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Softeria

Microsoft 365 MCP Server

by Softeria

get-calendar-event

get-calendar-event
Read-only

Get the properties and relationships of the specified event object. Currently, this operation returns event bodies in only HTML format.

Instructions

Get the properties and relationships of the specified event object. Currently, this operation returns event bodies in only HTML format. There are two scenarios where an app can get an event in another user's calendar: Since the event resource supports extensions, you can also use the GET operation to get custom properties and extension data in an event instance.

Input Schema

NameRequiredDescriptionDefault
expandNoNavigation properties to inline, e.g. attachments on a message or event. Only navigation properties can be expanded: expanding a non-navigation property such as a message body fails with "Parsing OData Select and Expand failed". Request ordinary fields with $select instead. Some APIs accept only one relationship per request, so prefer a single value. Some relationships support nested selection, e.g. children($select=id,name).
selectNoComma-separated fields to return, e.g. id,subject,from,receivedDateTime
eventIdYesValue for the 'eventId' path segment. Pass it under the name 'eventId', not as 'id'. Use the 'id' field of the event object as returned by Microsoft Graph.
timezoneNoIANA timezone name (e.g., "America/New_York", "Europe/London", "Asia/Tokyo") for calendar event times. If not specified, times are returned in UTC.
fetchAllPagesNoFollow @odata.nextLink and merge up to 100 pages into one response. Can return enormous payloads—only when the user explicitly needs a full export. Prefer a small $top first, then paginate or narrow with $filter/$search.
includeHeadersNoInclude response headers (including ETag) in the response metadata
excludeResponseNoExclude the full response body and only return success or failure indication
expandExtendedPropertiesNoWhen true, expands singleValueExtendedProperties on each event. Use this to retrieve custom extended properties (e.g., sync metadata) stored on calendar events.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv0.166.0
    • changedInput schema / properties / expand / description
      Previous value: -"Navigation properties to inline, e.g. attachments on a message or event. Only navigation properties can be expanded: expanding a non-navigation property such as a message body fails with \"Parsing OData Select and Expand failed\", and an unsupported value may be ignored rather than reported. Request ordinary fields with $select instead."New value: +"Navigation properties to inline, e.g. attachments on a message or event. Only navigation properties can be expanded: expanding a non-navigation property such as a message body fails with \"Parsing OData Select and Expand failed\". Request ordinary fields with $select instead. Some APIs accept only one relationship per request, so prefer a single value. Some relationships support nested selection, e.g. children($select=id,name)."
  2. Changed5 schema fields changedv0.154.2
    • addedInput schema / properties / expand / anyOf
      Added value: +[
      +  {
      +    "type": "string"
      +  },
      +  {
      +    "items": {
      +      "type": "string"
      +    },
      +    "type": "array"
      +  }
      +]
    • removedInput schema / properties / expand / items
      Removed value: -{
      -  "type": "string"
      -}
    • removedInput schema / properties / expand / type
      Removed value: -"array"
    • addedInput schema / properties / select / anyOf
      Added value: +[
      +  {
      +    "type": "string"
      +  },
      +  {
      +    "items": {
      +      "type": "string"
      +    },
      +    "type": "array"
      +  }
      +]
    • removedInput schema / properties / select / type
      Removed value: -"string"
  3. Addedv0.134.4
  4. Removedv0.131.2
  5. Addedv0.114.0
  6. Removedv0.112.2
  7. Addedv0.110.0
  8. Removedv0.108.0
  9. Changed5 schema fields changedv0.96.0
    • addedInput schema / properties / expandExtendedProperties
      Added value: +{
      +  "description": "When true, expands singleValueExtendedProperties on each event. Use this to retrieve custom extended properties (e.g., sync metadata) stored on calendar events.",
      +  "type": "boolean"
      +}
    • changedInput schema / properties / fetchAllPages / description
      Previous value: -"Automatically fetch all pages of results"New value: +"Follow @odata.nextLink and merge up to 100 pages into one response. Can return enormous payloads—only when the user explicitly needs a full export. Prefer a small $top first, then paginate or narrow with $filter/$search."
    • changedInput schema / properties / select / description
      Previous value: -"Select properties to be returned"New value: +"Comma-separated fields to return, e.g. id,subject,from,receivedDateTime"
    • removedInput schema / properties / select / items
      Removed value: -{
      -  "type": "string"
      -}
    • changedInput schema / properties / select / type
      Previous value: -"array"New value: +"string"
  10. First observedv0.31.0

TDQS

B3.1/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true, destructiveHint=false, openWorldHint=true. The description adds a concrete behavioral note that bodies come back only in HTML format, which is useful context. It does not mention paging or permission scoping, but it adds some value beyond the annotations, meriting a 3.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Three sentences that are reasonably compact, but the middle sentence dangles an incomplete thought ('two scenarios…') without enumerating them, which is filler rather than value. The HTML-format note is front-loaded well enough.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a read-only getter with full schema coverage and annotations, the description is minimally adequate. However, the dangling 'two scenarios' clause implies capabilities it never explains, leaving a real gap in completeness.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema already documents all 8 parameters, including expand, select, timezone, fetchAllPages, and eventId. The description adds no parameter-level detail beyond the schema, so the baseline of 3 is correct.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb+resource: gets properties and relationships of a specified event object. Clear about what is retrieved. It does not differentiate itself from close siblings like get-specific-calendar-event, but the resource and action are unambiguous.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description mentions 'two scenarios where an app can get an event in another user's calendar' but never enumerates them, so no actionable when-to-use guidance is delivered. There is no mention of when to prefer get-specific-calendar-event or get-calendar-view instead.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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