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list-drive-item-thumbnails

Read-only

Get thumbnail sets (small 96px, medium 176px, large 800px) for a file in OneDrive/SharePoint. Returns image URLs and dimensions; URLs are short-lived.

Instructions

Collection of thumbnailSet objects associated with the item. For more information, see getting thumbnails. Read-only. Nullable.

💡 TIP: Lists thumbnail sets for a file. Each set contains small (96px), medium (176px), large (800px) thumbnails with url and dimensions. Returns empty for unsupported types (text docs). Use $select=small,medium,large or $expand=small($select=url) to fetch specific sizes. The returned URLs are short-lived — fetch the bytes immediately.

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
driveIdYesPath parameter: driveId
driveItemIdYesPath parameter: driveItemId
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
Behavior4/5

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

Annotations indicate read-only and non-destructive. Description adds key behavioral details: nullable, returns empty for unsupported types, and short-lived URLs. No contradiction with 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?

Description is concise with a clear lead sentence and a bulleted tip. Information is front-loaded and every sentence adds value, though slight redundancy exists between description and tip.

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

Completeness4/5

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

Covers main behavior, thumbnail sizes, URL lifetime, and unsupported types. Given no output schema and 13 params, the description provides sufficient context for correct invocation.

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?

All 13 parameters have schema descriptions (100% coverage). The description adds tip-level guidance on $top and $select but does not significantly augment parameter meaning beyond the schema.

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 lists thumbnailSet objects for a drive item, specifying sizes (96px, 176px, 800px) and behavior for unsupported types. It distinguishes from sibling list tools by focusing on thumbnails.

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

Usage Guidelines4/5

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

Provides explicit guidance on using $select/$expand to fetch specific sizes and notes that URLs are short-lived, advising immediate download. Does not explicitly state when not to use or name alternatives, but usage context is clear.

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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