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

Annotations already declare readOnlyHint, idempotentHint, non-destructive, and closed-world behavior, so the safety profile is fully covered. The description adds the useful detail that resources are grouped by resource group and reports which fields come back, but says nothing about ordering, pagination, or behavior when no resources exist.

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 efficiently packed sentence with the primary resource named first and the returned attributes following. There is no filler, though the parenthetical field list is somewhat dense.

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 single-parameter read tool with an output schema, complete annotations, and full schema coverage, the description covers enough for correct invocation. The only real gap is the unmentioned optional class filter, which the schema already explains.

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%, so class_id is fully documented in the schema as an id from list_classes. The description never references the class filter and adds no meaning beyond the schema, which places it at the baseline of 3.

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 uses a specific verb (List) and resource (textbooks, materials, links) and enumerates the data returned (status, condition, website, price, classes). This clearly distinguishes the tool from siblings such as list_assignments or list_classes, though it does not explicitly name those alternatives.

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 guidance is given on when to use this tool versus alternatives, nor any mention of the optional class filter as a way to narrow results. The usage context is only implied by the word 'List'.

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