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

Annotations already declare the mutation profile: readOnlyHint=false, destructiveHint=true, idempotentHint=true. The description usefully adds that updates are saved to the database, the cache is invalidated, the operation is free, and authentication plus ownership are required. It does not spell out partial-update versus replacement semantics for nested sections.

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?

Three short sentences, front-loaded with the action and editable fields, followed by the key operational notes. There is no filler, and each sentence adds useful 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?

The description covers the important behavioral context for a mutation tool: persistence, cache invalidation, cost, authentication, and ownership. Given the rich input schema and annotations, the remaining gap is minor — it doesn't explain partial update behavior or what the call returns.

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 the schema already documents all six parameters. The description lists the editable fields but adds no format, syntax, or replacement semantics beyond what the schema provides, which matches the baseline for high schema coverage.

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 and resource — "Edit existing quiz content" — and lists the editable fields, so the agent can tell it mutates a quiz. It does not explicitly distinguish itself from close siblings such as change_quiz_settings or create_quiz.

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 phrase "Edit existing quiz content" implies this is for modifying an existing quiz rather than creating one, and the description states authentication and ownership prerequisites. However, it gives no explicit when-to-use guidance or alternatives to choose among the many sibling quiz tools.

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