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

With no annotations provided, the description carries the full burden of behavioral disclosure. It does state 'No disk access,' which is a useful safety note, but it does not explain how 'looks safe' is determined, how the other 8 parameters are handled, or what the return value looks like. This is minimal transparency for a tool with such a broad parameter set.

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 a single, concise sentence that front-loads the primary action and constraint. It is efficient with no wasted words. The under-specification is a completeness issue, not a conciseness issue, so it earns a high mark for structure.

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?

The tool has 9 optional parameters, no output schema, and no annotations. The description only covers the path parameter and says nothing about the other parameters, which appear to be core to the tool's actual function. An agent cannot determine how to use the tool for non-path inputs or what result to expect. This is a significant completeness gap.

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?

The schema provides descriptions for all 9 parameters (100% coverage), so the tool description adds no additional parameter-specific meaning. It only mentions 'path' and repeats the 'no disk access' note already present in the schema's path parameter. Since schema coverage is high, the baseline score of 3 is appropriate; the description does not enhance or clarify parameter semantics.

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 specific action ('Check whether a path looks safe') and a key constraint ('No disk access'). However, the input schema defines 8 additional parameters (ref, url, city, feed, host, json, zone, query) beyond 'path', indicating the tool actually validates many kinds of inputs. The description only addresses path, making the tool's full purpose ambiguous and failing to differentiate it from siblings like validate-json or browser-url-ok.

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 instead of alternatives. The description only mentions path safety and does not reference the sibling tools that handle URLs, JSON, geolocation, etc. An agent would not know whether to call this tool for validating a URL or JSON, or to call a specialized sibling.

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