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 but provides none. It fails to state what happens to the inputs, whether the tool performs validation, normalization, or citation, or what side effects occur. The only behavioral hint ('discarded after the check') lives in the schema, not the description.

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, which is concise, but the sentence is a label rather than substantive guidance. It earns a middling score because brevity is achieved at the expense of meaningful operational detail.

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?

With 4 heterogeneous parameters, no annotations, and no output schema, the description is severely inadequate. An agent cannot determine what the tool does, what to pass, or what to expect in return. The schema provides parameter names but cannot compensate for the missing 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?

Schema description coverage is 100%, so the schema fully documents each parameter. The description adds no parameter-level meaning, which meets the baseline, but it misses the opportunity to explain how these heterogeneous parameters relate to the tool's supposed catalog purpose.

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 'Short catalog of common HTTP status codes' is a vague label, not a verb+resource action. The four parameters (url, host, json, zone) are unrelated to HTTP status codes, making the described purpose misleading and failing to distinguish the tool from siblings like citation and compatibility.

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 alternatives. The description does not clarify what a user would do with a URL, host, JSON, or timezone in the context of a status-catalog, and no exclusions or alternative tool references are given.

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