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

No annotations are provided, so the description carries the full burden of explaining side effects, read-only behavior, or discard semantics. It only says 'catalog' and does not mention that inputs are discarded after shape checks or that no state is changed.

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 short sentence with no filler, but the brevity leaves out critical usage and behavioral context. It is under-specified rather than appropriately concise for a tool with seven parameters.

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 seven schema parameters, no output schema, and no annotations, a one-phrase description is completely inadequate. It does not explain how the parameters map to the catalog, what the output looks like, or what 'common HTTP status codes' means in relation to the inputs.

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 descriptions cover all parameters, so the schema already provides the heavy lifting. The tool description adds no parameter-level meaning or relationship between the parameters and the catalog.

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 a resource ('common HTTP status codes') and hints at a lookup/catalog behavior, but uses no verb and is vague about what the tool actually does with the inputs. It does not differentiate from siblings like fetch-status or web-fetch.

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 is given on when to use this tool versus sibling tools such as fetch-status, normalize-url, or web-fetch. There are no exclusions, conditions, or alternative recommendations.

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