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

readOnlyHint=true already tells the agent this is a safe read, so the bar is lower, and the description still adds real value by disclosing the shape of the result (address, remote flag, ids) even though no output schema exists. It does not mention pagination, ordering, or whether all locations are returned unconditionally, which keeps it short of a 5.

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 with the resource stated first and the qualifier nested afterwards; no waste. The nested parenthetical is slightly dense but carries two distinct pieces of information (returned fields and a downstream dependency).

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 zero-parameter read tool with no output schema, the description covers what is listed, what fields come back, and how the ids are consumed elsewhere. The only gap is result-set size or ordering behavior, which is minor here.

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?

The tool takes zero parameters, so there is nothing for the description to disambiguate; the baseline for a parameterless tool applies. Nothing in the description misrepresents the empty input schema.

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 and resource ('List all locations') and adds scope detail (address, remote flag, ids) that tells an agent exactly what comes back. It is clearly distinguishable from sibling list tools such as talenthr_list_departments or talenthr_list_divisions, though it never names them.

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 parenthetical note that these ids are what talenthr_list_employees filters on implies the main use case (fetch ids before filtering employees), which is genuinely useful context. However, it is framed as a fact about the data rather than explicit guidance ('use this when...'), and no alternatives or exclusions are stated.

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