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 offers none. It doesn't indicate whether this is a read-only lookup, whether it makes external network calls, what format results return, potential rate limits, or error conditions. For a tool that presumably queries DNS systems, this lack of behavioral information 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 technically concise with just three words, this represents under-specification rather than effective brevity. The description doesn't front-load essential information and fails to use its limited space to convey any meaningful guidance. Every sentence should earn its place, but here the single 'sentence' provides almost no 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 tool's complexity (DNS querying with two parameters), absence of annotations, and lack of output schema, the description is completely inadequate. It provides no information about what the tool returns, how results are structured, error handling, or operational characteristics. For a tool that likely makes network calls to external DNS servers, this minimal description leaves the agent with insufficient context.

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 both parameters clearly documented in the input schema. The description adds no additional parameter information beyond what's already in the structured schema. According to scoring rules, when schema coverage is high (>80%), the baseline is 3 even with no param info 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 'DNS Records Checker' is a tautology that restates the tool name without specifying what action it performs. It doesn't indicate whether it retrieves, validates, analyzes, or modifies DNS records. While the name implies checking, the description adds no clarity about the specific verb or resource scope beyond what the name already suggests.

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 context, prerequisites, or comparison with sibling tools like 'name_servers_checker' or 'domain_to_ip' that might handle related DNS functionality. The agent receives zero usage direction from this description.

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