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

The description adds two traits beyond the annotations: it is a dry-run that does not return the substantive result, and it costs nothing ('Free') - neither is derivable from the structured fields. It does not, however, explain the surprising readOnlyHint=false, i.e. what side effect a 'check' has, nor what 'readiness' means operationally.

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?

It is short and front-loads the purpose, with no filler. But it is two terse fragments, the trailing 'Free.' lacks structural context, and the brevity is closer to under-specification than to disciplined conciseness.

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 values need not be described. Still, for a tool whose readOnlyHint is false and whose only parameter is undocumented, the description omits the side-effect profile and the meaning/source of capability_id - both needed for correct invocation, especially with a sibling list that already offers get_capability and list_capabilities.

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 description coverage is 0% and the single required capability_id is never mentioned in the description, so the agent gets no guidance on what identifier form is expected or that list_capabilities/get_capability supply it. One well-named parameter keeps this above the floor, but the description does not compensate for the coverage gap.

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 verb 'Check' and resource 'capability readiness' are identifiable, and 'preflight_request' does read as a distinct tool from siblings like get_capability and list_capabilities. However, 'bounded capability readiness' is undefined jargon that leaves the actual resource ambiguous, and there is no explicit differentiation from the sibling set.

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?

There is no when-to-use guidance, no stated alternatives, and no prerequisites. 'Free' implies a preflight-before-the-real-request pattern, which is weak implied usage context, but the description never says when to reach for this versus get_capability or aios_status.

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