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

With no annotations, the description carries the full burden and does disclose meaningful traits: nothing is bought/ordered/paid, no quote is guaranteed, it is free, and it returns who receives the details plus the consent wording. That is solid behavioral context, though it never explicitly labels the operation read-only or describes output format.

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?

It is front-loaded with 'Read first' and reasonably sized, but the middle clauses are redundant — 'Nothing is bought, ordered or paid' overlaps with 'it is free', and the title's 'not a purchase, not a guaranteed quote' is restated in the body.

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 covers what the caller gets back (recipients, consent wording, confirmation flow) and the non-binding nature of the enquiry. Little an agent needs is missing, though it could be clearer that this is purely a read/describe operation.

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 the baseline is 4; there is nothing for the description to disambiguate, and it introduces no confusing parameter references.

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 states a specific verb and subject — it 'states plainly what submit_enquiry does' and returns the recipients, consent wording, and confirmation method. It references the sibling submit_enquiry, so an agent can distinguish this read-only explainer from the actual submission tool, though it does not differentiate from enquiry_fields.

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 usage directive (consult this before submitting), and the content implicitly contrasts a free, non-binding enquiry against a purchase or guaranteed quote. It stops short of naming the alternatives (enquiry_fields, submit_enquiry) or stating when not to use it.

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