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

With no annotations, the description carries the full burden, and it does disclose meaningful behavioral facts: nothing is bought, ordered or paid, no quote is guaranteed, and the interaction is free. It also previews what is returned (recipients, consent wording, confirmation method). It stops short of stating anything about the describe call's own side effects or access requirements, which keeps it from a 5.

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?

Three short sentences, front-loaded with the imperative 'Read first', then the substance, then the return contents. No sentence is filler and the most decision-relevant fact (it is not a purchase) appears early.

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 documentation tool with no output schema, the description covers what the tool yields and the key non-financial guarantees, which is most of what an agent needs. It could be slightly more complete by naming the exact fields/consent text returned or clarifying that the call itself has no side effects, but nothing critical is missing.

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 takes zero parameters, so there is nothing for the description to disambiguate; the baseline of 4 applies. The description correctly implies the tool is invoked without arguments and just returns explanatory content.

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 makes it clear this is a read-only informational tool ('Read first', 'States plainly what submit_enquiry does'), and it explicitly contrasts the enquiry with a purchase or guaranteed quote. However, it frames itself largely around submit_enquiry's behavior, so the tool's own identity as the describer of the enquiry flow is inferred rather than stated with a crisp verb+resource for enquiry_describe itself.

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?

'Read first' gives a clear ordering hint that this should be consulted before engaging the enquiry flow. Beyond that, there is no explicit when-not-to-use guidance and no named alternative (e.g., enquiry_fields) to help the agent choose between the two sibling enquiry tools.

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