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Tools reference

Calendar

Every Calendar tool, with the scope it needs, its arguments and the API operation it calls.

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9 tools

Delete calendar connections

Destructive

atlas_calendar_connections_delete

Disconnect one calendar connection owned by the caller by id, stopping any provider watches/subscriptions. Idempotent per MCP call.

Scope
calendar:write
Calls
DELETE /v1/calendar/connections/{id}
Example prompt
Disconnect my personal Google calendar from Atlas.

Arguments

FieldTypeRequiredDescription
idstringYesCalendar connection id to disconnect.

List calendar connections

Read only

atlas_calendar_connections_list

List the caller-owned calendar connections, including provider, account email, display name, and token-expiry metadata.

Scope
calendar:read
Calls
GET /v1/calendar/connections
Example prompt
Show me my connected calendars in Atlas.

Arguments

This tool takes no arguments.

List calendar events

Read only

atlas_calendar_events_list

List the caller external calendar events overlapping an ISO datetime window (start inclusive, end exclusive) across every connected calendar, with attendees, RSVP, and reminder metadata.

Scope
calendar:read
Calls
GET /v1/calendar/events
Example prompt
What meetings do I have on my calendars next week?

Arguments

FieldTypeRequiredDescription
startstring (date-time)YesInclusive window start as an ISO 8601 datetime, e.g. "2026-06-01T00:00:00Z".
endstring (date-time)YesExclusive window end as an ISO 8601 datetime; must be after start.

List calendar external tasks

Read only

atlas_calendar_external_tasks_list

List the caller external tasks (Google Tasks) aggregated across every connected Google calendar, sorted open-first then by due date.

Scope
calendar:read
Calls
GET /v1/calendar/external-tasks
Example prompt
Show my Google Tasks alongside my Atlas work.

Arguments

This tool takes no arguments.

List calendar holidays

Read only

atlas_calendar_holidays_list

List public holidays for a given year and optional ISO country code, falling back to the tenant calendar country setting when omitted.

Scope
calendar:read
Calls
GET /v1/calendar/holidays
Example prompt
List the public holidays in the US for 2026.

Arguments

FieldTypeRequiredDescription
yearintegerYesCalendar year to fetch public holidays for.
countryCodestringNoISO 3166-1 alpha-2 country code; defaults to the tenant calendar setting.

List calendar providers

Read only

atlas_calendar_providers_list

Report which external calendar providers (Google, Microsoft) are configured and connectable in this environment.

Scope
calendar:read
Calls
GET /v1/calendar/providers
Example prompt
Which calendar providers can I connect to Atlas?

Arguments

This tool takes no arguments.

Get calendar settings

Read only

atlas_calendar_settings_get

Read the tenant-wide calendar preferences: the holiday-catalog country code and the set of weekday indices treated as the weekend.

Scope
calendar:read
Calls
GET /v1/calendar/settings
Example prompt
What country and weekend days is our Atlas calendar configured for?

Arguments

This tool takes no arguments.

Update calendar settings

Changes data

atlas_calendar_settings_update

Update the tenant-wide calendar preferences - the holiday country code and optional weekend-day indices. Idempotent per MCP call.

Scope
calendar:write
Calls
PUT /v1/calendar/settings
Example prompt
Switch our Atlas calendar to the UK holiday catalog.

Arguments

FieldTypeRequiredDescription
countryCodestringYesISO 3166-1 alpha-2 country code driving the holiday catalog, e.g. "US".
weekendDaysarray of integerNoDay-of-week indices (0=Sunday .. 6=Saturday) treated as the weekend.

Sync calendar tasks

Changes data

atlas_calendar_tasks_sync

Push an Atlas task as an event to every connected calendar for the caller, returning per-provider success/failure. Idempotent per MCP call.

Scope
calendar:write
Calls
POST /v1/calendar/sync-task/{taskId}
Example prompt
Add task tsk_a1b2c3 to my Google Calendar.

Arguments

FieldTypeRequiredDescription
taskIdstringYesAtlas task id to push to every connected calendar.