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

The description transparently discloses the result shape and the lossy behavior of dropping query and fragment. However, with no annotations at all, it leaves important behavioral questions unanswered, such as whether the tool performs network access, how invalid URLs are handled, and whether only the `url` parameter is actually used.

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 convey the primary behavior and the key lossy detail with no wasted words. The main action is front-loaded and easy to parse.

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 description is incomplete for a tool with nine optional parameters, no output schema, and no annotations. It does not state that `url` is the operative parameter, what happens when other parameters are supplied, or how the returned origin/host/path are structured, making it hard for an agent to call correctly with confidence.

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 adds some meaning by indicating that the URL is the core input and that query/fragment components are removed, but it does not clarify the role of the other eight parameters. The word 'query' in the description also risks confusion with the schema's `query` parameter, which is described as search text.

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 specific operation: return origin, host, and path for a URL, and clarifies that query and fragment are dropped. This is clear and distinguishable from generic URL handling, though it does not explicitly differentiate itself from sibling tools such as browser-url-ok or web-fetch.

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 about when to use this tool versus alternatives, and no exclusions or alternative suggestions are provided. The description implies it is for URL normalization, but an agent is not told when this is preferred over sibling URL-related tools.

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