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

No annotations are present, so the description alone must disclose behavior. 'Short catalog' subtly implies a read-only reference, but the description does not clarify what happens to the supplied parameters, whether any network access occurs, or what the return value contains.

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 sentence is short and contains no filler, but it is too sparse for a tool with seven parameters and no other explanatory context. It is concise rather than appropriately sized for the tool's actual complexity.

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?

There is no output schema and no annotations, and the description fails to explain return values, valid invocation patterns, or which inputs are relevant. Given seven seemingly unrelated parameters, an agent cannot confidently determine what to pass or what to expect back.

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 provides descriptions for all seven parameters, so the baseline is 3. The description adds nothing about how parameters map to status codes, and some schema descriptions are context-free, but the schema already covers parameter-level meaning to a reasonable degree.

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 states that the tool provides a short catalog of common HTTP status codes, which names a specific resource, but it does not state an operation or how the seven input parameters relate to that resource. It is less explicit than a true verb+resource description and is close to a restatement of the name.

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 versus sibling tools like fetch-status or web-fetch. No conditions, prerequisites, or exclusions are stated, so the agent must infer the appropriate usage from the name alone.

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