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

With no annotations, the description must carry the full burden of behavioral disclosure, but it only describes the object as a 'short catalog.' It does not state whether the call is read-only, whether it contacts a network, what triggers success or error, or how inputs like ref, city, or json are used or discarded. It is not contradictory, but it is behaviorally nearly silent.

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 sentence with no filler, which is structurally clean. However, it is so terse that it reads as a noun phrase rather than a complete tool instruction, and with nine parameters and no output schema it is under-specified rather than appropriately sized.

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 no output schema, no annotations, and nine optional parameters, the description leaves essential context unresolved: what input selects a status code, what the returned catalog looks like, and what makes this different from fetch-status. It provides only the broad topic and not enough to invoke confidently.

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 parameter semantics are already documented in the input schema. The main description adds no selection guidance about which parameter is needed to look up a status, but because the schema covers all nine parameters, a baseline of 3 is appropriate.

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 domain and resource—a catalog of common HTTP status codes—but never states an explicit action like 'returns' or 'lists.' It partially distinguishes status-catalog from siblings like fetch-status by implying it is a catalog rather than a fetch, but the lack of a verb leaves the intended operation inferential.

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 call this tool, which of the nine optional parameters to provide, or how it compares with siblings such as fetch-status or browser-url-ok. No exclusions or alternatives are mentioned, so an agent must guess from the name and schema.

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