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

Annotations already declare readOnlyHint=true, so the main safety-relevant behavior is covered. The description adds useful context such as 'Current', the launch-discount condition, and the list of included data, but it does not disclose potential caching, staleness, or authentication requirements. With annotations in place, this is adequate but not rich.

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?

The description is a single front-loaded sentence that begins with the core purpose and then lists all relevant data categories without any filler. Every clause carries meaning, so it is concise and well-structured.

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-only pricing tool with no output schema, the description covers all major content areas an agent would expect: plans, prices, discount status, credits, feature costs, top-up packs, free-tier limits, and payment methods. This is complete enough for correct invocation and interpretation.

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 has zero parameters and the input schema is an empty object with 100% coverage, so there is no param ambiguity. The description adds no parameter-specific meaning because none is needed; baseline 4 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 clearly identifies the tool as a pricing lookup by opening with 'Current plans and prices in USD' and then enumerating exactly what is covered: credits, feature costs, top-up packs, free-tier limits, and payment methods. This distinguishes it from siblings like get_content_rules, list_companions, and search_docs, which are unrelated to pricing.

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?

The intended use is clear from the description: an agent should call this tool when it needs current Lovora plan and pricing information. It does not explicitly mention when not to use it or name alternatives, but the sibling tools are clearly unrelated, so there is little ambiguity.

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