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

With no annotations, the description carries the behavioral burden; it does add one meaningful behavioral fact ('No disk access'), indicating the check is syntactic and safe. However, it does not disclose return values, validation criteria, failure behavior, or whether the other eight schema parameters are accepted, ignored, or discarded.

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?

Two sentences, zero filler, and the key action is front-loaded. Every word earns its place, and the description is easy to scan.

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?

For a tool with nine optional parameters, no annotations, and no output schema, this description is too minimal. It does not explain which parameter to pass, what the result looks like, or how to handle the other schema fields, leaving an agent with insufficient context for reliable invocation.

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 description coverage is 100%, so the baseline is 3; the description itself adds no parameter-level meaning beyond naming 'path.' The mismatch between the path-focused description and the broad nine-parameter schema creates ambiguity about which parameter should be populated, but the schema's own parameter descriptions are clear.

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 states a concrete action ('check') on a specific resource ('a path') and adds a useful constraint ('No disk access'), which helps distinguish it from URL, host, or JSON checker siblings. However, it does not define what 'safe' means, and the input schema exposes eight other unrelated parameters that the description does not acknowledge.

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?

The description gives no explicit when-to-use or when-not-to-use guidance, and with 28 sibling tools there is no routing such as 'for URLs use browser-url-ok' or 'for actual file access use something else.' The word 'path' implies usage, but alternatives and exclusions are left entirely to inference.

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