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

No annotations are provided and the description discloses zero behavioral detail. The tool's expected canonicalization behavior—such as scheme/host normalization, query sorting, trailing slash handling, or fragment removal—is entirely unspecified.

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 words with no sentence structure qualifies as under-specification rather than conciseness. There is no useful content to evaluate for front-loading or efficiency.

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 annotations, no output schema, a meaningless description, and only generic parameter labels, the tool is critically incomplete. An agent cannot determine input format, behavior, return value, or edge cases despite the tool being part of a large crowded family of URL utilities.

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%, which sets a baseline of 3 even though the description text itself adds no parameter meaning. The schema descriptions 'Input to process' and 'SortQuery to process' are generic, but the parameter names and high coverage prevent this from being worse.

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 is 'URL Canonical: URL Canonical', a pure tautology that restates the tool name without adding a verb, action, or resource detail. It also provides no differentiation from many URL-related siblings such as x402-url-parse, x402-url-codec, or x402-url-expand.

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 about when to use this tool versus the many sibling URL tools. An agent cannot tell whether this handles normalization, sorting query parameters, resolving redirects, or something else, so it cannot make an informed selection decision.

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