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

The only disclosed behavioral trait is 'No disk access.' With no annotations provided, the description does not cover return value, error behavior, or what makes a path 'safe,' leaving significant behavioral uncertainty.

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 very concise and front-loaded with the core purpose. It avoids unnecessary wording, though it may be too sparse for full clarity.

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 there is no output schema or annotations, the description is incomplete for an agent to use reliably. It does not specify the return type, the criteria for 'safe,' or failure conditions.

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?

All parameters have individual descriptions, but the tool-level description does not connect them to the path-checking purpose. Many parameter descriptions (e.g., 'Git ref name', 'IANA timezone name') appear unrelated, and the all-optional schema is confusing.

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 clearly states the verb ('check') and the resource ('path'), and adds a useful behavioral constraint ('No disk access'). However, the phrase 'looks safe' is somewhat vague without defining what safety means.

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?

There is no explicit guidance about when to use this tool versus the many sibling tools. The 'No disk access' note offers an implicit safe-to-call hint, but it does not explain selection criteria or alternatives.

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