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list-drive-item-thumbnails

Read-only

Retrieve thumbnail sets for a drive item (file) including small, medium, and large sizes. Returns URLs and dimensions for each thumbnail.

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
Behavior5/5

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

Beyond annotations (readOnlyHint=true, destructiveHint=false), the description discloses that the tool returns empty for unsupported types (text docs), that URLs are short-lived, and that it is nullable. This provides rich behavioral context.

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 concise with a clear first sentence and a well-organized tip. It wastes no words, though the tip is somewhat lengthy but valuable.

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?

Given no output schema and 13 parameters, the description adequately explains what the tool returns (sizes, dimensions, URL behavior). It covers key aspects but could mention pagination or nextLink handling, though those are documented in parameters.

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 coverage is 100%, so baseline is 3. The description adds little parameter-specific meaning beyond the schema, only referencing $select and $expand in a tip, which are already defined in 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 it is a collection of thumbnailSet objects for a drive item, and lists the specific sizes (96px, 176px, 800px) with url and dimensions. It distinguishes itself from sibling tools as the only thumbnail-specific list operation.

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?

The description provides tips on using $select and $expand to fetch specific sizes, and warns that URLs are short-lived. However, it does not explicitly guide when to use this tool versus alternative list tools, though noting unsupported types helps.

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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