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

There are no annotations, so the description carries the full burden of behavioral disclosure. It does not state whether the tool is read-only, what it returns, whether inputs affect the output, or any side effects. 'Short catalog' implies a safe lookup but does not explicitly disclose behavior.

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 compact sentence with no filler or redundant phrasing. It front-loads the core subject. However, it is so brief that it borders on under-specification, so it earns slightly less than a perfect score.

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 input parameters, no annotations, and no output schema, this description is markedly incomplete. It does not say how the parameters relate to the catalog, what the catalog contains, or what an agent should expect in the result.

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 already includes descriptions for all seven parameters, so schema coverage is high and the baseline is 3. The tool description itself adds nothing about parameter semantics; the parameter descriptions are individually meaningful, even if their connection to the catalog is not explained.

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 names a concrete resource ('HTTP status codes') and indicates the tool provides a 'catalog,' which is enough to infer the general purpose. It lacks an explicit verb like 'return' or 'list,' but the noun 'catalog' communicates the intended resource and distinguishes it from sibling tools like fetch-status.

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?

The description provides no guidance about when to use this tool, what kinds of queries it answers, or how it differs from alternatives. An agent is left to infer that a 'status catalog' is meant for looking up HTTP status codes, but no explicit context or exclusions are given.

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