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

No annotations are provided, so the description carries full burden. It claims query and fragment are dropped, but the schema includes a 'query' parameter (discarded after length check) and several other discarded parameters. The description fails to disclose that the tool accepts many unrelated inputs, making its behavior unclear and inconsistent with the schema.

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 a single sentence with no fluff, which is concise. However, it is under-specified and does not front-load critical caveats about the schema mismatch. It earns points for brevity but loses for missing structure that would clarify scope.

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 9 parameters, no annotations, and no output schema, the description is grossly incomplete. It fails to address the majority of parameters, lacks usage context, and does not describe return behavior beyond a vague phrase. An agent cannot correctly invoke this tool based on this description.

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 each parameter has a description, but the tool description adds no meaning to them. The description does not explain why parameters like city, feed, or zone exist, nor how they relate to the stated URL normalization purpose. The agent gets no help connecting the description to 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 states a specific purpose (return origin, host, path) but the input schema contains 9 parameters including city, feed, json, zone, etc., which are unrelated to URL normalization. This creates a clear mismatch, making the tool's actual purpose ambiguous and misleading.

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 on when to use this tool versus the many URL-related siblings (e.g., browser-url-ok, playwright-url-ok, domain-shape). The description does not mention alternatives or conditions, leaving the agent with no routing information.

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