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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is covered. The description adds useful context beyond that: the results depend on the child's birth date and which BEEG version applies, and the tool is Germany-only. It does not describe output language or what happens when no parameters are passed, but for a read-only lookup with this annotation coverage, the added context is adequate.

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 German portion is dense and front-loaded (scope, law, key numbers), which is efficient. But the English translation largely duplicates the German content and is truncated mid-sentence ('by the …'), which is a structural flaw, and the bilingual repetition adds length without new information.

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 with two fully documented optional parameters and strong annotations, the description is close to adequate. It covers the main content areas but is visibly truncated, and it does not state the default behavior when no enumerator component is given (e.g., whether all components are returned) or how results are delivered.

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% (both parameters have descriptions), so the baseline is 3. The description adds genuine meaning on top by mapping concrete legal values to the enum components (Anmeldefristen 7/13 Wochen, Kündigungsschutz 8/14 Wochen) and by tying the geburtsdatum parameter to which BEEG version applies — interpretation the schema alone does not provide.

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 names the specific resource ('Elternzeit nach dem BEEG') and enumerates concrete contents (maximum duration 3 years, transferable portion 12/24 months, notice periods 7/13 weeks, dismissal protection lead times), which clearly distinguishes it from sibling tools like hr_mutterschutz or hr_kuendigungsfrist. It lacks an explicit verb (calculate/look up), but the reference-tool purpose is unambiguous.

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?

Usage is implied by the subject matter: the tool answers parental-leave questions under the BEEG for Germany, and the 'Nur Deutschland' note imposes a geographic scope. However, there is no explicit when-to-use vs. alternative routing (e.g., pointing to hr_mutterschutz for maternity-protection questions) and no mention of prerequisites or edge cases like children born before 2007.

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