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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint, and non-destructive behavior, so the safety profile is covered. The description's disclosure of returned fields is useful but largely duplicated by the output schema. It adds no cost, latency, or input-quality caveats (e.g., that plain-text resume/JD are required for meaningful results).

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 front-loaded sentence that states the comparison, the outputs, and the use cases with no filler. Every clause carries information.

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?

With an output schema covering return values and annotations covering safety, the description only needs to establish purpose and routing. Purpose is complete; routing to the right sibling is the one missing element for this dense HR toolset.

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% with only two parameters, both documented as 'Plain-text ... Required.' The description adds no format, size, or quality guidance beyond the schema, 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 description gives a specific verb+resource ('compares candidate or employee skills against a target job') and enumerates the outputs (present skills, missing skills, readiness score, development areas). It is clear on its own, but it does not name the closest sibling, score_resume_against_jd, which performs an overlapping resume-vs-JD comparison, so an agent cannot distinguish them from this text alone.

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?

It lists three business contexts (hiring, internal mobility, workforce planning), which implies when to use it. However, there is no explicit when-not guidance and no mention of alternatives, which is a real gap given score_resume_against_jd, match_end_to_end, and analyze_skill_adjacency all sit in adjacent territory.

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