renew

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

Annotations already declare readOnlyHint=false, destructiveHint=true, and openWorldHint=true, so the safety profile is covered. The description adds useful non-annotated behavior: the renewal term is one year, payment is handled separately, and automatic registrar renewal is disabled. It does not cover failure modes or permission requirements, but it meaningfully extends the annotation-based profile.

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, front-loaded with the core action and zero boilerplate. Every clause carries information, though the second sentence is slightly terse and could integrate parameter flow more usefully.

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 destructive, open-world mutation with four required parameters all lacking schema descriptions and no output schema, the description is too thin. It omits what accept_terms/terms_version mean, whether client_order_id provides idempotency, and what happens on failure or partial payment, leaving important agent-relevant details unaddressed.

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 0% and all four parameters are required, so the description must compensate. It only hints at 'quote_id' via 'using a renewal quote' and says nothing about accept_terms, terms_version, or client_order_id. This leaves most parameter meaning undocumented.

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 verb and resource: 'Renew an owned domain for one year using a renewal quote.' This clearly separates it from the sibling 'register' (new domain) and implies dependence on 'quote'. However, it does not explicitly name an alternative tool or clarify scope against all siblings, so it falls just 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?

The phrase 'using a renewal quote' implies the prerequisite flow of obtaining a quote first, and 'Separate payment; automatic registrar renewal is disabled' adds operational context. There are no explicit when-to-use vs when-not-to-use statements or named alternatives, so usage guidance is implied rather than stated.

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