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

The description is transparent about dropping query and fragment, but with no annotations it fails to disclose how invalid URLs are handled, whether network access occurs, or that many schema parameters appear to be ignored/discarded. This leaves significant behavioral ambiguity.

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 concise and front-loaded, but given the nine-parameter schema it is too terse to be considered well-structured. It omits important context about parameter usage and behavior.

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 no output schema and no mention of return format, errors, or side effects, the description is incomplete for the tool's complexity. The presence of many unrelated parameters increases the need for context that is not provided.

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?

The tool description only explains the url parameter's role implicitly and provides no meaning for the other eight parameters. Although the input schema has individual descriptions, the tool description itself adds little semantic value beyond the schema and does not clarify parameter selection or ignored fields.

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's core function: returning origin, host, and path for a URL and dropping query/fragment components. However, it does not acknowledge the many unrelated parameters in the schema, which may confuse an agent about the tool's actual scope.

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 provided about when to use normalize-url compared with sibling tools such as browser-url-ok or fetch-status. The description does not mention conditions, prerequisites, or typical use cases.

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