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uc_schema_get

Read-only

Retrieve details of a specific schema in Unity Catalog by providing its full name (catalog.schema).

Instructions

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

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
full_nameYesSchema full name (catalog.schema)

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior3/5

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

The annotation readOnlyHint=true already indicates a read operation. The description adds the HTTP method GET, confirming idempotency. However, no further behavioral details (e.g., error handling, required permissions) are disclosed beyond what annotations provide.

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 a single, well-structured sentence containing the core purpose and a REST endpoint. No unnecessary words or redundancy.

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?

The tool is simple with one parameter fully described in schema and an output schema present. The description might briefly mention the response content, but given the output schema exists, it is adequately complete for agent 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?

The input schema has 100% coverage for the only parameter 'full_name', with a description 'Schema full name (catalog.schema)'. The tool description does not add additional meaning or format expectations 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 'Get a single schema' with a specific verb and resource. It also provides the REST API endpoint. The 'single' distinction differentiates it from sibling uc_schema_list.

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

Usage Guidelines3/5

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

The description does not explicitly state when to use this tool versus alternatives like uc_schema_list or uc_schema_get. It is implicit that it is for retrieving a specific schema by full_name, but no guidance on prerequisites or exclusions.

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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