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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety is covered and the bar is lower. The description implicitly reveals that this is a fixed knowledge base keyed by topic rather than a query-driven search (consistent with zero parameters), but it does not say whether the answer is returned whole, filtered, or how large it is.

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 compact sentence with zero filler, with the topic list front-loaded. It reads as a fragment rather than a full statement of purpose, but every element earns its place and nothing is padded.

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, read-only FAQ tool with no output schema, the description supplies the one piece of information an agent needs before calling: what subject matter is inside. It does not describe answer granularity or volume, but the annotation set and topic list cover the essentials for a tool this simple.

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?

There are zero parameters, so the baseline is 4. However, the description also does not clarify the consequence of a parameterless call — whether the full FAQ is dumped — leaving the topic list to stand in for argument semantics. Score stays at the zero-param baseline rather than above it because nothing is added beyond topic enumeration.

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?

Names the resource (FAQ answers) and enumerates the covered topics (languages, coding tests, screen-share hiding, audio storage, AI models, supported Macs), which lets an agent distinguish it from get_pricing, get_download_info, and get_product_overview. It is a noun phrase rather than a verb+resource statement, and the topics only implicitly differentiate it from siblings, so it falls short of a 5.

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?

Usage is implied by the topic list: call this when a question falls into one of the listed areas. There is no explicit 'use this instead of X' routing or statement of when not to use it, though the enumerated topics function as a de facto scoping guide against the sibling tools.

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