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

With no annotations provided, the description carries the full burden and does disclose key behavioral traits: nothing is bought, ordered, or paid; no quote is guaranteed; it is free; and it returns recipients, consent wording, and confirmation details. It lacks operational specifics like auth or rate limits, but for a read-only descriptive tool the disclosure is substantial.

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 and front-loads the 'Read first' directive. It is slightly awkwardly phrased ('States plainly what submit_enquiry does...') but contains no filler and every sentence contributes relevant context.

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, so the description must explain what is returned; it does so by naming the recipients, consent wording, and confirmation process. Combined with the constraints (no purchase, no guaranteed quote, free), this is nearly complete for a simple zero-parameter describe tool.

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 and schema description coverage is 100%, so parameter semantics are not a meaningful gap. Baseline 4 applies because the schema is empty and the description need not document any inputs.

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 resource (an enquiry with human providers who quote directly) and distinguishes it from the action tool submit_enquiry by framing this as a descriptive, read-first tool. However, it describes what submit_enquiry does rather than stating its own purpose as directly as it could, so an agent must infer that enquiry_describe returns explanatory content.

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 'Read first' gives an explicit ordering cue relative to submit_enquiry, which is useful usage context. But it does not name alternatives such as enquiry_fields or specify when not to use this tool, leaving broader routing to inference.

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