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 behavioral disclosure. It does not state the return format, whether the data is static or remote, whether there are side effects, or how the supplied ref, url, city, feed, host, json, path, zone, and query parameters are used. 'Short catalog' hints at read-only content but does not meaningfully 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 very short and has no filler, but this is under-specification rather than disciplined conciseness. A single noun phrase that does not convey operation, parameter selection, or output cannot earn high marks for structure. Brevity here comes at the expense of usefulness.

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 nine optional parameters, no output schema, no annotations, and a large set of sibling tools, the definition is critically incomplete. An agent cannot determine which parameters to supply, what the tool will return, or how a 'catalog of HTTP status codes' relates to the input fields. The description is far too thin for the surrounding complexity.

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 the schema already documents each parameter individually, which sets the baseline at 3. The tool description adds no parameter-level information of its own. However, the schema descriptions do not connect the parameters to HTTP status codes, so the overall parameter semantics remain confusing despite the high schema coverage.

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 is essentially a noun phrase that restates the tool name: status-catalog is 'a catalog of common HTTP status codes.' It adds the qualifier 'HTTP' and 'common,' but it provides no verb, no operation, and no explanation of how the nine unrelated-looking parameters relate to the catalog. This is bordering on tautology rather than a clear statement of what the tool does.

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 this tool versus siblings such as fetch-status, web-fetch, normalize-url, or validate-json. There are no prerequisites, exclusions, or alternative recommendations. The only implied use is 'consult a catalog of status codes,' which is too thin for an agent choosing among many sibling tools.

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