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

With no annotations provided, the description must carry the full behavioral burden. It does disclose 'No disk access,' which is a meaningful safety guarantee, but it does not explain what 'safe' means, how the check behaves, what it returns, or how it handles the many non-path inputs in the schema.

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 front-loads the purpose before the safety caveat. It is appropriately concise, though the brevity contributes to under-specification rather than being a flaw in 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?

For a tool with nine optional parameters, no annotations, and no output schema, this description is not complete enough. It fails to clarify whether all parameters are validated, which inputs are alternatives, what the output shape is, and what 'safe' means in practice.

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 structured definitions already document each parameter, including discard behavior and intended use. The description adds no parameter-level meaning beyond the word 'path,' which aligns with the schema's 'File path to check' parameter, so the baseline score of 3 is appropriate.

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 names a specific verb and resource ('Check whether a path looks safe') and adds a useful safety qualifier ('No disk access'), so the core idea is understandable. However, it does not explicitly say 'file path' and it ignores the tool's broad input schema, which accepts nine unrelated parameters such as url, json, host, and city. This creates ambiguity about whether the tool validates only the 'path' parameter or all of them.

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 provides no guidance on when to use this tool instead of siblings like browser-url-ok, normalize-url, or wiki-title-ok. There is no mention of alternatives, exclusions, or the kind of path for which this check is appropriate.

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