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

With no annotations provided, the description carries the full burden for behavioral disclosure. 'Short catalog' hints at a read-only lookup but does not state return format, side effects, output shape, or how inputs are handled. The schema mentions discarded values and no disk access, but the tool description itself does not.

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 with no filler words, so it is concise. But it is under-specified: 'short' adds little value, and the lack of any action or context makes it feel sparse rather than well-structured.

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?

For a tool with 9 optional parameters and no output schema, the description is far too thin. It does not explain what the tool returns, which parameter to pass, or how the catalog relates to parameters like city, zone, query, or json. Agents cannot confidently invoke this tool from the given information.

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 baseline is 3 even without parameter details in the tool description. However, the description adds nothing about how the 9 optional parameters relate to the HTTP status catalog, which leaves the parameter list feeling disconnected.

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 a noun phrase ('Short catalog of common HTTP status codes') with no verb indicating what the tool actually does. 'Catalog' largely restates the tool name, and it fails to say whether this returns a list, looks up a code, or checks an input. It also doesn't differentiate itself from siblings like fetch-status.

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 on when to use this tool versus alternatives such as fetch-status, validate-json, or domain-shape. The description provides no context about suitable inputs or conditions, leaving the agent to guess.

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