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

No annotations are provided, so the description carries the full burden for behavioral context. It communicates that this is a metadata/introspection operation with no parameters and lists the information it exposes. It does not explicitly state that the tool is read-only, describe the output container (object vs array), or mention any authentication or access considerations, leaving some ambiguity.

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 a single dense sentence that front-loads the resource, enumerates the returned field attributes, and immediately connects the output to the submission step. Every part earns its place, with no redundant phrasing or filler.

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 metadata lookup with no output schema, the description covers the key content an agent needs and tells it how to use the results with submit_enquiry. It does not specify whether the result is a list or map, but the enumeration of per-field attributes and the key-based submission hint make the intended usage reasonably 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 has zero parameters and the schema confirms this with no properties. Since there are no parameters to document, the description does not need to compensate for schema gaps. The baseline of 4 applies because the parameter surface is entirely empty.

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 identifies the resource ('Every field of the Prescription Price Checker enquiry') and enumerates the exact metadata returned: key, label, type, required, help text, and allowed options. It lacks an explicit verb like 'lists' or 'returns', which keeps it from a 5, but it is specific enough to distinguish this from an actual submission tool like submit_enquiry.

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 description gives one useful cross-reference: 'Pass answers to submit_enquiry keyed by field key', which tells the agent how to apply the output. However, it does not state when to prefer this tool over similar siblings such as enquiry_describe or checker_start, and offers no exclusion criteria.

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