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

With no annotations, the description carries the full burden of explaining behavior, but 'short catalog' only weakly implies a read-only reference. It does not disclose what the tool returns, whether parameters are consumed or ignored, or any side effects.

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 phrase with no wasted words, so it is concise. However, it is too thin to serve as an adequate tool definition, especially given the complex input schema and sibling tool context.

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 is inadequate for the tool's context: there is no output schema, no annotations, multiple optional inputs, and many sibling tools. It does not explain what the agent should pass in or what it can expect in return, leaving important invocation details unspecified.

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 input schema provides descriptions for all eight parameters, so schema coverage is high. The tool description itself adds no meaning about how parameters relate to the catalog, so it does not improve on the schema, but the schema already carries the baseline semantic weight.

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 the domain—common HTTP status codes—and implies the tool provides a catalog/list of them, but it lacks an explicit verb or operation. It does not clearly distinguish itself from sibling tools like fetch-status, leaving the exact action the agent should expect ambiguous.

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 instead of alternatives such as fetch-status or web-fetch. No context, prerequisites, or exclusions are provided, so an agent cannot decide between this and related tools.

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