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

No annotations are present, so the description carries the full burden. It only states what the tool is (a first question) and does not disclose what happens when it is invoked, what it returns, or whether it has side effects. This is minimal behavioral transparency.

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 with no filler or redundant content. It is appropriately sized for such a simple tool and delivers its only meaningful information immediately.

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?

Without an output schema or annotations, the description should clarify what an agent should expect from calling this tool. It does not state the return value or how to proceed afterward, such as using checker_answer for subsequent steps. The context is too sparse for confident use.

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 and an empty schema, so there are no parameter semantics to document. The baseline of 4 applies because nothing is missing; the description need not add 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 the P11D changes checker decision guide, which implies a starting role. However, it lacks an explicit verb or action, and it does not contrast with sibling tools like checker_answer or checker_tree. It is clear but falls short of fully specifying what the tool does.

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 description implies this is the entry point by calling it the 'first question', but it never states when to use this tool versus the alternatives, nor any conditions or exclusions. There is no routing guidance relative to the listed sibling tools.

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