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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description adds real behavioral context beyond them: the return is 'current readiness and the single best next action', and that the intent is recorded for setup-action selection. It stops short of describing permissions or any cost/latency traits, so it is not a 5.

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, zero filler. The positive usage conditions are front-loaded, the return value is stated immediately after, and the exclusion clause is last where it belongs.

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?

Output schema exists, so return values need not be enumerated in the description. With annotations covering safety and the description covering both triggers and exclusions, an agent has enough to select and invoke it. Only the effect of the four intent enum values on behavior remains unexplained, which the schema partly covers.

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 is a single optional parameter with 100% schema description coverage and an enum, so the schema already carries the semantics. The description adds nothing about how 'intent' influences the result beyond the schema's own note that it is recorded for setup action selection; baseline 3 applies.

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 a concrete function — returning account readiness plus the single best next action — and the title reinforces it as an onboarding/readiness check. It is a specific verb+resource, though it never names or contrasts a specific sibling tool by name; the not-for clause handles differentiation indirectly.

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 three explicit trigger conditions (starting with aictrl, asking what the account can do, unknown setup prerequisites on a repository action) and two explicit exclusions (general product questions, readiness already known this turn). This is exactly the when/when-not guidance an agent needs, with nothing left to inference.

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