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

No annotations are present, so the description carries the burden. It does disclose one behavioral trait—query and fragment are dropped—but it does not state whether the tool makes network requests, validates the URL, or fails on invalid input, nor whether it is side-effect free.

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, front-loaded with the main behavior and followed by the key transformation detail. 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?

Adequate for a simple utility, but with no output schema or annotations, the return format is left unspecified, and the description does not reconcile why the input schema contains nine mostly unrelated optional parameters. The agent must rely on the schema to know that `url` is the relevant input.

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 coverage is 100%, so the baseline is 3. The description adds a small clarification that URL query/fragment are ignored, but it never names `url` as the primary input among the nine optional parameters and leaves the agent to match it from the schema.

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 uses a specific verb ('return') with a clear resource (URL) and names the exact output components (origin, host, path) plus the transformation (query and fragment dropped). This separates it from sibling URL tools that check availability or fetch content.

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 is implied—call this when you need URL components with query/fragment removed—but there is no explicit when-to-use or when-not-to-use guidance, and no alternative tools are named. With many URL-related siblings, more explicit routing would help.

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