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

With no annotations, the description carries the full burden and does well: it discloses that nothing is bought, ordered or paid, that no quote is guaranteed, that it is free, and that it returns recipient, consent wording, and confirmation details. It does not state whether this tool itself has side effects, but the substance is strong.

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?

'Read first' front-loads correctly, but the middle sentence stacks redundant reassurances — 'Nothing is bought, ordered or paid' overlaps heavily with 'no quote is guaranteed; it is free.' The description also spends most of its words explaining the sibling's behavior rather than this tool's.

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, annotation-free descriptive tool with no output schema, the description covers what content is returned (recipients, consent wording, confirmation method) and the ordering relative to submit_enquiry. Only the missing link to enquiry_fields 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?

There are zero parameters, so the baseline is 4; the schema is empty and there is nothing for the description to clarify.

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 this is a read-first explanatory tool that documents the enquiry flow behind submit_enquiry on SEO content marketing, and it names the sibling it relates to. An agent can tell it apart from submit_enquiry (which actually submits) though it never mentions 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' explicitly instructs that this tool is consulted before the submit_enquiry action, giving clear ordering context. It does not state any when-not condition or address enquiry_fields, so it stops short of a full routing guide.

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