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

With no annotations supplied, the description carries the full burden and does useful work: it discloses that nothing is bought, ordered, or paid, that no quote is guaranteed, and that the tool is free. It also names what the response contains (recipient, consent wording, confirmation method). It does not address caching, freshness, or whether these terms are static, 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?

The ordering cue is front-loaded and the sentences each add a fact (purpose, exclusions, returned content). There is mild redundancy between the title's 'not a purchase, not a guaranteed quote' and the body restating the same exclusions, but the body remains compact.

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 convey what comes back, and it does list the three returned elements. Combined with the explicit no-cost/no-guarantee framing, an agent has enough to call it correctly; only minor detail on response shape is absent.

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 and there is nothing for the description to compensate for. No parameter information is needed or missing.

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 the tool's function concretely: it explains what submit_enquiry does before the user commits, and also returns recipient information, consent wording, and confirmation mechanics. It is clearly a read/inform tool, not a purchase flow, and the opening 'Read first' plus explicit exclusions separate it from submit_enquiry. It could be slightly sharper about being a documentation/metadata endpoint rather than an action.

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 cue with respect to submit_enquiry, implying the agent should call this before initiating an enquiry. It does not explicitly say when *not* to call it or mention enquiry_fields as an alternative, so it stops short of full when/when-not guidance.

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