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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only states that this is a catalog, but does not explain what operation is performed, what the tool returns, or why the schema accepts ref, url, city, feed, host, json, and path. This is a significant transparency gap.

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 very short, which is concise, but it is under-specified. It earns a middle score because brevity is not a problem, but the single sentence does not carry enough operational information.

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 unrelated-looking parameters, no output schema, and no annotations, the description is completely inadequate. It does not explain the tool's behavior, expected inputs, return format, or relationship to sibling tools, leaving the agent unable to use it correctly.

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 has seven parameters and the URL, keep-alive, and error descriptions focus on what is discarded or validated, not on how each parameter relates to the status-code catalog. The description adds no parameter-level meaning, so the agent cannot determine which inputs matter for the intended use.

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' essentially restates the tool name with 'catalog' and adds only 'common HTTP' as context. It lacks a clear verb or action, and does not clarify how the many heterogeneous input parameters relate to a status-code catalog.

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 usage guidance is provided. The description does not indicate when to use this tool versus siblings like fetch-status, nor does it explain what inputs are relevant or how the catalog should be consulted.

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