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

With no annotations available, the description carries the full behavioral burden. It does disclose one meaningful trait — 'no disk access' — and implies this is a shape/safety check rather than a filesystem operation. However, it does not describe the output shape, what 'safe' means, or whether any other side effects occur, leaving notable gaps for an agent.

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 and front-loads the core action ('check whether a path looks safe') before the key behavior ('no disk access'). Every word is relevant and there is no redundancy.

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?

Despite a high-coverage schema, the tool has nine optional parameters, no annotations, and no output schema. The description is too terse to explain how the various unrelated parameters should be interpreted, what the agent should pass, or what kind of response to expect. It is not complete enough for a tool with this much surface area.

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 schema already documents all nine parameters. The tool description itself only references a path and repeats the no-disk access detail already present in the path parameter description; it does not add extra meaning beyond the schema.

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 uses a specific verb and resource: check a path, with the additional safety qualifier 'no disk access.' It is clear and consistent with the tool name, though it does not explicitly distinguish this from sibling validation tools like wiki-title-ok or domain-shape.

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 guidance about when to use this tool versus alternatives. The description does not mention that other shape/validation tools should be used for URLs, domains, titles, or JSON, nor does it explain when the file-path check is the right choice.

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