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

Annotations already declare readOnlyHint, idempotentHint, and closed-world (openWorldHint=false), so the safety profile is covered. The description adds value by previewing the returned content — it names the coverage categories and gives one concrete figure ($5M medical) — which matters because there is no output schema. However, it gives no amounts for the other categories and says nothing about whether figures are per-person, per-trip, or per-policy.

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?

A single sentence that front-loads the resource ('Limits of liability of the base policy') before the parenthetical detail. The parenthetical is dense but every listed item earns its place by naming a coverage category.

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 read tool with no output schema, the description should carry the burden of explaining what comes back. It lists the coverage categories and one figure but omits amounts for the remaining categories, the currency/denomination semantics, and deductible details, leaving the return shape only partially described.

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 takes zero parameters, so the baseline is 4. The description correctly introduces no parameter concepts and has no parameter semantics 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?

States a specific resource — the coverage limits of the base policy — and enumerates the coverage categories (medical, medicines, dental, rescue, third party, continued treatment) plus deductibles. An agent can tell this apart from age_rules and condition_rules, which cover different policy aspects, though the description never explicitly contrasts itself with those siblings.

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 statement of when to call this tool versus age_rules, condition_rules, or destination_info. The enumerated categories weakly imply it is the reference for coverage amounts, but no condition, prerequisite, or alternative is named.

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