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

Annotations already declare readOnly, idempotent, and non-destructive behavior, so the safety profile is covered. The description adds some value by clarifying that reading has no enabling effect ('no service is enabled by reading prices') and that some terms remain 'for full review,' which is genuine side-effect context. It does not, however, describe the response shape or any access requirements.

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 with no filler, but the content is cryptic rather than economical — terms like 'Rev1.3' and 'service-credit choices' are unexplained, and the most decision-relevant fact ('no service is enabled by reading prices') is buried at the end rather than front-loaded.

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?

With no parameters and no output schema, the description is the sole source of information about what is returned. It gestures at the policy's subject matter but never clarifies the return format or structure, leaving an agent only partially equipped to interpret results.

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 per the baseline there is nothing for the description to disambiguate. No parameter semantics are needed or expected.

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 title and verb+resource pairing ('Get Service Policy' / 'Read ... policy') make the general action clear, but the body is written in opaque domain jargon ('Rev1.3 free discovery', 'external monitoring quota', 'explicit paid telephone/service-credit choices') that leaves the actual content of the policy ambiguous to an outside agent. It distinguishes a read-only policy lookup but does not clearly differentiate it from siblings like evuun_get_service_entitlements or evuun_get_commerce_capsule.

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 explicit statement of when to call this versus alternatives such as evuun_get_service_entitlements, evuun_discover_services, or evuun_get_commerce_capsule. The clause 'no service is enabled by reading prices' implies the call is a safe, non-committal lookup, but that is inference rather than guidance, and no prerequisites or triggering conditions are given.

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