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uc_volume_get

Read-only

Retrieve details of a specific Unity Catalog volume using its full name in the format catalog.schema.volume.

Instructions

Get a single volume (GET /api/2.1/unity-catalog/volumes/{full_name}).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
full_nameYesVolume full name (catalog.schema.volume)

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

Annotations already indicate readOnlyHint=true. The description adds the HTTP method and endpoint but no additional behavioral details such as error handling or permissions. With annotations, the bar is lower; the description provides minimal extra context.

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?

Extremely concise, single sentence that front-loads the action. No unnecessary words.

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?

For a simple get tool with one parameter and an existing output schema (not shown but present), the description is adequate. It lacks prerequisites or typical use cases, but the completeness is high given the simplicity.

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 already documents the single parameter (full_name) with a clear description. The tool description does not add any further semantics. Baseline 3 due to 100% schema coverage.

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 'Get a single volume', specifying the verb and resource, and includes the exact API endpoint. It distinguishes from sibling tools like uc_volume_list and uc_volume_create.

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

Usage Guidelines2/5

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

No guidance on when to use this tool vs. alternatives like uc_volume_list. Does not mention prerequisites or context for usage.

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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