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

With no annotations, the description carries the full burden, and it does disclose the shape of the returned data (field key, label, type, required flag, help text, allowed options). It does not state that the call is read-only/has no side effects, but for a no-parameter enumeration tool the disclosure of return content is the meaningful part and is well covered.

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 sentences, front-loaded with what the tool returns and followed by the one integration fact that matters. No filler, no restatement of the title.

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 and no annotations, so the description has to explain the payload, which it does by enumerating the field attributes. Minor gaps remain (no explicit statement of read-only behavior, no note on ordering or pagination), but for a zero-parameter listing tool the agent has what it needs.

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 rubric the baseline is 4. The description adds the only relevant semantics that could exist here, namely that 'field key' is the identifier used to key answers into submit_enquiry.

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 names the resource precisely ('Every field of the PropFirmPicker enquiry') and enumerates the properties returned (key, label, type, required, help text, options), so an agent knows exactly what this tool yields. The verb is only implied ('every field of...') and it does not explicitly contrast itself with the sibling enquiry_describe, which keeps it short of a 5.

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?

It gives one concrete forward reference — 'Pass answers to submit_enquiry keyed by field key' — which tells the agent how the output feeds the next call. However it never states when to call this versus enquiry_describe, nor any precondition, so usage is only implied.

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