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

Annotations already declare destructiveHint=true and idempotentHint=true, so the safety profile is covered. The description adds real value beyond that by stating what survives the deletion ('quiz sessions and answers stay'), which is the key behavioral question for a destructive call. It stops short of saying whether the delete is reversible or how dependent records are handled.

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 short sentence with the action front-loaded and the scope caveat immediately after it. Nothing is wasted or buried.

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 destructive delete with no output schema, the essentials are mostly present: the action, the identifier, and what is preserved. However, it omits how to find a valid quiz_id and whether the operation can be undone, which leaves gaps for an agent about to perform an irreversible write.

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 0% and the description says nothing about quiz_id — not its format, not where to obtain it (e.g., from the quizzes or quiz_history tools). With one undocumented parameter, the description fails to compensate for the schema gap.

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 and resource ('Delete a saved quiz'), matching the name and title, and the parenthetical scopes exactly what is removed versus preserved. It does not explicitly name a sibling, but it is clearly distinguishable from quiz_save, quiz_end, and quiz_history on verb 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?

There is no explicit when-to-use statement, no prerequisites, and no mention of an alternative (e.g., quiz_end vs quiz_delete). The parenthetical clarifies blast radius rather than when this tool is the right choice, leaving the agent to infer the use case.

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