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

With no annotations, the description must carry the full burden of explaining behavior. 'Catalog' weakly implies a read-only operation, but the description says nothing about how the url/host/json/zone inputs are used, whether the operation has side effects, or what output the agent should expect.

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 tight sentence with no filler, so it is structurally concise. However, for a tool with four parameters, no annotations, and no output schema, the brevity reads as under-specification rather than efficient completeness.

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?

The description only covers the subject matter of the catalog. It omits how to invoke the tool, what the returned catalog looks like, how the optional parameters affect results, and how it relates to the sibling tools, so an agent cannot confidently call 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?

Schema description coverage is 100%, so each parameter already has its own description (for example, JSON text is 'discarded after the check'), earning the baseline 3. The tool description itself adds no parameter-level meaning and does not connect any of the four parameters to the catalog concept.

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 the resource ('common HTTP status codes') and frames the tool as a catalog, so the general subject is clear. However, it lacks an explicit verb or action (get/list/return) and does not distinguish the tool from the sibling tools, leaving the purpose only vaguely specified.

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 gives no guidance on when to use status-catalog versus siblings like validate-json, normalize-url, or citation. There are no contexts, prerequisites, exclusions, or alternative indicators, so an agent must guess when this tool is the right choice.

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