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 only says the tool is a 'catalog' and gives no information about side effects, ignored inputs, return shape, or operational behavior. The schema parameter descriptions mention discarding inputs, but the description itself provides no behavioral transparency.

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 text is short and has no wasted words, but it is an under-specified noun phrase rather than a real tool description. It is concise in length but not in meaning, which is closer to under-specification than effective conciseness.

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 the seven unrelated-looking parameters, the absence of an output schema, and the need to choose among many sibling tools, this description is completely inadequate. It does not explain what an agent should pass, what it will receive, or how the parameters relate to the stated catalog purpose.

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?

The schema contains seven parameters, each with its own description, so schema coverage is effectively 100%. The description adds no parameter-level meaning, but because the schema already documents each parameter, the baseline of 3 is appropriate; the description does not need to compensate.

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 identifies the resource ('common HTTP status codes') and the general nature of the tool as a 'catalog', but it lacks a verb and does not state what an invocation returns or how it is used. It is distinguishable from siblings like fetch-status only by inference—'catalog' suggests a static reference while fetch-status implies a live lookup—but this is not made explicit.

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 on when to use this tool versus alternatives such as fetch-status or web-fetch. The phrase 'short catalog of common HTTP status codes' weakly implies a reference use case, but no when-to-use, when-not-to-use, or alternative selection criteria are provided.

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