Seo Api2 MCP Server

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. 'Page Size Checker' gives no indication of whether this is a read-only operation, if it makes network requests, what permissions might be needed, or what the output looks like. For a tool that likely fetches web pages, this lack of transparency about side effects, rate limits, or error handling is a significant gap.

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?

While 'Page Size Checker' is brief, this is under-specification rather than effective conciseness. The two-word description fails to convey necessary information, making it inefficient rather than streamlined. A truly concise description would front-load critical details without wasting words, but here the brevity comes at the cost of clarity.

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 the tool's likely complexity (involving web requests and size calculations), the absence of annotations and output schema, and the minimal description, this is highly incomplete. The description doesn't explain what 'page size' means, how it's measured, what the return values are, or any behavioral aspects. For a tool with one parameter but potentially significant implementation details, this is inadequate.

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?

The input schema has 100% description coverage, with the 'url' parameter clearly documented as expecting a URL like 'https://google.com'. The description adds no additional meaning beyond this, but since the schema fully covers the single parameter, the baseline score of 3 is appropriate. No compensation is needed, but no extra value is provided either.

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 'Page Size Checker' is essentially a tautology that restates the tool name without specifying what it actually does. It doesn't clarify whether it checks page size in bytes, DOM elements, or some other metric, nor does it mention what resource it operates on (e.g., web pages). While it vaguely suggests measuring something about pages, it lacks the specific verb+resource clarity needed to distinguish it from sibling tools like 'broken_links_finder' or 'meta_tags_analyzer'.

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 provides absolutely no guidance on when to use this tool versus alternatives. There's no mention of appropriate contexts, prerequisites, or exclusions, nor does it reference any sibling tools for comparison. Given the many sibling tools focused on web analysis (e.g., 'broken_links_finder', 'ssl_checker'), this omission leaves the agent with no basis for selecting this tool over others.

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