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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only identifies the tool as the first question of a decision guide, but does not explain what happens when it is called, what output or response to expect, whether it starts a stateful session, or any side effects. This is severely insufficient.

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 short, but its single sentence is largely redundant with the title and does not earn its place by adding meaningful information. It is under-specified rather than efficiently concise.

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?

There is no output schema and no annotations, so the description must compensate by explaining what the agent receives after invocation and how this step fits into the overall decision guide flow. It only identifies the tool as the 'first question', leaving the agent without enough context to use the result or proceed correctly.

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 input schema, so no parameter documentation is needed. The schema fully communicates that no arguments are required, and the description adds nothing about parameters, which is acceptable in this case.

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 'The first question of the Which mail merge to PDF route? decision guide' essentially restates the title 'Start: Which mail merge to PDF route?' with only the minor additions of 'first question' and 'decision guide'. There is no concrete verb describing what the tool does when invoked, so it borders on tautology.

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 gives no guidance on when to call this tool versus its sibling tools such as checker_answer, checker_tree, or submit_enquiry. There is no mention of alternatives, conditions, or sequencing, leaving the agent to infer that it should be used to start the guide.

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