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

With no annotations, the description carries the full burden of behavioral disclosure. It adds 'No disk access,' which is useful, but it doesn't disclose what happens with the other parameters (e.g., they are discarded), error behavior, or return format. This is a significant gap for a tool with 9 optional parameters.

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, but it is under-specified. It is not overly verbose, yet the content is too thin to be effective. It is structurally fine but does not earn its place by adding necessary context.

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 9 parameters and no output schema, the description is highly incomplete. It doesn't explain what 'safe' means, how the tool validates the other inputs, what it returns, or any error handling. An agent would be guessing at the tool's behavior beyond the schema.

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 each parameter already has a description in the schema. The tool description adds no parameter-specific meaning beyond that, so it appropriately relies on the schema. Baseline 3 is correct.

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') but the schema includes 8 other parameters (url, city, feed, host, json, zone, query, ref) that are unrelated to path checking. This mismatch makes the tool's actual scope unclear and fails to distinguish it from siblings like browser-url-ok or fetch-status.

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 versus the many siblings. There are no mentions of alternatives, prerequisites, or conditions that would route an agent here.

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