getPrices

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

With no annotations provided, the description carries the full burden of explaining behavior. It clearly indicates a read-only price retrieval action and lists the price categories, but it does not disclose response format, authentication needs, rate limits, or how the TLD input maps to output. The linked API reference partially compensates, but the description itself is minimal.

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 states the action, scope, and resource without wasted words. The API reference link is a useful addition and does not bloat the description.

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 simple two-parameter price lookup with no output schema, the description conveys the core purpose, but it omits practical invocation details such as expected return shape and direct usage criteria. The external API reference helps, but the description alone is only minimally complete.

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?

Schema description coverage is 100%, so the parameters are already documented in the schema. The description adds the concept of transfer and renew pricing, but it does not clarify how the two parameters relate to those categories. Baseline 3 is appropriate because the schema does the heavy lifting.

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 specific verb ('Return') with a clear resource ('NameSilo registration / transfer / renew prices') and a clear scope ('by TLD'). It is easily distinguished from all sibling tools, which are registration, renewal, transfer, DNS, and account operations rather than price lookups.

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 description implies usage as a price lookup before registration/transfer/renewal decisions, but it does not explicitly state when to use this tool instead of related tools or provide any exclusions. The purpose is inferable from sibling context, but no direct guidance is given.

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