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

Annotations already declare readOnly, idempotent, non-destructive, closed-world, so safety is covered. The description adds genuine context beyond them: the result ordering ('newest first') and that unanswered inquiries appear with the answer absent ('when there is one'). It says nothing about pagination, result caps, or volume, which matters for a list tool.

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 the scope and ordering front-loaded and no filler. Every phrase carries information.

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?

An output schema exists, so return shape needn't be described, and annotations cover the safety profile. The remaining gaps — valid values for 'status' and any limit on how many inquiries are returned — leave the tool callable but not reliably callable.

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?

Schema coverage is 0% — the single 'status' parameter is an undescribed free-form string with no enum. The description calls it an optional status filter but never enumerates valid status values, so an agent cannot construct a valid filter without guessing.

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 ('the inquiries you sent') plus its ordering ('newest first') and content ('with the host's answer'), which is enough to separate it from get_inquiry (single item) and cancel_inquiry/create_inquiry. It never names a sibling explicitly, so it falls 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?

'Optional status filter' implies the tool can be narrowed, and 'you sent' implies a personal scope, so usage is inferable. But there is no statement of when to prefer this over get_inquiry for a single item, nor any prerequisite or exclusion.

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