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List Rack Storage Items

hudu_list_rack_storage_items
Read-onlyIdempotent

List rack storage items in Hudu using filters for side, status, asset ID, unit positions, role, or timestamps. Returns every matching mounted equipment record with its rack placement details.

Instructions

List rack storage items in Hudu. A rack storage item is one thing mounted in a rack: it points at the Hudu asset it represents, occupies the units from start_unit to end_unit on one side of the rack, and carries its own power figures. The rack itself is a rack storage — use the hudu_*_rack_storage tools for the cabinet.

Read this before answering a question about a specific rack: the API documents no way to list the items in one. The item schema has no rack field, and none of the filters scope to a rack — rack_storage_role_id filters by role, which is a classification, not the cabinet. The documented filters are role, asset, start_unit, end_unit, status, side and the two timestamps, all of them instance-wide. If you are asked what is in rack 12, say this API does not expose it rather than presenting an unscoped list as that rack's contents. It is worth reading one record with hudu_get_rack_storage_item to see whether your Hudu version returns a rack reference the published schema omits, but do not assume one is there.

To go the other way — from a device to where it is racked — filter by asset_id, which is the one filter that ties an item to something you can identify elsewhere in Hudu.

This endpoint documents neither page nor page_size, so this tool sends neither and Hudu answers with everything matching in one response. The envelope reports page_was_full: false and next_page: null accordingly — there is no second page to ask for, and what you get back is the complete set for the filters given. If the result comes back marked truncated, that is this server trimming the response to fit its output budget, not the end of the data; narrow the filters or use fields to see the rest.

Returns an object with items plus pagination facts. Note that the Hudu API returns no total count for any collection, so page_was_full is the only honest signal that more records exist — read pagination_note before concluding a list is complete.

Operation class: Read.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
sideNoReturn only items mounted on this face: the filter documents the strings "Front" and "Rear". Note that the create and update body documents the same field as an integer, so the value you filter with is not the value you write.
fieldsNoReturn only these top-level fields on each record. Use it to keep large lists small — e.g. ["id","name","company_id"]. Unknown field names are ignored.
statusNoReturn only items with this integer status. No legal values are documented.
asset_idNoReturn only items representing this Hudu asset, by numeric asset id from hudu_list_assets. This is how you find where a known device is racked.
end_unitNoReturn only items whose end unit equals this value exactly.
created_atNoISO-8601 range as "start,end". Either side may be omitted — "2026-01-01T00:00:00Z," means everything since that moment, ",2026-01-01T00:00:00Z" everything before it. A bare timestamp with no comma matches that exact moment.
start_unitNoReturn only items whose start unit equals this value exactly.
updated_atNoISO-8601 range as "start,end". Either side may be omitted — "2026-01-01T00:00:00Z," means everything since that moment, ",2026-01-01T00:00:00Z" everything before it. A bare timestamp with no comma matches that exact moment.
response_formatNoOutput shape. 'json' (default) is compact and machine-readable; 'markdown' is easier for a person to read but larger.json
rack_storage_role_idNoReturn only items holding this rack storage role. A role is a classification of the mounted item, not the rack it is in — this does not list the contents of a rack.
Behavior5/5

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

Annotations already declare readOnlyHint=true, openWorldHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is covered. The description goes far beyond by explaining the API's lack of a rack-scoped filter, the absence of pagination parameters, the meaning of page_was_full versus truncated, the missing total count, and the side filter's value mismatch with create/update. This is rich, non-obvious behavioral context that an agent needs to use the tool correctly.

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

Conciseness5/5

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

The description is long but every sentence earns its place—it covers purpose, critical caveats, pagination behavior, and return shape without fluff. It's front-loaded with the core action, then the most important warning, then pagination and return details. The structure is clear and scannable, with appropriate use of paragraphs for distinct concerns.

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?

There is no output schema, so the description appropriately explains the return shape ('items' plus pagination facts) and the key pagination signals (page_was_full, truncated, no total count). It also addresses edge cases like unscoped list results and version-specific behavior. For a 10-parameter tool with no output schema, this is exceptionally complete.

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 the baseline is 3. The description adds meaningful context: asset_id is pointed to as the filter for finding where a device is racked, rack_storage_role_id is clarified as a classification not a rack, side is noted as having a different value in create/update, and the timestamp filters' comma-range semantics are explained in the schema itself. These additions push it above baseline, though the description doesn't enumerate every parameter.

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 opens with a specific verb and resource ('List rack storage items in Hudu') and then precisely defines what a rack storage item is, distinguishing it from the rack storage cabinet itself. It explicitly names the sibling tools for the cabinet (hudu_*_rack_storage tools), making the scope 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 gives explicit guidance on when not to use this tool: when asked about contents of a specific rack, since the API does not expose that. It also directs users to hudu_get_rack_storage_item to check for a rack reference, and advises using asset_id to go from device to rack. This is model behavioral guidance with clear exclusions and alternatives.

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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