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

With no annotations provided, the description carries the full burden of behavioral disclosure, and it discloses nothing. It does not state what the tool does with the inputs, whether it performs network requests, what side effects occur, or what the output looks like. The description is merely a label, not a behavioral explanation.

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, which is compact, but this is under-specification rather than effective conciseness. It front-loads nothing of value and omits all operational detail, so brevity does not earn credit.

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?

Despite 100% schema parameter coverage, the description is far too thin to make the tool usable. The contradiction between the stated catalog purpose and the actual parameters is unresolved, and with no output schema or annotations, an agent has no way to know what to pass, what to expect back, or how this differs from sibling tools.

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 a written explanation in the schema. The description adds no meaning beyond the schema, which yields the baseline score of 3. However, the description does not help resolve the puzzling mismatch between a 'status code catalog' and parameters like url, host, json, and zone.

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 'Short catalog of common HTTP status codes' is essentially a tautology that restates the tool name 'status-catalog'. It uses a noun phrase rather than a verb+resource structure, and it does not distinguish this tool from siblings like citation or compatibility. The description also conflicts with the actual parameters (url, host, json, zone), which have no evident connection to a status-code catalog.

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 whatsoever about when to use this tool versus its siblings. The description does not mention any scenario, prerequisite, or context in which an agent should invoke status-catalog, nor does it explain how the parameters relate to the stated purpose.

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