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

Annotations already declare readOnlyHint=true, non-destructive, closed-world, so the safety profile is covered. The description adds genuinely useful behavior — results are ordered newest first — but says nothing about pagination, result limits, or what happens for a student with no assessments.

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 compact sentence that front-loads the resource and field list; every clause carries information and nothing is padded.

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 simple read-only list tool this is nearly sufficient, but with no output schema the description should say more about the shape of results (history size, pagination, empty case) and how it differs from get_latest_assessments.

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 with 100% schema description coverage, which already explains that studentId comes from list_students. The description adds no meaning beyond the schema, so the baseline of 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?

Names a specific resource (physical assessments) plus concrete fields (weight, body fat, measurements, skinfolds) and scopes it to one student, so the verb+resource is clear. However, it does not distinguish itself from the close siblings get_assessment and get_latest_assessments, which an agent could easily confuse it with.

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?

No when-to-use or when-not-to-use guidance is given, and none of the obvious alternatives (get_assessment, get_latest_assessments) are named. The agent must infer from the name alone whether this returns history or a single record.

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