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

No annotations are present, so the description carries the behavioral burden. It discloses the main transformation, dropping query and fragment, and implies a local read-only operation, but it does not mention error behavior, invalid URL handling, or what happens with the many unrelated schema properties.

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 and the core behavior front-loaded. Every word contributes to understanding what the tool does.

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 too thin for the actual complexity: a 9-property schema with no required fields, no output schema, and no annotations. An agent cannot tell what return shape to expect, which properties to supply, or why so many unrelated fields are accepted.

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?

All nine parameters are already described in the schema, so the baseline is 3. The description adds meaning about the URL-component transformation, but it does not clarify that only the url parameter is the meaningful input nor explain why the schema contains unrelated discarded fields such as city, json, and zone.

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 transformation: return origin, host, and path for a URL and drop query and fragment. This is clear and distinguishes it from fetch/check siblings at a high level, though it does not name alternatives or define the output format.

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?

There is no guidance on when to use this tool versus sibling tools such as browser-url-ok, fetch-status, web-fetch, or figma-url-shape. No alternatives, exclusions, or contextual triggers are mentioned.

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