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

With no annotations, the description carries the full behavioral burden, and it does well: it states that nothing is bought, ordered, or paid, that no quote is guaranteed, that it is free, and that the output includes recipient details, consent wording, and confirmation method. The only minor gap is that it is not fully explicit whether 'returns' refers to this tool's output or to submit_enquiry's behavior, but the meaning is recoverable.

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 compact, front-loads the most important instruction, and covers the essential behavioral caveats. 'Read first' and the no-purchase/no-guarantee statements earn their place; only the slight overlap between title and description keeps it from being a 5.

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 description tool with no output schema, the description adequately explains what the user will learn, including the key disclaimers and what is returned. It is complete enough to call confidently, though an explicit statement of the returned structure/content format would make it fully self-contained.

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 has full coverage, so the baseline of 4 applies. The description adds useful context about the nature of the output without needing to document parameters.

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 establishes that the tool provides a plain-language explanation of what submit_enquiry does, and the title reinforces the expected outcome. However, it does not directly state the tool's own action in first-person terms; instead it describes another tool's behavior, so sibling differentiation is implicit rather than explicit.

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 opening 'Read first' gives an explicit context cue that this tool should be consumed before submit_enquiry, which is a clear usage signal. It does not name alternatives or exclusions, but for a no-parameter informational tool this is sufficiently clear.

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