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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description adds genuinely useful behavior beyond that: the response includes level and review details, and 'The whole list comes back at once' explicitly rules out pagination — a real operational detail an agent would otherwise have to discover. The endpoint reference also hints at the underlying contract.

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?

Three short sentences, front-loaded with what is returned, then the full-list trait, then the endpoint. Little waste; the phrase 'as intelliHR returns them' is the only slightly hand-wavy part, though it usefully signals the payload mirrors the raw API shape.

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 one-parameter read tool with no output schema, the description covers what is returned (skills with level and review details), that there is no pagination, and the underlying endpoint. Combined with annotations covering safety and mutations, nothing essential for a correct call is missing.

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 0%, so the description must carry the single parameter's meaning. The endpoint path 'GET /people/{personId}/skills' implicitly maps person_id to the person whose skills are listed, but it doesn't explain the UUID format constraint stated in the pattern, nor error behavior for an unknown person. Marginal compensation for a single-parameter tool.

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 specifies a clear verb+resource: 'The skills assigned to a person', and scopes it with 'assigned to a person', which implicitly separates it from the org-wide intellihr_list_skills sibling. It stops short of naming that sibling explicitly, so the differentiation is inferred rather than stated.

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 required person_id and the per-person scoping, but the description never states when to choose this over intellihr_list_skills or intellihr_list_qualifications, nor any prerequisites (does the person need to exist? are skills only from review cycles?). Adequate but leaves routing to inference.

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