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

With no annotations, the description carries the full behavioral burden. It usefully discloses that the body is discarded, but it does not state whether a live network request is made, how redirects or timeouts are handled, or any rate-limit or safety considerations.

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?

Two short sentences with no filler. The core purpose is front-loaded, and the second sentence adds a meaningful behavioral constraint without waste.

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 tool has 9 optional parameters, no annotations, and no output schema, so a bit more context would help. However, the schema thoroughly describes each parameter, and the description names the expected output (HTTP status) and explicitly rules out returning the body, making the tool minimally callable.

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. The description mentions a URL but does not add meaning beyond the schema's own parameter descriptions, which already document each parameter and note that most are discarded.

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 a clear operation: return the HTTP status for a public library docs URL, and adds that the body is discarded. This distinguishes it from body-returning tools like web-fetch, but it does not explicitly differentiate it from sibling status tools such as 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 'Body discarded' note implies use only when the HTTP status is needed and the body is not, but the description gives no explicit when-to-use or when-not-to-use guidance. It also does not mention alternative sibling tools that could return content or handle browser rendering.

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