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list-calendar-events

Read-only

List calendar events from your mailbox. Returns single instances and series masters for recurring events.

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.
searchNoKQL search query — wrap value in double quotes. Cannot combine with $filter.
filterNoOData filter expression. Add $count=true for advanced filters (flag/flagStatus, contains()). Cannot combine with $search.
countNoSet true to enable advanced query mode (ConsistencyLevel: eventual). Required for complex $filter on flag/flagStatus or contains().
orderbyNoSort expression, e.g. receivedDateTime desc
selectNoComma-separated fields to return, e.g. id,subject,from,receivedDateTime
expandNoExpand related entities
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
timezoneNoIANA timezone name (e.g., "America/New_York", "Europe/London", "Asia/Tokyo") for calendar event times. If not specified, times are returned in UTC.
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 indicate readOnlyHint=true and destructiveHint=false, so the description adds incremental value by disclosing that event bodies are returned only in HTML format. It also clearly states the behavior regarding recurring events (returns seriesMaster only). This goes beyond what annotations provide, though it could mention pagination behavior or response structure.

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

Conciseness4/5

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

The description is relatively concise, with a clear front-loaded purpose and a bolded tip for key behavioral guidance. While it contains multiple sentences, each sentence adds value. It could be slightly more streamlined, but it is efficient for the information conveyed.

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

Completeness5/5

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

Given the complexity (13 parameters, no output schema, rich annotations), the description covers essential behavioral nuances (recurring event expansion, HTML format) and provides clear usage context. It compensates for the lack of output schema by explaining the return type (event objects). The tool is well-defined for an agent to use correctly.

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?

The input schema has 100% description coverage, with each parameter well-documented (e.g., top, skip, search, filter). The description itself does not add further parameter-level meaning; it focuses on tool behavior. Since the schema already does the heavy lifting, a baseline score of 3 is appropriate.

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 the tool gets a list of event objects in the user's mailbox. It differentiates from sibling tools like get-calendar-view and get-calendar-event-instances by explicitly noting that it returns series masters and does not expand recurring events. The verb 'list' and resource 'calendar events' are specific and unambiguous.

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?

The description provides explicit guidance on when to use this tool vs. alternatives. It warns that it does NOT expand recurring events and recommends get-calendar-view for individual occurrences. This directly helps the agent choose the correct tool. The tip is prominently placed and uses bold text for emphasis.

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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