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, and it only says the tool is a catalog. It does not state whether the tool makes network requests, whether inputs are ignored, whether it is a static reference, or what side effects might occur. The schema hints that values are discarded, but that information is not in 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 a single short sentence with no wasted words, which is structurally efficient. However, it is so skeletal that it under-specifies the tool rather than being appropriately concise. It lacks any organizing context for the large input schema.

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?

For a tool with seven parameters, no annotations, and no output schema, this description is not complete enough for an agent to invoke it correctly. The relationship between the catalog and the parameters is entirely unexplained. An agent is left without enough information to know what inputs are valid or what the tool returns.

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 input schema has descriptions for all seven parameters, so schema coverage is high and the baseline is 3. The description adds no parameter-level meaning, and it fails to explain how any of the parameters relate to looking up HTTP status codes. Still, the schema itself provides detailed per-parameter descriptions.

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 says the tool provides a short catalog of common HTTP status codes, which conveys the resource but not an explicit action or invocation model. It does not distinguish itself from siblings like fetch-status in terms of when to use the catalog rather than a live check. The name and description together give a rough idea, but the purpose remains vague.

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 alternatives such as fetch-status, nor any indication of which of the seven input parameters to provide. No exclusions or context are given. An agent cannot determine whether to call it with no arguments or with a specific reference value.

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