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

Annotations already establish readOnly, non-destructive, closed-world behavior, so the description only needs to add the payload shape — and it does by enumerating the three status buckets (received, answered, late). It says nothing about ordering, counts, or pagination, so it is useful but not exhaustive.

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?

One short, front-loaded sentence with zero padding. It is slightly telegraphic (no explicit verb like 'returns'), but every word contributes 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?

For a one-parameter read tool with no output schema, the description supplies the key missing piece: the shape of the result. It lacks detail on edge cases (no students assigned, template not found), but nothing essential to invoking it correctly is absent.

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?

There is a single parameter with 100% schema coverage, including a cross-reference to list_checkin_templates, so the schema carries the load. The description adds no further meaning about the id (e.g. scope or permissions), which matches the baseline 3 for fully documented schemas.

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 names the resource (one check-in questionnaire) and the returned content (which students received it, answered, or are late), so an agent knows exactly what it gets. It does not, however, separate itself from close siblings like get_checkins_overview or list_checkin_answers.

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 scoping phrase 'For one check-in questionnaire' implies this is the per-template drill-down rather than the aggregate overview, which hints at when to use it. There is no explicit statement of when not to use it and no sibling is named as an alternative, so the guidance remains inferred.

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