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 reveals that the underlying enquiry process starts an enquiry with human providers, involves no purchase/payment, is free, and offers no guaranteed quote. It also describes what the tool returns: recipient details, consent wording, and confirmation behavior. Slight ambiguity remains because most of the description describes submit_enquiry rather than the describe tool itself.

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 compact and front-loaded with 'Read first' and a plain statement of purpose. Every sentence earns its place: one states what the tool does, one clarifies exclusions and cost, and one lists the return contents. No filler or redundant schema repetition exists.

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 tool with no output schema, the description is nearly complete: it explains purpose, usage timing, non-financial nature, and returned information. It could be slightly clearer about whether the return is plain text, a structured object, or a summary, but this is a minor gap.

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 input schema has zero parameters, so there is nothing for the description to explain about arguments. The schema coverage is 100% because the schema is empty and fully described. The description appropriately focuses on the tool's return value instead.

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 clearly states the tool's function: it explains what submit_enquiry does on Private Health Costs. It uses a specific verb ('States plainly') and resource ('submit_enquiry'), and distinguishes itself by clarifying that this is informational, not a purchase or guaranteed quote. The title reinforces the purpose and differentiates it from actually submitting an enquiry.

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 opening imperative 'Read first' explicitly signals when to use this tool: before proceeding with submit_enquiry. It also names the relevant sibling tool and frames this as the explanatory counterpart to it. However, it does not explicitly mention when not to use it or compare itself to enquiry_fields.

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