trivia_categories

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

Annotations already declare readOnlyHint=true, openWorldHint=true, idempotentHint=true and destructiveHint=false, so safety and repeatability are covered structurally. The description adds only that the data originates from Open Trivia DB, which hints at a small static list, but says nothing about caching or the shape of the returned categories.

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 front-loaded sentence with the verb, resource and data source in that order, and no filler. Nothing could be removed without losing 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 zero-parameter, annotation-covered read this is close to sufficient, but with no output schema an agent still does not know whether categories come back as names only or as id/name pairs ready to feed into a questions call. One clause on the return shape (and the ID used by trivia_questions) would close the gap.

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?

The tool takes zero parameters, so there is nothing for the description to disambiguate and the baseline of 4 applies. The description's silence on parameters is appropriate rather than a 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?

States a specific verb ('Get') and resource ('trivia categories') and names the source API (Open Trivia DB), so the purpose is immediately clear. However, it does not distinguish itself from the near-identical sibling 'triviadb_categories', leaving an agent to guess which of the two category endpoints to call.

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 when-to-use guidance, no mention of a follow-up step (e.g., passing a category into trivia_questions / triviadb_questions), and no exclusion telling the agent when the sibling 'triviadb_categories' is the better choice. The usage has to be inferred entirely from the name.

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