eu-company-mcp-server

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

Cites Eurostat as source but lacks details on return format, caching, rate limits, or authentication needs (no annotations provided to supplement).

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?

Compact and front-loaded; Args section efficiently conveys parameter semantics without verbosity.

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?

Adequate for simple 2-parameter tool but lacks description of return values (no output schema exists) and misses Title field.

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?

Effectively compensates for 0% schema description coverage by documenting both parameters with examples (semicolon-separated country codes, year format).

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?

Clearly states it retrieves Eurostat business demography data (foundations, closures, active firms) with specific metrics, though could emphasize 'aggregate statistics' to better distinguish from individual company lookup siblings.

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?

Provides no guidance on when to use this vs company_search (individual entities) or other Eurostat tools like eu_gdp.

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