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

Annotations already mark the tool as read-only, idempotent, and non-destructive. The description adds useful context that results are date-specific ('an einem Stichtag ab 2017') and limited to Germany, but it does not disclose return format or edge cases. The annotation coverage lowers the burden, so a mid-range score is appropriate.

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?

The description is compact and front-loads the key constraint ('Nur Deutschland') and core thresholds. The bilingual repetition is somewhat redundant, but it remains readable and not bloated.

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?

For a read-only legal reference tool with no output schema, the description covers the main legal components and thresholds: 200/500 employees, 5/3-year reporting cycle, and the EU directive. It does not explicitly describe return values or the optional 'bestandteil' filter, but those are covered by the schema.

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%, so the schema already documents 'datum' and 'bestandteil' with formats and enum values. The description adds no parameter-level detail, but none is needed beyond what the schema provides.

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 clearly identifies the tool's subject: German Pay Transparency Act thresholds and reporting duties at a reference date, plus EU Directive 2023/970. It is specific enough to distinguish from generic HR tools, though it does not explicitly name a sibling like hr_schwellenwerte_arbeitsrecht and lacks an explicit verb such as 'returns' or 'calculates'.

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?

No explicit guidance is given on when to use this tool versus alternatives. It only states 'Nur Deutschland' and the legal scope, leaving the agent to infer usage from the topic rather than providing exclusions or sibling references.

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