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

With no annotations provided, the description carries the full behavioral disclosure burden, but it only implies a read-only reference. It does not disclose output shape, side effects, why there are nine unrelated optional parameters, or whether any network/file/disk access occurs, so it is not transparent.

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 one short sentence with no filler or wasted words, and it leads with the apparent resource type. It is strongly concise, although its extreme brevity is partly why other dimensions score low.

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, 100% schema coverage, no output schema, and no annotations, but the description explains almost nothing about how to call it correctly, what inputs matter, or what kind of result is returned. It is not complete enough for an agent to know what to select and invoke.

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%, and each of the nine parameters has its own description in the schema, so the description does not need to re-explain each one. However, the tool description adds no guidance on how any of these parameters relate to the catalog, which is a notable gap, but the high schema coverage keeps this at baseline.

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 is a noun phrase, 'Short catalog of common HTTP status codes,' that mostly restates the tool's name without stating the actual operation an agent should invoke. It does not say what the tool returns, how it is used, or how it differs from the many sibling tools, so it only vaguely communicates purpose.

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 instead of siblings such as fetch-status, browser-url-ok, or normalize-url. The description provides no context, exclusions, or alternative routing, leaving the agent to guess when this catalog is relevant.

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