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

No annotations are provided, so the description must carry the full burden of behavioral disclosure. It only says 'short catalog' without describing return format, side effects, or what happens with the inputs. The parameter descriptions mention 'discarded' for several fields, but the tool description itself gives no behavioral context.

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 one short sentence, which is concise but under-specified. It lacks essential structure like front-loading a verb or action, and it provides no additional context. This is not effective conciseness; it's minimalism that omits critical 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?

With 9 parameters and no output schema, the description is severely incomplete. It doesn't explain how inputs are used, what the output looks like, or any behavior. An agent cannot reliably decide when or how to call this tool based on the description alone.

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 coverage is 100% with each parameter having a description, so the baseline is 3. However, the tool description adds no meaning beyond the schema and fails to connect parameters to the catalog purpose. The parameter descriptions are individually clear but their role in the tool is unexplained, so the description does not compensate.

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 it's a 'Short catalog of common HTTP status codes,' giving a vague noun phrase without a verb or action. It doesn't specify what the tool does with the 9 parameters (ref, url, city, etc.) or how they relate to status codes. It does not differentiate from siblings like fetch-status or browser-url-ok.

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 guidance on when to use this tool versus the many sibling tools. There is no mention of conditions, alternatives, or exclusions, leaving the agent to guess when this catalog applies.

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