWIC4sZJw
Get Event Count for a Signed-In User's Calendar in a Calendar Group	GET	/v1.0/me/calendarGroups/{{calendarGroupId}}/calendars/{{calendarId}}/events/$count	conn_mod_def::GMIY2Fn-DUA::um8bQn-USi-xsa7fWkFKXw
Get Event Count for My Calendar	GET	/v1.0/me/calendars/{{calendarId}}/events/$count	conn_mod_def::GMIY2bKir8w::RPeMAn2LSkyTML-tYVWdpQ
Accept a User Calendar Event	POST	/users/{{userId}}/calendars/{{calendarId}}/events/{{eventId}}/microsoft.graph.accept	conn_mod_def::GJ58ME3Phew::jYDqiTO3TaSnPHus-0Jk0A
Accept a User's Calendar Event Invitation	POST	/users/{{userId}}/calendar/events/{{eventId}}/microsoft.graph.accept	conn_mod_def::GJ58ME1EGgM::otZYMIApTz6vVowItdNv3Q
Accept an Event in a Calendar	POST	/v1.0/me/calendars/{{calendarId}}/events/{{eventId}}/microsoft.graph.accept	conn_mod_def::GMIY2cTKoZQ::6Ad3ITA7TceVX2rwD20liw

14 more CalendarEvents actions are available through search.

CheckIns

Action	Method	Path	Action id
Get a Floor Place’s Check-In (by Calendar Event)	GET	/places/{{placeId}}/microsoft.graph.floor/checkIns/{{checkInClaimCalendarEventId}}	conn_mod_def::GJ58G9EVXA4::4jAOfvRnQNOjjnGE5eiQiA
Get a Room List Workspace Check-In Count	GET	/places/{{placeId}}/microsoft.graph.roomList/workspaces/{{workspaceId}}/checkIns/$count	conn_mod_def::GJ58Jenm7IQ::O3Lps5O4Q6CbH7VXVFAYRQ
Get a Room's Check-In Count in a Room List Place	GET	/places/{{placeId}}/microsoft.graph.roomList/rooms/{{roomId}}/checkIns/$count	conn_mod_def::GJ58JCxbsls::sCSKzJebQIKoZI3TJ8PyHA
Get a Workspace Check-In for a Room List Place	GET	/places/{{placeId}}/microsoft.graph.roomList/workspaces/{{workspaceId}}/checkIns/{{checkInClaimCalendarEventId}}	conn_mod_def::GJ58Jfw6ivo::ZUJAz8QbSke3WCqpN148_Q
List a Room's Check-Ins (from a Place Room List)	GET	/places/{{placeId}}/microsoft.graph.roomList/rooms/{{roomId}}/checkIns	conn_mod_def::GJ58JIa_qlM::yhOb_SQxTHmSQErorUPOBA
List a Workspace's Check-Ins for a Room List Place	GET	/places/{{placeId}}/microsoft.graph.roomList/workspaces/{{workspaceId}}/checkIns	conn_mod_def::GJ58Jfhyd_w::Risw4MBgTlqKeMUdglflSQ

12 more CheckIns actions are available through search.

This lists 90 of 561 actions. For anything not here, call search_one_platform_actions with platform outlook-calendar. The full catalog is at https://www.withone.ai/knowledge/outlook-calendar.

When a call fails

The error comes from Outlook Calendar, not from One. A 400 or 422 means your parameters do not match the schema, so re-read the knowledge and fix the field. A 401 or 403 means the connection needs re-authorizing, which no retry will fix. A 404 means the id is not on this account. A 429 means slow down. Never retry a write more than once: the first attempt may have landed.

Full catalog: https://www.withone.ai/knowledge/outlook-calendar

Integration knowledge by One (withone.ai), licensed under One-Knowledge-1.0. Attribution must be preserved in derivative works.