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

No annotations are provided, so the description carries the full burden of explaining behavior. It only says that this is 'the first question' of a decision guide, which implies a read-only presentation of a question but does not disclose whether state is created, whether the guide can be restarted, what the response contains, or any side effects.

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?

The description is a single concise sentence that adds useful information beyond the title ('first question') without any filler or repetition. It is appropriately sized for such a simple tool.

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 tool is low-complexity with no parameters, so the description is minimally sufficient to justify calling it first. However, there is no output schema and no mention of what the response will look like or how to proceed after receiving the first question, which leaves the agent without explicit next-step guidance.

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 has zero parameters, so there is nothing for the description to clarify about parameter meaning. The baseline for a zero-parameter tool is 4, and the description correctly adds no unnecessary parameter details.

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 identifies the tool as 'the first question' of a specific decision guide, which clearly signals it is the entry point. It distinguishes itself from sibling tools like checker_answer and checker_tree by establishing its position at the start of the flow, though it lacks an explicit verb like 'starts' or 'returns'.

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 'first question' implies that this tool should be called at the beginning of the Malta VAT registration checker flow, and that checker_answer or checker_tree would be used afterwards. However, it does not explicitly state when to use this tool versus its siblings or mention any conditions or prerequisites.

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