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

Annotations already declare readOnlyHint, idempotentHint, non-destructive and closed-world, so safety is covered. The description adds real behavior beyond that: answers are returned in Quora's display order with full text, and answers_limit=0 short-circuits to a question-only payload. It does not mention rate limits or auth requirements, but nothing is contradicted.

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 sentences, front-loaded with the returned content and ending on the useful edge case. There is mild redundancy: the first sentence previews the return payload and the second restates it in more detail, which could be merged 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?

With no output schema, the description carries the burden of describing return values and does so adequately: question text, answer count, followers, topics, and per-answer author/upvotes/full text. It is a two-parameter read tool with annotations covering safety, so the remaining gap is minor, though it never says what happens when the URL is invalid or the question has no answers.

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 coverage is 100%, so the parameters are documented, but the description still adds meaning the schema lacks: it explains the sentinel behavior of answers_limit=0 (returns the question only) and that answer ordering follows Quora's display order. That is a genuine increment over the bare '0 to 20. Default: 5' constraint.

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 a specific verb (get/returns) and resource (one Quora question) and enumerates what comes back: text, answer count, followers, topics, and top answers with author and upvotes. It is clearly a single-question fetch keyed by URL, which implicitly separates it from search_questions, but it never names that sibling to make the distinction explicit.

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?

"Use it before answering, so your agent sees what is already said" gives a concrete usage context tied to the answer-writing workflow. It provides no exclusion or explicit alternative (e.g., 'use search_questions if you don't have a URL'), so an agent must infer the routing itself.

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