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

Annotations already declare this a read-only, idempotent, non-destructive, closed-world call, so the safety profile is covered. The description adds genuinely useful behavioral context beyond that: the response is a fixed set of six domains returned in a deterministic order. It says nothing about caching, size, or formatting, but for a static reference tool that is a minor gap.

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 short sentences: the trigger condition first, then the concrete content contract. Every clause earns its place and nothing is repeated from the name or annotations.

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?

There is no output schema, so the description carries the burden of describing the return value, and it does so at the right level (count and ordering of the domains). It deliberately does not enumerate all six, which is acceptable brevity, but leaves the agent slightly less certain about exact payload contents.

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 there is no parameter semantics to explain and no schema gap to compensate for. Baseline for a no-param tool is 4; the description correctly spends no words on nonexistent inputs.

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 names a specific resource (privacy layers) and even summarizes the payload — six privacy domains in order, from retention/deletion to deployment. That is far more than a restatement of the name. It does not explicitly contrast itself with siblings like get_service_overview or get_benchmarks, so it stops 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?

It gives an explicit invocation trigger: 'Use when someone asks how Private SuperIntelligence protects data.' That is a clear when-to-use condition. It offers no when-not-to-use or named alternative, so it does not reach 5.

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