Catalog_ChangeCustomColumnUserName

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

No annotations are provided, and the description does not disclosure behavioral traits such as whether the operation is destructive, requires specific permissions, or is idempotent. The agent is left in the dark about side effects.

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

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

The description is extremely concise at three words. While it wastes no words, it may be too terse for an agent to fully grasp the tool's function, especially given the lack of parameter or behavioral info.

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

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

With no output schema and no parameters, the tool definition is incomplete. An agent cannot determine what inputs are needed (e.g., column identifier) or what the result will be. The description fails to provide essential context for a mutation tool.

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

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

Input schema has no parameters, so schema description coverage is 100%. The baseline is 3, and the description adds no parameter-related information. This is acceptable but does not improve the agent's understanding.

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

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

Description states 'Change Custom Column User Name', which clearly indicates verb and resource. However, it does not differentiate from siblings like Catalog_ChangeCatalogColumnUserName beyond the tool name itself, and the meaning of 'user name' is vague.

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

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 its siblings. There is no mention of prerequisites or context that would help an agent decide between similar tools like Catalog_ChangeCustomColumnExpression.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.