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

The description discloses a meaningful behavioral trait: the body is discarded, so the caller should only expect status. Since no annotations are provided, the description carries the transparency burden, but it does not mention redirect handling, timeouts, or the fact that the large set of extra parameters appears to be ignored.

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 two short sentences, front-loaded with the main purpose and immediately followed by the key limitation ('Body discarded'). Every word earns its place; there is no filler or redundancy.

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 parameters, no annotations, and no output schema, the description is too thin to be fully actionable. It does not explain how to select among the many parameters, what the output format looks like beyond 'HTTP status', or how this tool relates to the large sibling family of URL/status/shape 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?

Although the input schema has 100% description coverage, the tool description does not clarify which parameter is the relevant one, and the schema's 'url' description ('HTTPS URL to normalize or cite') conflicts with the stated purpose of returning HTTP status. This leaves an agent uncertain about how to map the description onto the parameter set.

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 clearly states the tool returns an HTTP status for a specific kind of resource ('public library docs URL') and adds that the body is discarded. It is specific enough to convey the core action, but it does not differentiate this from sibling tools like fetch-status or browser-url-ok.

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 intended use case is implied: call this when you need a quick HTTP status check for a public library docs URL and do not need the response body. However, there are no explicit alternatives, exclusions, or guidance about when to prefer a sibling tool such as fetch-status or web-fetch.

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