Seo Api2 MCP Server

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

With no annotations provided, the description carries the full burden of behavioral disclosure but provides none. It doesn't indicate whether this is a read-only operation, what kind of data it returns, whether it makes external API calls, or any behavioral characteristics. The 'depreciated' in the tool name suggests it might be outdated or replaced, but the description doesn't explain this behavioral implication. For a tool with zero annotation coverage, this complete lack of behavioral information is inadequate.

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 the description is technically concise with just two words, this represents under-specification rather than effective conciseness. The description fails to communicate essential information about the tool's purpose and usage. Every sentence (or in this case, word) should earn its place, but 'Domain Age Checker' doesn't provide meaningful value beyond the tool name itself. This is brevity at the expense 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 that there are no annotations and no output schema, the description fails to provide the contextual completeness needed for effective tool use. The description doesn't explain what the tool returns, how it differs from the non-deprecated version, or any behavioral characteristics. For a tool with 'depreciated' in its name (suggesting important behavioral context) and no structured metadata, this minimal description is completely 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 schema description coverage is 100% with a single parameter 'domain_name' that has a clear description in the schema ('Example value: google.com'). The tool description adds no additional parameter information beyond what's already in the schema. According to the scoring rules, when schema_description_coverage is high (>80%), the baseline score is 3 even with no parameter information in the description, which applies here.

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 'Domain Age Checker' is a tautology that merely restates the tool name without adding any meaningful information about what the tool actually does. It doesn't specify what action is performed (e.g., 'check', 'retrieve', 'calculate') or what resource is involved beyond the obvious domain reference. This provides no differentiation from sibling tools like 'whois_domain_lookup' or 'domain_age_checker' (non-deprecated version).

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. There's no mention of what distinguishes this deprecated version from the non-deprecated 'domain_age_checker' sibling tool, nor any indication of when this tool might be appropriate versus other domain-related tools like 'whois_domain_lookup' or 'dns_records_checker'. The description offers zero contextual guidance for tool selection.

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