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 full burden for behavioral disclosure. 'Hosting Checker' reveals nothing about whether this is a read-only operation, what permissions might be needed, whether it makes external requests, what rate limits apply, or what kind of output to expect. The description fails to provide any behavioral context beyond the vague name.

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 technically concise with just two words, this represents under-specification rather than effective conciseness. The description doesn't front-load important information and fails to communicate the tool's purpose in a meaningful way. Every word should earn its place, but here the words don't provide sufficient value.

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 lack of annotations, no output schema, and a completely inadequate description, this tool definition is severely incomplete. The description fails to explain what the tool does, when to use it, what behavior to expect, or what results it returns. For a tool with no structured metadata, the description should provide comprehensive context, which it completely fails to do.

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% for the single 'url' parameter, which has a clear description with an example. The tool description adds no additional parameter information beyond what's already in the schema. According to scoring rules, when schema coverage is high (>80%), the baseline is 3 even with no parameter information in the description.

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 'Hosting Checker' is a tautology that restates the tool name without specifying what it actually does. It doesn't mention what aspect of hosting is checked (provider, performance, configuration, etc.) or what resource is examined. While the input schema suggests it checks URLs, the description itself provides no meaningful information about the tool's purpose.

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 about when to use this tool versus alternatives. With numerous sibling tools that perform various checks (DNS, SSL, headers, etc.), there's no indication whether this tool complements or overlaps with them. No context, prerequisites, or exclusions are mentioned.

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