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

No annotations are provided, so the description carries the full burden. It states the data source (ANAF) and output language (English), but says nothing about rate limits, error behavior for invalid CUIs, or whether the lookup is cached/live. For an external-API lookup with zero annotation coverage, this is a notable 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?

A single sentence that front-loads the input requirement and then the returned fields. No waste, no redundancy.

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?

Returns are enumerated and params are fully covered by the schema, but with no annotations and no output schema, the description omits the behavioral and error-handling context an agent needs. Adequate for invocation, thin for edge cases.

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 coverage is 100%, with the CUI format and include_fx default already documented in the schema. The description mentions the BNR rate (mapping to include_fx) but adds no syntax or format detail beyond the schema, so baseline 3 applies.

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?

States a specific verb (look up) and resource (Romanian company by CUI/CIF), and enumerates the exact fields returned, letting an agent distinguish it from siblings like get_company_financials or get_company_risk_report.

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 implies the input is a CUI/CIF lookup but gives no explicit when-to-use guidance or naming of alternatives among the many company/legal siblings. It is adequate but leaves sibling selection to inference.

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