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

The description reveals that the body is discarded, but says nothing about side effects, response format, error behavior, or what happens if multiple parameters are supplied. With no annotations, more behavioral disclosure is needed.

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 short and front-loaded, but it is too terse for a 9-parameter tool and contains no structured usage details. It earns a middle score for brevity without sacrificing needed information.

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 a complex 9-parameter optional schema and no output schema, the definition provides only a single sentence and no examples. It is not nearly complete enough for an agent to invoke the tool 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?

Each parameter has a brief description, but they do not cohere with the stated tool purpose and no guidance is given for choosing among them. The 100% schema coverage cannot compensate for the lack of connection to the tool behavior.

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 states one narrow behavior (HTTP status for a public library docs URL), but the schema exposes 9 unrelated optional parameters, so the tool's actual purpose is not clear. It is not a tautology, but it does not accurately scope what the tool can do.

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?

No guidance is given for when to choose this tool over sibling tools like fetch-status or web-fetch, nor which parameter to supply. With 9 optional parameters, this is a serious omission.

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