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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so safety is covered. The description adds one genuinely new signal, "Contains personal data," flagging sensitivity, but says nothing about pagination behavior or how many records come back, which the annotations cannot tell an agent.

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?

Four short telegraphic sentences, front-loaded with what the tool returns and immediately followed by the sensitivity warning and the ID constraint. The trailing endpoint path is minor but helps API traceability; no filler otherwise.

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 4-parameter read tool with no output schema and full schema coverage, the description supplies the resource, the returned fields, the data-sensitivity warning, and the ID exclusivity rule. Only the paging story (whether results are paginated across employees) is left entirely to 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 coverage is 100%, so the baseline is 3, and the description earns above that by stating the mutual-exclusivity rule for user_id/employee_id that the schema itself does not encode (no oneOf, no required fields). It still adds nothing about page/limit semantics, which the schema already documents well.

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 (family members of one employee) and enumerates the returned fields (name, relationship, birth date, marital status, ID number), which clearly separates it from talenta_get_employee and the other employee-listing siblings. The verb is only implied by the noun phrase and the title, keeping it short of a 5.

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?

"Give exactly one of user_id or employee_id" establishes a calling constraint, and the singular "one employee" implies this is a per-employee lookup rather than a bulk list. However, there is no explicit when-to-use guidance or named alternative (e.g. vs. talenta_get_employee), so usage must be inferred.

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