renew_domain

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

No annotations are provided, so the description must disclose behavioral traits. It only says 'Renew a domain registration' without specifying idempotency, cost implications, or any side effects. The output schema exists but is not referenced, and no additional behavioral context is given.

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 very short (2 sentences plus arg list), which is concise but omits necessary context. It is front-loaded with the action, but the brevity comes at the cost of completeness.

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 renewal tool with an output schema, the description lacks context about return values, error conditions, or prerequisites (e.g., domain ownership). It is minimal and does not fully enable an agent to use the tool correctly.

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%, so the description must compensate. The Args section restates the parameter names and adds the default for years, but doesn't provide constraints (e.g., valid range for years) or clarify the meaning beyond what is obvious from parameter names.

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 explicitly states 'Renew a domain registration', which clearly identifies the action and resource. It distinguishes from sibling tools like get_domain, list_domains, or update_nameservers, as renewal is a distinct operation.

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 provides no guidance on when to use the tool (e.g., domain must be registered, not expired) or when not to use it (e.g., if already renewed for maximum years). No alternatives are suggested, leaving the agent without context for decision-making.

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