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

With no annotations, the description carries the full behavioral burden. 'No disk access' usefully signals a side-effect-free shape check, but the description does not disclose the return format, what exactly counts as 'safe,' or how invalid inputs are handled.

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 two short sentences with no filler, and the most important detail ('No disk access') is front-loaded. It is concise and easy to scan, even though it is content-sparse overall.

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 nine optional parameters, no output schema, and no annotations, this description is too thin to support correct invocation. An agent cannot tell whether exactly one parameter is expected, what the tool returns, or why parameters like host and json appear in a tool named file-path-ok.

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 nine parameters have schema descriptions, so the baseline is 3; the tool description adds no real parameter meaning beyond restating the path concept. The mismatch between the path-focused description and unrelated parameters (url, city, feed, zone, query) is unresolved, which weakens agent confidence about which parameter to provide.

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 operation ('check whether a path looks safe') and adds the key boundary 'No disk access,' which separates it from tools that inspect real files or URLs. However, 'safe' is somewhat vague, and the broad input schema with params like url, city, json, and host undercuts the apparent path-only scope.

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 when-to-use or when-not-to-use guidance, and no mention of sibling alternatives such as browser-url-ok or normalize-url. The 'No disk access' line hints at safe usage but does not tell an agent when to choose this over the many related validation tools.

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