create_cost_unit

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

The description only confirms creation (write operation), which is already implied by the annotations (readOnlyHint=false). No additional behavioral details such as side effects, permissions, or constraints are disclosed.

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 brief (four words) but lacks substance, making it underspecified rather than concisely informative.

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?

Given the tool has 4 parameters, no output schema, and many sibling tools, the description fails to provide any contextual information about cost units, use cases, or constraints, making it completely inadequate.

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?

Schema coverage is 100% with descriptions for all 4 parameters, so the schema already handles parameter semantics. The description adds no extra meaning but does not contradict.

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?

The description 'Creates new cost unit' essentially restates the tool name 'create_cost_unit', adding no new information. It qualifies as a tautology with minimal differentiation from sibling tools.

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 is provided on when to use this tool or when to choose alternatives. The description does not differentiate from other 'create_' sibling tools.

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