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

No annotations are provided, so the description carries the full burden. It does disclose the shape of the returned data (field key, label, type, required flag, help text, allowed options), which substitutes for the missing output schema, but it says nothing about read-only safety, auth needs, or that it takes no input.

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?

Two tight sentences with no filler; the enumeration of returned attributes is front-loaded and the actionable instruction follows. Slightly dense but nothing is wasted.

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, no-output-schema discovery tool, the description essentially specifies the return payload and its purpose in the submit_enquiry workflow, which is what the agent needs. Only the absence of any safety/behavioral note keeps it from being fully complete.

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 per the baseline rule a 4 applies. The description also helpfully notes that field 'key' is the identifier to use when submitting answers, giving the empty schema context it lacks on its own.

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?

States a specific resource (every field of the SIM Only Deals Compare enquiry) and enumerates the attributes returned: key, label, type, required, help text, and allowed options. It is clearly a discovery/schema tool, but it never explicitly contrasts itself with the similarly-named sibling enquiry_describe.

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 second sentence gives concrete downstream usage: 'Pass answers to submit_enquiry keyed by field key,' which tells the agent this is the step to call before submitting. There is no explicit when-not condition or statement of why one would prefer this over enquiry_describe.

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