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 fully covered upstream. The description adds only the endpoint path and no behavioral detail such as result ordering, whether all skills are returned by default, or the cost of a broad unfiltered call.

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?

Extremely short with zero filler and the resource stated first. It is a sentence fragment rather than a complete clause ('The skills catalogue...'), which slightly weakens the lead but wastes no space.

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?

A simple, fully-documented, read-only list tool needs less prose, and the schema carries pagination and filter semantics well. Still missing is any statement of default behavior (all skills vs. filtered) and the catalogue-vs-person-skills distinction, which an agent needs in this 22-tool sibling set.

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 100%, including the useful pointer to list_reference_data kind skill_disciplines for obtaining discipline_id. The description's mention of business-critical and discipline filters is consistent with the schema but adds no meaning beyond it, 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?

The phrase 'The skills catalogue' with the two optional filters identifies the resource and its scope, and 'GET /skills' pins the endpoint. It never distinguishes itself from the sibling intellihr_list_person_skills, which is the most likely confusion an agent will have (catalogue vs. an individual's skills).

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?

'Optionally only business-critical skills or one discipline' restates the schema parameters rather than stating when to use this tool. There is no guidance on how it differs from list_person_skills or list_reference_data, so the agent must infer the routing decision.

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