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

With no annotations, the description carries the full behavioral burden and does so well: it states that the underlying action starts an enquiry, is free, creates no purchase/order/payment, guarantees no quote, and returns the recipients, consent wording, and confirmation method. This gives an agent a precise side-effect and safety profile.

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, front-loaded with the main message, and contains no filler sentences. The opening 'Read first' and the verbose title are somewhat redundant, but the body is efficient and scannable.

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 informational tool with no output schema, the description is complete: it explains what action it describes, the non-financial implications, and the return content. An agent has enough context to know when and why to call this 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?

The input schema is empty and there are no required or optional parameters, so the baseline is 4. The description adds no parameter-level detail, but none is needed because the tool takes no 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 clearly states the tool's purpose: it explains what submit_enquiry does on CIW Registration, including side effects and return content. It does not, however, distinguish itself from the sibling enquiry_fields, and the title is more user-facing messaging than a tool-purpose statement.

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 an explicit signal to consult this tool before acting, and 'States plainly what submit_enquiry does' provides clear context for when to use it. It does not explicitly name alternatives like enquiry_fields or explain when to avoid this tool, so exclusion guidance is missing.

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