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

Annotations already cover read-only, open-world, idempotent, and non-destructive behavior, yet the description adds substantial operational detail beyond them: the 60-link limit, how bot walls are reported as blocked rather than broken, fix suggestions, and the 30-requests-per-minute rate limit. This is exactly the kind of extra context the annotations do not provide.

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 front-loaded, with the core action first, followed by important behavioral caveats and limits. Every sentence earns its place and none are redundant.

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?

No output schema exists, so the description carries the return-value burden by naming the result categories (broken, redirect, blocked) and noting that each problem includes a suggested fix. For a simple read-only checker, this is complete enough to call correctly.

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% and the single url parameter is already fully documented with an example. The description repeats that it is one public web page but adds no new syntax or format guidance, so the baseline score of 3 is appropriate.

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 precise verb and resource: it checks every link on one public web page and reports broken, redirect, and blocked links. No siblings exist to differentiate from, but the scope and output categories are unmistakable.

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?

The description gives clear context for use: one public web page, up to 60 unique links, free over MCP at 30 requests per minute. It does not explicitly state when not to use it, but with no sibling tools the practical constraints are sufficient.

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