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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is clear. The description adds valuable context beyond annotations: it enumerates the checks performed and clarifies that it works on the strings only and cannot see redirects, which is important for setting expectations.

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, front-loaded sentence that efficiently lists the checks and limitations. It is long but every item earns its place by informing the agent about what will be reported; it could be slightly more structured but remains readable.

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?

Given a single-parameter tool with high schema coverage, explicit annotations, and no output schema, the description is nearly complete. It explains the input format, enumerates what is reported, and notes the static-analysis limitation. It does not describe the output format in detail, but the list of reported items gives sufficient expectation.

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 schema already documents the single parameter. The description repeats the same input format ('one per line, up to 500') without adding any new syntax, examples, or edge-case handling, matching the baseline of 3 for high-coverage schemas.

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 verb+resource ('Review pasted URLs or paths') and explicitly limits scope to pattern checks without fetching. It does not name any sibling tool to differentiate itself from, such as site_link_health or sitemap_to_outline, so it falls short of a 5.

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?

Usage is implied by 'Review pasted URLs or paths (no fetching)' and the input format instructions, but there is no explicit when-to-use/when-not or named alternative. An agent must infer that this is for static pattern review rather than network link checking.

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