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list-calendar-events

list-calendar-events
Read-only

Retrieve calendar events from a user's mailbox, including single meetings and series masters. For recurring event occurrences, use get-calendar-view.

Instructions

Get a list of event objects in the user's mailbox. The list contains single instance meetings and series masters. To get expanded event instances, you can get the calendar view, or get the instances of an event. Currently, this operation returns event bodies in only HTML format. There are two scenarios where an app can get events in another user's calendar:

💡 TIP: WARNING: Does NOT expand recurring events — only returns seriesMaster. Use get-calendar-view instead to see individual occurrences within a date range.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
topNoPage size (Graph $top). Start small (e.g. 5–15) so responses fit the model context; raise only if needed. Use $select to return fewer fields per item. For more rows, use @odata.nextLink from the response instead of a very large $top.
skipNoItems to skip for pagination. Not supported with $search.
countNoSet true to enable advanced query mode (ConsistencyLevel: eventual). Required for complex $filter on flag/flagStatus or contains().
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", and an unsupported value may be ignored rather than reported. Request ordinary fields with $select instead.
filterNoOData filter expression. Add $count=true for advanced filters (flag/flagStatus, contains()). Cannot combine with $search.
searchNoKQL search query — wrap value in double quotes. Cannot combine with $filter.
selectNoComma-separated fields to return, e.g. id,subject,from,receivedDateTime
orderbyNoSort expression, e.g. receivedDateTime desc
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.
Behavior4/5

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

Annotations already cover readOnlyHint and destructiveHint, so the description adds value by disclosing that event bodies are only HTML format and that recurring events are not expanded. These are meaningful behavioral traits beyond the annotations. No contradiction detected.

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

Conciseness2/5

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

The description is muddled: it contains an incomplete sentence about 'two scenarios' and a redundant warning (mentions seriesMaster twice). Key information about the tool's limitations is embedded in a TIP/WARNING block rather than cleanly structured. It lacks front-loading and wastes space.

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?

The description does not clarify whether it operates on the default calendar or all calendars, and the incomplete 'two scenarios' sentence leaves scope unclear. It also omits details like pagination behavior beyond parameter docs. While the schema covers many aspects, the description leaves gaps for an agent deciding which calendar-related tool to use.

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% with detailed parameter explanations, so the description adds little beyond the schema. The baseline of 3 applies because the schema carries the full burden; the description doesn't provide any additional parameter-level insight.

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

Purpose5/5

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

The description clearly states it gets a list of event objects in the user's mailbox, and distinguishes itself from alternatives by pointing to get-calendar-view for expanded recurring instances and noting it returns only series masters. This is a specific verb+resource that differentiates it from sibling tools like list-specific-calendar-events.

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

Usage Guidelines5/5

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

Directly instructs when to use alternatives: 'To get expanded event instances, you can get the calendar view' and explicitly warns 'Use get-calendar-view instead to see individual occurrences within a date range.' This gives an agent clear context for selecting the right tool.

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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