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list-calendar-view-delta

list-calendar-view-delta
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Retrieve events added, deleted, or updated in a calendar date range. Enables incremental sync of calendar events without refetching all data.

Instructions

Get a set of event resources that have been added, deleted, or updated in a calendarView (a range of events defined by start and end dates) of the user's primary calendar. Typically, synchronizing events in a calendarView in a local store entails a round of multiple delta function calls. The initial call is a full synchronization, and every subsequent delta call in the same round gets the incremental changes (additions, deletions, or updates). This allows you to maintain and synchronize a local store of events in the specified calendarView, without having to fetch all the events of that calendar from the server every time.

đź’ˇ TIP: Incremental sync of events within a time window. Required query params on first call: startDateTime, endDateTime (ISO 8601). Returns events in the window plus @odata.deltaLink; subsequent calls with that link return only changes. Expands recurring events to individual occurrences (unlike list-calendar-events-delta which returns the series master). Use this for calendar UIs showing a week/month view.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
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
endDateTimeYesThe end date and time of the time range in the function, represented in ISO 8601 format. For example, 2019-11-08T20:00:00-08:00
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.
startDateTimeYesThe start date and time of the time range in the function, represented in ISO 8601 format. For example, 2019-11-08T20:00:00-08:00
includeHeadersNoInclude response headers (including ETag) in the response metadata
excludeResponseNoExclude the full response body and only return success or failure indication
Behavior5/5

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

Description adds significant behavioral context beyond annotations: it discloses that expanding recurring events to occurrences, returns deltaLink, and works on primary calendar. No contradictions with readOnlyHint and destructiveHint annotations.

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?

Well-structured with a clear first sentence and a tip section. Informative but could be slightly more concise; however, every sentence serves a purpose.

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?

Covers key aspects: initial params, deltaLink, recurring expansion, use case, and fetchAllPages behavior. No output schema but adequately describes return value (events + deltaLink).

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

Parameters4/5

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

Schema coverage is 100%, so baseline is 3. Description adds value by explaining the process for required start/end date parameters and the role of deltaLink, which goes beyond individual parameter descriptions.

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?

Clearly states the tool gets added/deleted/updated events in a calendarView of the primary calendar. Differentiates from sibling list-calendar-events-delta by noting it expands recurring events to individual occurrences.

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?

Explains the delta sync process: initial call with start/end dates, subsequent calls with deltaLink. Provides tip for incremental sync within time window and recommends use for calendar UIs showing week/month views. Contrasts with alternative 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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