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. The bare phrase "catalog of common HTTP status codes" only implies a read-only reference and says nothing about output format, side effects, or the fact that all nine parameters are discarded. The schema parameter descriptions mention discarding, but the tool description itself is uninformative.

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 extremely compact, with no wasted words or filler. However, its brevity reflects a sample rather than a sufficient tool definition; it lacks the detail needed to make the tool easy to call correctly.

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 no output schema and no annotations, and 9 optional parameters that are all described as "discarded". The description does not say what the agent should actually pass (or that it should pass nothing) and does not explain what a "silent catalog" delivers. An agent is left guessing about return content and whether a parameter is meaningful.

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 baseline of 3 applies. The description adds no meaning beyond the schema and does not clarify why the nine parameters are present in a status-code catalog, but the schema already documents each parameter explicitly enough to me.

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 clearly identifies the resource as a catalog of HTTP status codes, making it evident this is a reference tool rather than a network fetch tool. However, it does not use a verb like "returns" or "lists" and does not explicitly contrast it with siblings such as fetch-status or browser-url-ok.

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 about when to use this tool versus alternatives, when not to use it, or whether any parameters should be supplied. The sibling set includes fetch-status, which could be confused for a status-checking tool, but the description gives no usage context to discriminate.

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