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uc_schema_create

Create a schema in a Databricks Unity Catalog. Specify the schema name and parent catalog, with optional properties, tags, and owner.

Instructions

Create a schema (POST /api/2.1/unity-catalog/schemas).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameYesSchema name
catalog_nameYesParent catalog name
commentNo
propertiesNo
storage_rootNo
ownerNo
include_table_defaultsNo
tagsNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

Annotations indicate a mutation (readOnlyHint=false). The description adds no behavioral traits beyond the action, such as idempotency, conflict behavior, permissions, or side effects. Minimal contribution over annotations.

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

Conciseness2/5

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

The description is extremely short (one sentence) but omits critical information. It front-loads the action, but for an 8-parameter tool, this is under-specified, not concise.

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

Completeness1/5

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

Despite having an output schema, the description fails to mention return values, behavior, or any other contextual details. It is incomplete for a tool with 8 parameters and low schema coverage.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is low (25%) with only name and catalog_name described. The description does not explain any parameters or their semantics, leaving the agent with insufficient guidance for 6 of 8 parameters.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action (create) and resource (schema) with the HTTP endpoint. It is sufficient to distinguish the tool from siblings like uc_schema_delete or uc_schema_update, but lacks any additional context.

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 versus alternatives, no prerequisites or exclusions. The description only states the basic action, leaving the agent to infer usage from the tool name alone.

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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