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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so safety is covered. The description adds the underlying endpoint (GET /v1/Common/Persons/{personId}/Employees) and, critically, enumerates the payload contents in the absence of an output schema — real added value. It omits edge behavior such as what happens when a person has no employee record.

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?

Two sentences: the return-field inventory is front-loaded, then the endpoint. The long field list earns its place because no output schema exists, and there is no filler prose.

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 single-parameter read tool with annotations covering safety, the description supplies the return shape that the missing output schema would otherwise provide. The remaining gap — behavior when the person has no employment record — is minor but worth noting.

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?

Only one parameter, person_id, and the schema documents it at 100% coverage ("Arcoro personId.", integer, >0). The description adds nothing about the identifier beyond what the schema already says, so the 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 resource (employment details for a person) and enumerates the concrete fields returned — hire/termination date, status, pay type, pay rates, job code, manager, location, department, pay schedule, union. This clearly separates it from exaktime_get_person (personal data) and exaktime_list_employees (roster), though it never names those siblings explicitly.

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 only implied: you need a person_id, so you must already have a person from get_person or list_persons. No explicit when-to-use/when-not or statement about preferring list_employees for multiple people is given, so the agent must infer the retrieval chain.

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