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

With no annotations, the description carries the behavioral burden, and it does disclose two key traits: it returns an HTTP status and discards the body. It does not mention redirect handling, timeouts, rate limits, or what happens with non-URL parameters, but for a lightweight hint-style check the disclosed behavior is meaningful.

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 exactly two short, front-loaded sentences with no filler: first the core function, then the body-discard behavior. Every word earns its place, and the structure makes the key information immediately visible.

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?

Given eight parameters, no annotations, and no output schema, a single sentence about HTTP status and discarded body is not enough for an agent to invoke this correctly. It does not clarify the return format, which parameters are required versus optional, or how the tool differs from the many URL/status siblings, so the description is incomplete for the complexity of the tool.

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?

All eight parameters have descriptions in the schema, so schema_description_coverage is high and the baseline is 3. The tool description itself adds no parameter guidance beyond mentioning the documentation URL, leaving the relation between the URL, ref, city, feed, host, json, and path fields unexplained.

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 the HTTP status for a public library docs URL and explicitly notes that the body is discarded, giving a concrete verb-resource-outcome mapping. It does not, however, differentiate this from sibling tools like fetch-status or web-fetch, and the input schema contains many unrelated-looking parameters that the description ignores.

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 description implies the tool is for cases where you only need the HTTP status and not the response body, but it never explicitly says when to choose this over alternatives or when not to use it. No sibling tool or alternative is named, so an agent must infer the boundary from the one-sentence description.

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